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0:21 so hello everyone and good morning hope to all I will ensure that my voice is coming out properly will confirm once So today we are going to have a lecture Number Two Lattu Longitude Rotation and Revolution We are going to talk about that today
1:20 And a lot of people were having doubts Regarding the class timing then class ki timing will remain same 10m is ok like that I already told you all this things an announcement that happened video I have already told you all the things about it Those who haven't seen that video You can find the link to the video in the description If you go to this video then you will see it once You can confirm everything once you see it what is the timing going to be like okay so from Monday to Friday our There will be classes and the timing will be as per that B 10 M okay now this week so we If people started from Tuesday then Tuesday to Friday will be fine and 10 Many people will have this doubt about M timing or the query was that when everything is free I have got some doubts about what this means Some people even have this thing here, I have Everything is in detail in the video
2:07 I have already told you everything there But you should look at all the things once It will become clear ok yesterday's video was a like kind of demo video so that The public has been kept the rest as I said I told you everything in the announcement video Things are going to stay the same anyway Let's go to lecture number two I hope everyone will listen to lecture number one you must have come after revising and if after revising If you have come, please answer some questions give which is the windiest planet the most Which is the windiest planet and which is yours There is a dwarf planet whose revolution The period is of 310 years, from 310 to Which particular dwarf is 315 years old Then you have to tell me which planet it is
2:53 Which dwarf planet is nearest to Earth This planet is closest to Earth Three questions for you and one more The question is and that is which planet which has the shortest rotation time so tell me which is the windiest planet This is our Neptune which is our future The planet is 310 to 315 years old, this is what it makes Make's Revolution Period which is a duff the planet is in the cup built that is Beyond Neptune which gives us asteroid build We get to see him in the cup belt we call it normal we use ester edge belt Let's see that between Mars and Jupiter Dwarf Planet between Mars and Jupiter which is nearest to earth it is ceres which Asteroid between Mars and Jupiter It is a belt, it has a touching planet belt, this Ceres is located and has the shortest rotation
3:39 It is Jupiter's 9 hour and 55 minutes start today Lecture In this particular lecture we will What are the things Lattu is going to do Longitude i.e. latitude and longitude Rotation means rotation and revolution means Parikramanan are going to do all these things and Associated with it, such as revolution Associated here we will see the seasons why do seasons exist why do seasons exist So all these things are of today We are going to understand the lecture very well understand this because as I told you last time It was mentioned in the lecture i.e. in the first lecture that if you don't understand these things What kind of problem are you going to face in the future The problem arises when we talk about wind systems When I tell you that what is it called doll drums If there is then I will tell you that Brother this is a top, all these are topics
4:24 then you will have a lot of problem there you will have to face today's lecture if you If you don't understand it properly then with at Most Focus Start Lecture ko yes ji notes are really good thank you You will get good notes, just go ahead Let's start from the edge of the earth what is edge with basic this is our meaning Only you can answer this question because yesterday I told you guys this thing I told you this question What came last time in CGL Mains is the edge of the earth remember nebbler About Laplace Theory Nebler Laplace Who gave the theory Immanuel Kant gave the most Earlier he had given the cloud hypothesis and In 1755 and in 1796 Lap Lessee published it
5:10 When we did revisions, ours came from there Noble Laplace Theorem which tells us that How did our solar system evolve? that there was a nebula that is a It was a rotating cloud of dust and gases when you rotated it why did you rotate that as well Earlier we saw the reasons when it rotated So from here our whole solar system Sun Being at the center and the eight planets darf planet is asteroid belt This phenomenon is everything that is born from here This nebula's rotation had a rough start 4.7 billion years ago and our planet yes they were ready to be rough 4.5 At some places it could be 4.6 or even 4.7 You may even get to see a billion years but We don't care about anywhere This means what the SSC has accepted So the SSC mains was conducted last time.
5:57 When I asked a question in that, he got 4.5 The age of Earth is considered to be billion years ago and We believe that it is 45 billion years old This is our age, which is the edge of the earth, this is for us How do we find out that we know radioactive dating from radioactive Dating is only one kind of dating I know it, right, but this dating thing is We find the edge, not just the meaning rocks different now like any we've seen I told you yesterday that our There are meteorites, they heat the earth Those who come and burn are matters which they heat up when they are meteorites They hit and then they come and test them If this is done then their age etc. can be determined from there. is calculated because it is believed that that they too must have been made at the same time as us the meaning would have been created if they were created together From there we collected all the things on radio active
6:42 And where is dating etc. we are c14 Carbon has one isotope it happens to be used as an edge off I know you can make sense of it If you ask about isotopes then we will know about them in chemistry I will read it, I will not read it now, if I know then it is ok if it is not there then let it go because I am there I will explain it again but for now Be careful about the method Radioactive dating is over now come on What is the shape of Earth on Shape of Earth i.e. what is the shape of our earth what you can see behind your screen you must have seen this shape of earth but Actually this is the shape of our Earth No, this perfect sphere that you are seeing isn't it a perfect sphere it's perfect A sphere doesn't actually have any shape Meaning the very complete hemisphere that you see here if it doesn't have this shape then how would it be
7:28 This is the shape, yes this is the shape don't go for the color, go for the shape because Somewhere there are mountains and somewhere there are plateaus okay there are valleys somewhere there are trenches potholes that's okay potholes are plateaus If there are mountains then it is not a plain smooth surface if it is about meaning then how can we draw it smoothly let's do it like it is shown here then we will draw Let's do it like this, look this is the actual shape Meaning that there are mountains and plots somewhere there are trenches and so on okay but we What we do is we take the average like You must be studying average maths if I ask you If I say take the average of 5, 10, 15, 20 then the average will be Whatever comes will be bigger than five or 20 It will be smaller than the Smollett number, right? and the largest number is It is obviously smaller than that So similarly here we take the average that
8:14 This is the increased part so we will call it as average I'll go down here, this is the fallen part The average will go up and so on like this By doing this we create an average, when we draw the average Neither does any such shape emerge which matches this color This is the shape that I'm drawing right now with red. comes out okay this shape this shape also if we look at it a little If you look at it this way then it is something different from this shape The draw here is absolutely perfect there is a sphere but if you look at it then it is Not a perfect sphere what kind of shape is this There is some shape like this, that means we see this Normally but actually if we average it If we draw this shape also then we can see this shape Here you will notice one thing You will find what is the difference between this and this? So you know what is here, here you
8:59 If you look, there is a little extension in the center It is too much, this is called Baljinder on our earth is blooming and They are called at the polls, the polls call them these are the poles this is called the equator Many of you might know Rekha. I don't know, there is no problem for today We will study this in the lecture, Equator Poles what happens then understand it like this who is in the middle part it is called the equator or if If you don't understand the equator then remember it like this center of the earth okay this is us center we are talking and if we talk about the polls Or if we talk about the poles, then these Dhruv means you can understand it like this that the top They are understanding the polls, not us, please understand top ok if you understand then its ok Understand this top and bottom by doing this, okay s
9:47 The truth is that nothing happens top bottom but then Also understand the top and bottom and understand this center So our meaning in the center is bulge d hey that is it is swollen and if we talk about that If you do poles or top and bottom then there is a flat there what is the reason behind this what is the The reason behind this is we know this reason But before that we will know about the radius of the Earth and Let us understand the circumstance clearly now It is understood from the observation that the Earth Centre But the bulge is puffed up, the flat eyes on the poles If there is any logic in it, then it means there is no such rocket There is no science that can tell you that radius meaning in hindi The radius is called the circumference of the circle They say okay so what is radius It happens somewhere around the center If we draw a point on it, then we call it radius.
10:34 If we say it then this is the radius Now look, let's assume that a Perfect sphere or we can assume a circle Let's assume a circle in 2D then the center No matter where you draw it will be the same It will come, okay, I have said this perfectly You have not drawn a circle but you can see it Perfect circle means perfect sphere If I believe it will come out exactly equal then it is called radius but because Our earth is a perfect sphere then like this from the circle is in the circle of form otherwise Then this means that somewhere the radius It will be more somewhere and less somewhere else The body will be bigger, it is an obvious thing that it will be more at the center and from here when If you move from the center towards the poles, they will decrease There will be distance, that is why we say that Earth's Equatorial The equatorial radius is larger
11:22 This is what we call edge comparison to polar radius This is the equatorial radius, this will be the polar radius The radius would be this, I understand this Let's say what will the polar radius say polar radius and this will be called the equator linear radius is correct because of this circumference which is the equatorial circumference That means if you measure the circumference then it will be It will come out more as compared to this If you measure the circumference then the hair will be same also equatorial which circumference comes out She will come more than anyone else Comparison of Polar Circumference in Comparison In Clearly, I will tell you one more fact I will tell you what is the reason behind this Now we know the reason behind this okay there's one more thing to keep in mind that
12:09 which is the equatorial speed meaning Equatorial The speed of the Earth is different from the polar speed Which speed is too much are you talking about What we mean by rotational speed is is rotating talking about rotational speed I am here and my meaning is rotating It is rotating now think for yourself where is the distance so much Everyone will know the basic formula, everyone has read it hoga speed is equal to distance upon time so right now we understand here that This part here, this one which The length is more in the equator There is more distance to be covered here Speed is an obvious thing in time Equatorial is more prevalent on the equator
12:55 Speed is higher as compared to polar Speed Simple Now Why is it Earth Bulbs Because of which the equatorial radius and If the equatorial circumference is high then its The region behind is the rotation of the Earth rotation of the earth yes the earth rotates if you are thinking of rotation then this is what happens rotation this is what's happening this way which The second thing that you might have noticed is that Our meaning Yesterday we read that all planets all planets around the sun they're spinning around them, circling them They call it evolution and even now You will read further but this is the rotation of the Earth that is, it rotates on its own axis going this is called rotation so now because it is rotating so the rotation
13:40 Because a force is generated here See, there are two forces when someone also one thing is rotating as if whatever feels inside here We call it centripetal force. forces call it sentry petal force and an outward force is applied to it is called centrifugal Centripetal force, this is the centrifugal force is exactly equal to the centripetal Magny's doodle force is not this its fixed force They say Fictitious Force, that is why they say it Because it doesn't seem like it actually But when we describe the motion of any thing explains the thing so that it is outside why is something spreading like it's meaning When it rotates it goes outwards So for that we need an imaginary force
14:27 Consider centrifugal pumps as follows: Just like you rocked that swing in your childhood It must be a swing if one cannot swing like this Going to a fair and taking a swing is like a swing One swing moves like this, like this, like this, big Everyone must have seen the swing in a fair and there is another one that is not like small children chair from it there were chairs like this and it rotates like this, meaning This horizontal one and this vertical rotation one are big it is a bit and it is a small one which is no, in which small kids do that then you If you have ever sat, then you have experienced that You will feel a force coming out you're falling on the outside or when Like we remove cream from milk, we remove whey The thing from which they extract butter is the churner In our place it is called churning, like this If you churn it like this, then the cream will turn like this If it comes outwards, it goes outwards why are we going out, why are we going out
15:13 If you are having some experience then you can use that floor When we say centrifugal force then this because of the centrifugal force because The rotational speed is higher here then here It must seem more expensive than centrifugal force means here bulge is swollen if so then you will ask someone at the Earth Centre why is there a bulge in the equator why is there a bulge in the equator why are the poles on that side flat so that's why There is a flat ad on the poles and a bulge in the center because due to centrifugal force now Because there is blood here so it is obvious There will be no fear if it is spreading from here if it is there then press that thing from here as compensator because there is a flat there that's why this shape We say that you can see the shape here We call this shape a joyid shape We don't say spheroids that way.
16:00 Given a unique name because it has a unique shape These Jioda can speak it, I can also write in Hindi I will give you a call in Hindi oval in hindi by the way proper notes to you You are getting it okay and you will get it completely Proper notes will be available separately in Hindi Those who are in batch then flat oval is called this In Hindi it is called Geoderma So if anyone has any doubts, confirm it once I think it won't happen should okay clear rotation cleared And let me tell you one more thing here. That is because of the rotation of the Earth What are our days like because of rotation
16:46 and nights which are days and nights Days and days are caused by the rotation of the earth night that completes our day rotation when our meaning is a rotation its If she completes it on Axis then we will say that one day is over and how much It takes 23 hours exactly if we press Let's talk about the time, 56 minutes that is 56 minutes And we would have called 4 seconds as 24 hours that a day is completed in 24 hours But the accurate time is 23 hours 56 minutes and 4 seconds so what happens with the rotation It's day and night, we are done right now There is no mention of revolution Revolution, we will discuss it further Correct are we Sir will your book come yes
17:34 all clear ok coming soon One more thing I'll tell you about the inclination of earth I would like to make a request to everybody that xam of you guys okay sometimes some People say that I should repeat it and tell you the reason So I see what maximum people do Are you saying repeat it or it is clear anyway Then I know things will be clear because I am teaching myself so much I have had experience, it's okay but Why do I look mean to most people The reason for this is that if a few If people don't understand then I will tell you this I would request you to please focus See if there is anything specific you need that sir this point is a little If you explain, I will explain what are some people they write straight Repeat now either I can start the lecture again
18:21 okay i can either give you something somewhere you You must be stuck repeating it, it's not fun at all show me again show me your dance again don't do that with focus and intensity see that's why a lot of you People keep on saying that Sir all these people If you are studying from here then it is everyone's Will there be selection because so many people are studying If there are so many vacancies then there is no reason This selection of his will be his own There are factors which should be looked at with class focus who has remained consistent till the end Every class should be watched with consistency Plus he will see with revision, he will also do revision These three-four things will remain important is something that not everyone can do till the end okay so keep this thing in mind that focus If you look with it then if some specific thing comes out I wondered sir why did this happen here If so, please clarify and repeat again
19:07 dance show once more inclination of earth Our axis is Earth, it is titted How do you know who has seen it? It's titted Now we're going to show you a lot of tilt This is a big role, the meaning is tilt He has a very big role on his axis is it true that you are feeling a big minus now okay it is titted so like you read yesterday kiss The planet is called rolling planet Which planet is called rolling planet So this is what we call the same planet which Our Arun Bhaiya says Green Planet to that means Why Uranus because its tilt more than 90 degrees from its axis so I told you yesterday that our economy is also It is titrated to 23 a half degree titrated to such an extent It is not straight, its tilt is so crooked So our Le Verrier ji told me to you that they have given points meaning who
19:54 Neptune was discovered or He told the accurate point of Neptune his position was very accurate to him He had guessed that thing had to explain why Uranus is so titted because his Neptune's influence is coming from there why is our meaning titrated so is the meaning of The region of tilt is specific somewhere you won't get to see that this is the reason It is believed that because of which the meaning is titrated It is believed that there is no true asteroid There might have been an impact or something like that There might have been an impact which caused the Earth to tilt Tax If she goes she won't even ask you any questions Will the person ask here how titted then 23.5 ° 23 1/2 The degree is clear, this is its axis How much is your relationship with your axis? If we look at 23A 1/2 degree titrated
20:42 okay clear and this is its orbital plane how much will the tit tilt due to this will go to 66 1/2 degrees because it's 90° This is exactly 90. Subtract 23.5 from 90 and you get 65. You will get 66 A 1/2 but it doesn't ask that much how much is it inclined from its orbital plane which is 66 A 1/2 degree usually this asks that from his axis to this axis it is rotating around which means If it were straight then it would be like this, then how titted would it be It is 23.5 degrees roughly, actually it is 23.4 It is accurate, exactly but you are 23.5 remember the degree okay and its a huge There is a role, we will see it in the next season We will see further but before that we have to talk about Lattu and Develop some understanding of longitude Only then will we be able to understand seasons etc.
21:29 properly comes the latitude on the top Let's say in Hindi what is this There are imaginary horizontal lines on the The Globe That Runs from East to West The first thing that happens anywhere is imaginary You won't get to see it, imagine you will need a lot of things like Let's imagine a lot of things, right? Let's imagine that brother will get selected So this will happen, that will happen at night you If you imagine a lot of things then this also you will have to imagine seeing you somewhere who will not get it, this is not a draw If it is actually imaginary then why do we draw let's do it then there is an application of this too This is to tell the point of any place I will tell you from basic to basic about its use. okay if I have to tell you that I am standing here so you are a If you give reference then it is like I am 30°
22:15 My city is currently located on North Lattu That's my city so a basic of lattu These are imaginary lines that are used Horizontal means horizontal lines and from East to West East West This is how she is running but actually and this Now let us first look at the second point. Then I will tell you what the actual thing is this is the angular distance of a place from the equator now what is this angular distance If it is then the angular distance is simply like The angle formed between the two lines You can call it angular, i.e. an angle. can you tell me the angular thing here now What does he want from the second point here? Understand why you used this particular device I must have done it, I am sorry, I must have never done it, right? You must have a box, okay keep this in it
23:02 it must have been there, it must have been kept in it There used to be an elder brother like this, isn't it? It is very sharp isn't it? What did you call it? compass in hindi prakal its you wrong You must use it with your friends to give pain So you are not using all these things You might be doing it, but use it a little today If I pick this up and hold it like for For example, I put it here So now we will see what this is 10 degrees is telling that this is 20 degrees Understand the degree in a simple way that this The one in our center is called this The equator is the one you can see right at the right angle to the degree. You are able to find this line exactly in the center draw an imaginary line draw this If we call it equator or Mediterranean then on this we call it chanda in hindi Yes, it is Chanda and anyway, what do we do with it?
23:48 They say the protector is okay so this It is a Chanda or a protector, if you If you keep it here then think for yourself, you would accept it if this is the equator then this one if this one Let's assume that the line is passing from here So this is a 10° top or this is a 20° top So if this becomes 30° tilted then that means if Let us see how far from the equator I was when I said I am at 30° it's a top that means it's 30° The angle it is making with the equator it is tilted 20 degrees that means it is tilted from the center Then you are making an angle of 20° with the equator In this figure we can clearly understand that it is 0° That is the equator, so how far is it from 0 degrees is making an angle of 15 so this one is from here this line is going right this top is going to him 15 degree top is called 30° Why is it hanging because it is 30° from the center now It does not need to go too deep into it
24:33 just fine some more than that Will not ask about 1 degree top in depth What do you know about the price, how much it is The cost is 111 km per 1 degree pole So actually it is 0° 30° here You can see 60° but every There is a top in degrees 1° 2 3 4 5 6 7 If we had gone like this, we would have received 30 rupees as donation 31 32 33 34 If you did it like this, you would have got 60 It would be 61, 62, 63, if you did it like this then it would be 90 You must have got a degree, it should not be more than 90 can be similar as below 1 2 3 4 5 6 7 8 If you would have done this, you would have got 30° donation 31 2 By doing this Ganga will reach 60° now those above to those below given the differentiable that's below it is called s
25:20 Now I will call it northern hemisphere we call the upper part and the lower part Part of the Southern Hemisphere Northern Hemisphere and the southern hemisphere says it's okay So every degree between the tops The distance is the same, that is the first thing It does not decrease or increase, how much it is 111 km ok total number of lattoos how many 181 this is how it is our meaning this is 0 The degree is 1 2 3 4 5 6 like this till here 90 happened like this 1 2 3 4 5 6 like this till here how much is it 90 so from here 90 here 90 and this was the one in the middle so you added that If not, then add one to it as well So what is the total? It will be 181 lattus But if someone ever asks you that what is the use of a Lattu tap How many circles are there i.e. latitudinal
26:06 How many circles are there Lattu Naal Circles How many are there then it will be 179 means Actually this is the line we are telling them which are running from east to west if see these in 3d because our actual The meaning is absolutely round, isn't it? so it is not 3d so if we see it completely If you look at it, it is a circle, say 30 degrees If it is North then it went all the way back like this If it actually happens then these lattu lines These are the lines that appear, 2D figure but actually these are circles Lattu Naal then these two become less 181 to 179 why because when it our top when we were going up So as we were going here, when we were at 90 degrees
26:51 If it comes, it will become just a point The circle will not be like this which will be 90° South will also become a point not a circle If it remains then we will get two that is 90° North and 90° South has to be removed from 181 so 179 That is 179 Lattu Naal circles can be seen I have understood, I surprise you again I do this, this is our meaning here we Do you draw such imaginary lines? When you draw, how many lines appear on top? There will be 90 lines like this. How many lines below 90? 90 will come like this, okay 90 so total How much would it be 90 above 90 below and one in the middle So it's 181 but what did I tell you I told him that he might be running like this behind also If it is going backwards like this then these circles Actually, two have to be removed
27:37 Because what is this 90° North and 90° South? these are our points so how many do we have will go 179 is clear now we will talk about some important topics If we look at it then these are some important things for us It looks like it is at 0 degrees The equator says that what is important is this is 0° 23 1/2 ° North not 23 1/2 ° South 23.5 ° north latitude and 23.5 ° south latitude 6.5 degrees north Latitude 6.56 degrees south latitude north pole that is north pole and south pole that is the south pole now this Now he understands why it is important Because they are important that's why they are named has been kept like a person with a degree in The equator is important because it is clear It is understandable because it gives meaning to dividing into equal parts
28:22 is the dividing meaning into to equal Divide the meaning into two equal parts is dividing the upper part becomes Our Northern Hemisphere Northern Hemisphere and The lower part which becomes the southern part hemisphere that is the southern hemisphere This is why we are in the upper lattu we use the letter s and in the ones below it is s Tropic of Cancer or 25 Why are both these degrees important it is important because what we the sun is the sun its rays are direct Rays, now I will show you the whole figure You will understand everything directly the rage doesn't go beyond this okay some
29:08 Things can happen to you right away I may not understand it intentionally but the lecture You will understand it as you complete it because some things when you revolutionize You will see, I will show you a revolution then you will understand why Direct rays do not go beyond this you will understand all that okay For now, understand that the sun's It is direct rage, it does not go beyond this It is 235 degrees north i.e. above north never goes further than 23 1/2 degrees South never goes below so both of them It is important, let's call it tropic of cancer i.e. it is called in hindi the Tropic of Cancer and this Tropic of Capricorn is 23 1/2 degrees South of this It is said that the Tropic of Capricorn is 66 1/2 de North 66 1/2 degree why is this important This is important because there are 6 Days last for a month and nights last for six months here
29:55 Day lasts for 6 months and night lasts for 6 months again how does this happen when this If you understand revolution and season then there You will easily understand this in the Arctic Circle i.e. Arctic Circle, they call it that and This is called the Antarctic Circle The circles tell where it is directly The race of the sun falls on this zone, we call it torrid zone, well when we are under pressure If you study system etc. then I will be there too I will tell you this thing about ITC roots etc. all this What happens then, the torrid zone means camel The tropics region is sensitive to direct rays because The direct rays of the sun are falling here If it is not available here then read direct rage if it isn't there then what is this little bit here But if it is cool then it is called temperate What are the zones called temperate? area then it will also temper that up temperate i.e. north temperate and this
30:40 The South will become temperate and this is what happens 66 a half degree beyond 66 a half degrees to 90 degrees North and 66 A 1 Half degree south to 90 degree south What are these two called frigid zones? They say refrigerated refrigerated zone then you understand The torrid zone ranges from 23 1/2 degrees up to 23 1/2 degrees and up to 66 A 1/2 degrees Temperate and beyond frigid world where 6 Concept of 6 months day and 6 months night It remains fine, which is the largest top? The largest latitude is the Equator which is exactly is passing through the center of and the smallest Which are our two poles, North and If we talk about the functions of South Wala Lattu Do only what I am going to explain to you right now. There was only reason on earth that could
31:27 Experience 24 hours of light and dark From his birth, 6 months are day and 6 months are night The concept of Arctic works here circle and antarctic is the frigid zone speaking here our torate is born They are temperate people, all of them are fine Things are very useful to us in climatology where we will study this why does the wind blow here Which wind blows more where? all the things there for you to understand The knowledge of lattu becomes essential So that's why I told you that today Class is important for you to take further classes If you want to understand then okay if you understand this now if it is gone then we move towards longitude that is, the longitude on the other side sir this is for mains this is for prelims And I have already told you for both the mains.
32:12 I have done nothing different, now that I am from SSC I just started GK 2.0 mains has come ok so what should I do for mains Am I running a separate batch for this? it's not working because it's enough As much as I will teach here prelims mains is enough for everyone ok What are the countries that come on longitude yes these are also imaginary lines but was it horizontal or vertical The horizontal one was like this, the vertical one is like this How can these people not get confused like this? there are drawn lines, there are lying lines, so that's why this is latitude this is simple latitude and this There are vertical lines, that is, the second one your longitude will become how were you running that east west east West East West how is it running north south this is north this is south North South is running like this like this
32:58 This is how it looks if you look at it from the top So it seems like it all came from one place. It is there and you will see it at one place at the bottom So you can get it at one place, check it from somewhere else. You are getting all these here, right? Look, you can find them all here Latitude, you can find all such sorrys here All the longitudes are found here All such longitudes can be found there If you were at the South Pole, it would feel like this Like coming out from one pole and going to the other pole going on okay these are the longitudes I studied in those who run North-South the angular distance of a place from the equator is the angular distance of a Place from prime meridian now this prime Now we will explain what meridian is no if you understand this point then hold it keep it on and you will understand the distance from Each Longitude Varies from Poles Towards The equator is an important point
33:45 Why is this important because this point This is saying that between every longitude If the distance is not the same then it decreases stays looking good Low is the most it is more it is getting less it is getting less no the distance is decreasing it is becoming zero it has become zero see it is maximum here it is getting less it is getting less it is getting less It's getting less and less and less and less and less And it became less and less and less zero after reaching here So the distance between the longitudes of the poles What will be the minimum distance? It will be zero Where will the maximum be? On the equator How many lines 111.com The distance between the tops is same was only
34:31 Sir the distance between each top was the same The equator is 0 degrees and 1 degree above it will be 2 degrees 3 degrees 4 degrees 5 degrees There is same distance between all of them The distance is the same between all of them How much is 111 km 1 degree between all of them between latitudes such as rho and a 1 degree in the middle, let's assume it is 30 degrees so between 30 and 31 in between In that too, 1 degree means 111 km there is distance here what is there here The distance between the longitudes is not the same yes that is the maximum it is the minimum at the equator There is zero at the poles and at the equator how much is it 11.32 km total how many lattoos were there 181 Longitude 360 How To Prime Now Meridian, please understand a little bit, this red
35:16 the line is drawn here this is prime meridian is the green witch mean time also know by name GMT There is a laboratory named Green Witch in London I pass by there so that's why I say given it as prime meridian and reference I have accepted the longitude, now think of it as a top All of these were tops, all of them were tops, brother we saw this one right near the center If it was happening then there was no problem Reference pole, let's assume it is 0 degrees Now what is considered 0 degree in longitude because each longitude has two meanings dividing into equal parts which It is called great circle, we will understand it further great circle what is a great circle Which longitude should I consider and its basis What are you trying to believe, do you think that I will do this
36:02 I should accept this, I should accept this, you say Okay Sir, please accept this, tell me the reason why you should accept it Why believe this, why not believe this In this we can tell that this This thing is that we divide the meaning into two equal parts not dividing y meaning two equal what is dividing into parts here If you give logic then nobody will understand here Were you unable to understand why you should give logic to one person We have to accept time as a reference I'm going to decide because longitude is played in time Now we will read what is the meaning of longitude This is why we play games to pass time We had the Greenwich Laboratory, the largest laboratory in London at that time. There was dominance, okay, and there were some around countries which are based on what was here the Greenwich Laboratory which is located here who had a very big role in all these In deciding things, it is believed that I thought okay the longitude from here is close
36:47 Whatever is happening, we consider it as a reference And this is called prime meridian Or we call it Greenwich Mean Time He said that from today it is zero degree the longitude is gone what happened degree longitude forget this now what is this It is written International Date Line, this is us right now We'll see later, okay, so this is prime radian did you understand yes then what should we tell you wanted to explain that 360 How to calculate longitude very easily when you go from here then here you will find you will get 180 because each one is exactly If I explain it from the basics, the very basics then Think for yourself, it is completely 360 degrees, right? If you come back after a round, will you turn 360 degrees or not? How much is a full 360 degree circle 360 degrees becomes 360 longitude If you understood it, it is not right, understand it like this so this is 0° okay from 0° like 1 2 3 4
37:35 5 6 7 8 If you do this then you will get 180° Just opposite to this, just like this start from right and go from left like what did you do there did you go above the equator 90 went below the equator, 90 here When we went to its right side, we found 180 If the eye goes to the left side, then how much will you get? Have become 360 360 Sir, people like you don't even add this The equator was not connected there at all But when I went from here I added 180 When this went from here and we added 180, it became 180 if added twice If you understand 360 then it's ok otherwise just memorize it Zindabad 360 longitudes are completed How much does a wheel cost if you take a round How much will it cost if you rotate 360 degrees then 360 There are 360 degrees of longitude, there is no 361 359 nothing 360 accurate ok
38:21 Now let's come to Longitude B Prime Meridian what we were just studying is international date line Now I will teach you what is international The date line is the prime meridian We consider this as the reference and Greenwich Greenwich Laboratory calls it mean time Sometimes I pass through London If I had asked too many questions then I don't know the question, let me tell you, but if If you come then remember this trick, what do you mean The line which passes through the country is BSF game in togo kingdom kar kar trick hai then b What will happen to you from Burkina Faso s from will become Spain F from will become France it will be from G here your Ghana is from A will go from Algeria to Mali and will be from Togo will be from Togo Kingdom The United Kingdom passes through eight countries this is to be taken care of and bsf game in togo Be a little careful if someone ever asks you There are not more questions on this than
39:08 concept of longitude used in time to It might be that some of you have You might have heard that our Indian time standard Greenwich time is 1½ hours ahead of standard time that is indian standard time is 5 and Half hours ahead of GMT that is Green Witch Why do we say mean time? because in our sense when one rotation is completed completes one rotation then we what do you say one day has passed how many hours of 24 hours and when it completes one rotation hey that means it is rotating 360 degrees now It is told that when it rotates completely then it means 360 degree rotation The degree is rotating in 24 hours, its meaning what happened this means if you are basic If you calculate it using maths then it will be done in one hour How many degrees did it rotate 360 b 12 15 degrees a Our earth is rotating 15 degrees in an hour
39:54 That is, it is covering 15 longitudes So should I speak about the rain in the rain? This means that 15 It takes 15 degrees to cover one degree rotation The time taken in 60 minutes is 1 degree Time taken to cover the longitude 4 minutes means 1 degree is equal to 4 minutes Okay with simple simple maths, that means We can also say that 15 the degree is the same, the same thing is written right Now here it is written, two points It is written that the prime meridian which This is the line, if you go east then the time It adds up and when you walk in its waste so time We have accepted subax longitude and we are saying this It seems that if you walk to its right, Prime
40:41 At zero degree longitude of the meridian Time is added and in Western West If we walk then there is less time to decrease has to Is how how how how understand it like zero degree longitude this is okay which is wich We assume it is passing by London What time is it here right now? 10:30 Let's take it, okay, let's say it's 10:30. remained okay it's 1030 here now let's say that this is a longitude is and this longitude is 30 degrees east what is this 0 degrees this is 30 If degree is then difference between 30 and row So the difference is 30 degrees and 15 Degree means one hour is 30 degrees means two hours so this point
41:27 is 30 degrees longitude it is two hours ahead This means it will be 12:30 in the afternoon here. it's ringing It must be 12:30 in the afternoon this question, please attempt this question Attempt if it is 12 noon at 60 Degree East Longitude Than Explained what would be the time at 30 degrees east Longitude then I will make you calculate it I am India, what I just said that what is India or of India Standard time is 55 hours ahead First let us know how is Greenwich Mean Time Please calculate and tell me the answer quickly I am enjoying it a lot sir it seems so Dil Garden is garden ho hai to Dil Garden The garden is happening, is there any answer to the question as well If you do it, my heart too will become a garden
42:13 please use hindi language more please do it completely friend you are using the same If you keep on following me then what will we do So if it is 12 o'clock in the afternoon, 60 degrees east longitude then 30 degrees What time would it be on the Eastern station now? If we find out how to find east and west Understand it like this, when we are reading about Toptu then the upper top was separated from the lower one [music] Differentiable and put W here Eastern Hemisphere and Western hemisphere okay so if it's 12 o'clock 60 degrees longitude at noon Let's assume what a degree means dig is prime meridian fine tooth 4 such
43:00 By the time we do this it will become 60 degrees here it is 60 degrees like this it is 60 degrees where will it be 30 degrees so 30 degrees It's gonna be right here in the middle, okay, this line is something it has become too big, straighten it a bit we make it because our prime Is it meridian or any other our longitude is straight, okay straight so this is 30 degrees now he is asking that if it is 12 noon here If PM is happening then how much is happening here If yes then sir what is the difference between these two In between longitudes we have prime radian it has nothing to do with it, I just made for your reference sot so that To make it easier for you to understand, we just need to consider these two What does longitude mean? He is asking 60 It is 12 o'clock in the afternoon at the degree level and it is 30 degree p tell me what time it must be then the difference First find out how much it is 30 degrees the difference is ok then convert it into hours
43:48 Let's do this: 15 degrees means one hour If it happens then 30 degrees means two hours now Will it be two hours ahead or behind then sir If you are going West, then subtract. Now you will need it sir, you had told me that If you go to the east then you would do plus yes brother if we go to its east then Of course we add plus, when did we minus we do it but where is it being talked about where are we even talking about it now This is being considered as a reference and not its now we have to go left and right If we are going to its left then whenever When going to the left, the speed decreases by two Reduce the hours i.e. it is 10 in the morning there will be 10M here What time would it be here at 0 degrees? and how much more 30 degrees will you have to come back come back it must be 8 in the morning
44:34 30 degrees means two hours, understand now Here, let's assume that we are at 30 degrees Celsius. This is 30 degrees, this is also 30 degrees, this west is this east or not this is east or this is west That means now you are going to the left, Prime. No matter who is to the left of the meridian If we mean reference longitude then 30 Degree West means what will be the time here Everything will happen here again, what time is it here It must have been 6 o'clock in the morning If you go left then time decreases It will happen and the time will increase if you go to the right it will be simple, okay, with the same logic you can calculate yes it is ok ah it would have been added in that only If everything is fine then now follow this logic From this we can conclude that whatever is our primary Green witch means sorry which our Indian Standard time is our Indian time Its standard is 82 A 1/2 degree East.
45:20 When we first read Indian Geography If you are giving a lecture then this will be there Will you see 8.52 degrees east longitude Our India has the same time standard There are many countries which have three or four, i.e. 10 or 10 1212 is the time standard till 13 of France so it is why does it happen why do they have more of it I will read everything there but for now Just understand this much that India which respects its own time, 1 degree east longitude People living in Nagaland and Arunachal Pradesh also They only believe it according to their Let's set the clock and stay in Gujarat People also set their time accordingly First of all we do our own thing, everyone's own thing It used to be running but now this is the reference Longitude is observed all over India 82 a half degree so from 0 degrees this It is easy to calculate how far ahead or behind What is the difference between 82 a half and zero
46:08 82 is just half the difference between 85 and zero If we subtract, we get 85, so now we can find it How much will come out in how many hours sir 15 degrees means one hour for both Multiply the side by five, which is 75 degree means 5 hours 75 degrees Degree means 5 hours are left ° 7.5 ° 82 A 1/2 and 75 to If we remove it, it will turn out to be 7.5, so if we Let's move it to the side, okay, it means 75 5 hours are gone how much is left 7.2 7.5 degrees how much would it mean half an hour why because 15 degrees means 1 hour so Half of 15 is 72 so half of 1 hour is 30 minutes That means we are ahead by 5 hours and 30 minutes Why is it because we're on the Eastern Side
46:53 are located from this reference longitude simple okay now this is international date line what happens is what was written here I told you not to read it now, we will move on we will see this is called idl International Date Line and why this date It is written in it, see this is prime meridian when it rotates completely 180 degrees 15 degrees means 1 If the clock is correct then what does 180 degrees mean will be If we multiply 12 here, how much will we get We will get 180 degrees i.e. 12 I understood after an hour, I would repeat it again yes I said that 15 degrees means one the hour is a 180 degree means how much is 12 hours So from this prime meridian if you turn 180
47:41 You will come to the degree meaning it was kept absolutely flat This is the map that is made but our meaning It is not flat, it is round, so it rotates When you go back it will take 12 hours because East If I am going then these people are 12 hours ahead which will be exactly here at 180 degrees and when you go to the west its like this by doing this you will have to reduce the time and when You will become like this only when you reach 180 degrees You will find that you have to subtract 12 hours you will have to because here you will have to minus there we have to add 12 hours here you have to subtract 12 hours if you Use your mind just a little bit, a little bit If you use your mind then this point and this There is no 24 hour difference between the points went like this is it okay do it like this I went to him here and he spent 12 hours
48:27 I added, I spent 12 hours subscribing here so When I come here to the points of both of these then one day it will change, one day it will change The date will change here say so that people don't get confused So a line was drawn here. which was called the International Date Line international date line which is a strait it's not a line it's a zig zag line why why there is a zig zag line because if If you make it a strait, this would be Alaska Sorry Alaska, this is Russia's work The reason behind the chat is that it is kama chat The Pennines sleep here But think about it, the people who live here it's the same people from the same region, okay So I got to know that the date is changing here immediately
49:13 The date is changing immediately here There are small islands here like Let's take it and get it passed straight away here There are so many small continents So you can find out if you just step here Here the date is something else, here it is next to it There are some more dates in the next house and here There is some other date going on in the house next door this change is going on for a whole day so this To avoid confusion, remove the for the first thing it is the pacific ocean that is pulled into a specific ocean where Where is the least viewed land mass the territory has been taken out from there and yet some or the other terrain that is land mass is here If it was happening, avoid it and skip it immediately. While doing this, do it in a zigzag manner like this It was completely drawn to land from somewhere If you do not pass the mass then the question becomes Sometimes too many questions don't arise from this Very rare you get to see question in ASSC
49:59 but because now it's us you will see things if you assume by chance If the question arises then because we are doing batch I have never seen this in Peeva's series Concepts have not been taught because there are so many questions That's why it didn't come but if it comes then it's ok If we cover everything then this The question asks that if you waste it If you go from East or West to East If the date is lost or the day is gained, then it will be big If there is confusion in this then understand it like this when If you go from West to East then you Keep in mind here that day gain will be day gain what does it mean de gain means like what is the date today it is 2nd October okay These people believe that they will live on 2nd October We are here, will we cross on 1st October I will reach there once you say so sir It became loose one day, it did not become loose Bhaiya this was on 2nd October just now 2nd October
50:45 this is for you i jumped here okay one In October, it's time to live two Octobers again They will get a chance, that is, one day they Extra Gain Tax What will happen in the reverse case? You will loose but call day gain as day loss Let us give you a look here, from 2nd October to 1st It's October, date is lost, that means if you go from here west to east International Date Line Suppose you are a you are crossing like for example you You are on a flight and here from Russia to USA If you are going and you cross this then you You will have to shorten your date to one or not Your date got reduced but you got an extra day If you get debt loss and day gain then both are same If the same thing happens, you remember one West to East or East to West remember one of them the other one is his
51:30 it will turn upside down there will be no problem If you try to remember them both If you forget both then remember it like this that When we cross from West to East If we do it then we will gain day but date There will be loss now we have to give more time to this there is no need for much, just come on now what are great circles The concept is to end it finally then come our finals on seasons You will not be final on the topic, but second last After that if you read eclipse then who will be off Great Circle What is a Great Circle what is a great circle hey lattu i was just telling you that the circle is like a So now you can understand clearly here How is this circle, just look at the line I was understanding it but look at it like this It must have gone back also, this is right, great circle The great circle is that circle, understand it like this which divides the earth into two equal parts
52:16 divides the meaning into two equal parts divides into equal parts Now these three are draws here one this one the circle is a circle this one is this one Who is the one who divides the Earth into two equal parts? This one is dividing so this is great If you are not doing this then the circle will be small the circle is Simple ok this is the meaning ok understand it carefully Meditate mindfully so this is the meaning okay this is the longitude We have longitudes like this No, I don't mean I didn't draw it properly yes but here you see this one which is like this could be observing this is the longitude if it is ours then keep this thing in mind that the they are all our longitudes
53:02 the great circle would have been I don't know what you are able to understand here Otherwise, this isn't a perfect circle in the first place. is becoming one Seconds are fine from North Pole to South Pole They are running from North Pole to South Pole You are running in any longitude take all the longitudes and give them to the earth Divide into equal parts it is kind of like that like maan let's take this is an apple save suppose this is an apple ok you cut the apple in such a way that the apple cut it in such a way use the knife in such a way that it hits the center If he has passed, he should just pass from the centre If he is passing from the center, then he
53:49 It will be necessary to divide it into two equal parts It is not necessary that you have to cut the save just like that. Cut it from any angle but that is a that Your longitude should be passed from the center It is something like this, our angles are different from theirs 0 1 2 3 4 5 but if you imagine all of them If you do that then they will pass from the center only that's why all longitude keep this thing in mind all longitude All longitudes are great circles Circles are great circles But there is only one Lattu which is great there is a circle it is this one it is you You will be able to understand this easily because this Dividing the meaning into two equal parts he is not doing this, he is not doing this if it is happening then these are called small circles but only one lattu
54:35 Only one Lattu is Great Circle and who is he That is the equator, the equator is the longitude did you understand it or not, you closed your eyes Just imagine once that the whole plane like this is ours okay if we look at this So this whole circle is passing through the center This reddish colour that you are seeing is Divide the meaning into two equal parts like this Give Okay, or you can understand this equator like this So you will be able to see it sorry longitude So you will be able to see it like this from here those who are coming out after doing this, now from any angle If you want to use a knife then it will be from the center will pass and divide the meaning into two equal parts if it divides then all the longitudes are great circles so now we can use this Where do you use it? It is also used Always keep in mind that the great circle
55:21 it happens it is the it is the shortest distance between two point it is the Shortest Distance Between Two Points The shortest distance between two points The distance is the great circle like this is the point on the earth okay this is the point Now this is it, this is what was drawn, the great circle is now when you do it like this If you make it completely or not then this will be a complete This entire great circle will become a great circle This will be made completely by dotting it like this If I draw it from the bottom then this is the biggest circle To become a circle, any circle can be formed yes sir i can make one like this also okay and i can mount it on top
56:06 am simple or these are two points of both of them to reach Infinity, this is in 3D, so in between The shortest distance will be a great distance There will always be a circle, you will always know this thing It has to be kept in mind that the distance between two points the shortest distance will always be the one The great circle will be as I tell you I have already shown it here again this thing is like these two points ok i'm going to show you this thing again I'll try and maybe you'll understand this These two points are here to draw I draw with green because it's complete If red is on then I will draw it from green like this is the point and this is the point okay to make a circle so I'm going to do this also
56:53 I can make it, okay, this circle can also be made. Any circle can be made but this one it will form a circle it will do it like this okay Now by doing this a complete circle will be formed By doing this the biggest circle will be completed If it happens then this is what we would call a great circle then you have to keep this thing in mind okay So to summarise we have top and longitude I read in the middle that this is the equator, okay this reference longitude this prime meridian This is the reference longitude of our lungs All lines of longitude are great there are circles and these are all our tops which this is a lying down line this is a top this is longitude okay now can anyone even get this far If you have any doubt, ask quickly
57:39 say yes ultra noob wrote it right 361 great We will have one circle so if we take top and If we add all the longitude then it is 360 Longitude and a top yes it is clear ok a your notes now How to buy it, it will be available in just 4-5 days Don't worry, the announcement will be made ok no need to take notes from anywhere yes you will get it How to go to the great circle to cover the shortest distance Priyanshi that will be the one I am going to tell you I was trying to take two points I'll take it, okay let's finish it let's assume this is the point okay or So understand it like this, this is a point or this is a point
58:26 Now this is the shortfall between them there will be no distance because our Meaning it is not 2D, it is 3D so a little curved Will the line be formed or not? Will a curved line be formed? like this because our earth is curved like this So this is the curve on which you will draw the circle no it's ok by doing this i am proper I am not able to draw but the From here, this complete circle is like this It will turn out that this will be the biggest circle now Now how many people are there to connect them? Why not make a circle, it is the biggest one The circle will come out so we say that The great circle is that between two points The shortest distance in between is fine Now let's come to which hemisphere i.e. what are hemispheres on hemisphere Simple like this is the equator, this is Nadan
59:14 hemisphere southern hemisphere prime This is the meridian, the line that has just been drawn Eastern Hemisphere and the Western If you understand the hemisphere then this is the equator the northern hemisphere above the equator Below Walala Southern Hemisphere Prime Weston on the Western Side of Meridian hemisphere i.e. the western hemisphere and on the eastern side of the prime meridian Eastern Hemisphere That is Eastern Hemisphere okay so what do hemispheres mean divides it into two equal parts Equator Horizontal and Prime Meridian and The International Date Line is vertically Let's divide this North vertically Understand this in the South and in the East-West You must have understood, now let's come to the revolution what is revolution so revolution is this happens where the earth revolves around our sun In an elliptical orbit, that is, in a on an elliptical orbit The revolve is turning around and circling around it
1:00:02 is an elliptical orbit in an elliptical The orbit is elliptical, it is not circular You must have read about ellipses in 11th and 12th class. People must have read the ellipses today Hyperbola This is the essence of Hyperbola, we will read it Average Fixed Revenue in Economics The curve is hyperbolic in nature Well, this is an elliptical orbit every
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