Earth equator. The exact length of the earth's equator

The equator is an imaginary line that divides the Earth into the northern and southern hemispheres and acts as the reference point for geographic latitude. The countries closest to the equator have a hot, equatorial climate, a feature of which is the absence of a pronounced seasonal temperature change; in such countries, the temperature is approximately the same +25 - +30 degrees all year round.

Are there many countries through which the equator line passes? Let's count together.

In our understanding, the equator should pass exactly through the land territory of the country. Territorial waters do not apply to this. That is, we need countries where one foot can stand on the northern hemisphere, and the other on the southern.

1. Sao Tome and Principe.


A small island nation off the coast of Africa in the Gulf of Guinea. One of the tiny islands of this country - Rolash (port. Ilhéu das Rolas) is crossed by the equator. At the intersection there is a stele indicating such an unusual position of the island, as well as a bar and a hotel.



2. Gabon.


Elephants cross the equator line :) Gabon

Despite the fact that the equator divides the country almost in half, Gabon makes little use of this feature to attract tourists. There are no settlements on the equator. On numerous roads crossing the equator, you will not even find any column or sign notifying you that you are already in the other hemisphere.

3. Republic of the Congo.


The equator crosses the country in a sparsely populated area among dense jungles. As in Gabon, on the roads that cross the equator, you will not find any information. Only in the small town of Makua, located clearly on the equator, there is a small globe frame on a dilapidated pedestal, by which one can guess that the equator passes here.

4. Democratic Republic of the Congo.


Not far from the border with the Republic of the Congo, on the outskirts of the city of Mbandaka, there is a commemorative plaque, as well as in a couple of places where large transport arteries (rivers or roads) cross the equator.

5. Uganda.


In the city of Kayabu, not far from Lake Victoria, there is a popular tourist complex in the form of two rings, where the equator line is indicated.



6. Kenya.


In this country, tourism is relatively well developed. That is why in Kenya, unlike other African countries, they are very actively covering the fact of crossing the equator. For example, in the city of Maseno, in the west of the country, there is a stele on the side of the road notifying that you have crossed the equator, and 200 meters to the east, right on the equator, there is a tourist complex with hotels and hostels. Also, the pointer is on the Nakuru - Eldoret highway, and other busy roads.





An interesting fact is that in the village of Nyang’oma-Kogelo, 100 meters from the equator, there is a school named after Senator and former US President Barack Obama. In addition, the house of the second wife of Obama's father is located in the same village.

7. Somalia.


The equator line runs through southern Somalia. But the country is immersed in its own problems: hunger, poverty, civil war and political instability. Therefore, there is no time for tourism in Somalia. There is not a single stele or even a sign in the country that you are crossing the equator.


Indonesia is a state in southeast Asia, located on several hundred islands. The equator crosses the three largest islands: Sumatra, Kalimantan, Sulawesi, as well as about ten smaller ones.



Along the entire line of the equator there are sculptures in the form of a globe and the designation of the direction of the equator.


9. Ecuador.



The very name of the country comes from the word equator. 20 km north of the country's capital Quito, in San Antonio is one of the most famous monuments on the entire line of the equator - the "Middle of the World".


In addition, the highest point of the equator (4690 m) is located in Ecuador, which is located on the southern slope of the Cayambe volcano, and only in this place on the equator can snow cover be observed. Another fact is also interesting, in the Galapagos Islands (belonging to Ecuador), the equator passes directly through the active Wolf volcano, the eruption of which was on May 25, 2015.

10. Colombia.


The equator runs along the south of the country, where the impenetrable jungles of the Amazon are located. Tourists rarely set foot in these places. There is no infrastructure.

11. Brazil.



In Brazil, the equator line runs along the north of the country, in the west it goes through the impenetrable jungle. In the municipality of Rorainopolis, the equator crosses the highway, at this place there is a memorial with an indicator of the direction of the equator in the form of a hockey stick. In addition, the city of Macapa in the Amazon Delta is located simultaneously in the Northern and Southern Hemispheres. The Zeran stadium is located in this city, crossed by the equator line almost along the middle line of the field. Nearby is Marco Zero - a "monument" to the equator. From Marco Zero to the east, almost to the coast of the Amazon along the line of the equator, there is an "Equatorial street" (port. Avenida Equatorial). Also interesting is the fact that the delta of the world's most full-flowing Amazon River is located clearly on the equator.


In total, we counted 11 countries through which the equator line passes. In some countries, they are very proud of this fact and elevate it to the status of a national treasure, while others do not even react to it. In any case, crossing the equator line is a great event for a tourist, and this fact remains for a long time in memory.

    Astronomers from the US and Canada have measured the boundary of the influence of atmospheric winds and the beginning of the impact of cosmic particles. She was at an altitude of 118 kilometers, although NASA themselves consider the boundary of space 122 km. At this altitude, the shuttles switch from conventional maneuvering using only rocket engines to aerodynamic maneuvering with "reliance" on the atmosphere.

    up to weightlessness 80 and until the complete end of the atmosphere somewhere around 50,000. The ISS flies at 340 kilometers

  • soon we will fly with my mother to rest, and so I think that my mother will be in the cockpit .. to educate pilots and teach them to fly the plane correctly. at least when me or dad is driving, she, a person who has never driven a car, always teaches us how to do it right

    7 hectares is a square with a side of 700 m (hecto - a hundred).
    A lot or a little - depends on the purpose of use. Planting potatoes is just that. You won't go hungry. Not enough for an airport.

    For comparison: the football field is not much smaller than a hectare.

  • 10 km by 10 km? God, do you want to open a reserve?

    Question. How
    What does the day and night side of the Earth look like from a height? What does the sky look like, the sun,
    Moon, stars? Answer. From a height, the day side of the Earth is visible very well, well
    coasts of continents, islands, large rivers, large reservoirs are distinguishable,
    terrain folds. When I flew over our land, I clearly saw
    large squares of collective farm fields and one could understand where the arable land and where
    meadow. Previously, I had to climb to a height of no more than 15 thousand meters. FROM
    the satellite ship can be seen, of course, worse than from an airplane, but still very, very
    OK. During the flight, I had the opportunity to see with my own eyes for the first time
    spherical shape of the earth. This is what it looks like when you look at the horizon. Necessary
    to say that the picture of the horizon is very peculiar and extraordinarily beautiful. Can
    to see the unusually colorful transition from the light surface of the Earth to
    a completely black sky with stars visible. This transition is very thin,
    like a film-belt surrounding the globe. She is pale blue. And so
    this whole transition from blue to black is unusually smooth and
    Beautiful. It's even hard to put it into words. And when I came out of the earth's shadow, then
    the horizon looked different. It had a bright orange stripe, which then
    changed back to blue and back to deep black. I didn't see the moon. Sun
    in space it shines several tens of times brighter than we have on Earth. The stars are visible
    very good: they are bright, clear. The whole picture of the sky is much more contrast,
    than we see it from our Earth.

    Will it do? Oo

    Z.Y. did you get banned by google or what??? Oo

    Z.Y.S. and according to the potential field -

Ecuador is located in the very center of the world. Everyone who comes to this country rushes to the city of San Antonio, which is located near Quito, the capital of Ecuador. Here is a monument symbolizing the Middle of the World. Right under the feet of tourists is the red line of the equator. That is, with one foot they are in the southern hemisphere, where it is winter, and the other in the northern hemisphere, where it is summer. Do you feel the difference when you stand like this, spread out over two worlds? Tourists say no! And the locals feel the difference.

Equator- the main attraction of Ecuador, which is named after this imaginary line that divides the surface of the globe into the southern and northern hemispheres. The main landmark segment is located north of the capital Quito in the town of San Antonio de Pichincha. Everything works here so that a person can realize the greatness of the moment - here it is zero latitude, or, as the Incas used to say, Intinyan. This name, according to some sources, is translated as “the road of the sun”, and some translate it as “the parking lot of the sun”. But as it turned out, there is not one or even two parking lots near the sun, and each has its supporters.

Three hundred meters from the first, main place of designation of the equator - the Middle of the World, there is a museum where another line passes. As the owner of the Intignan Museum Fabian Veira says, he has concrete evidence that his line is more precisely defined. He places a portable sink along the equator line No. 2, pours out a bucket of water and, for clarity, throws in a few leaves. Water goes vertically down without forming a funnel. Fabian then moves the shell to the right of his equatorial line, to the southern hemisphere, and repeats the action. Leaves in the southern hemisphere begin to curl clockwise. Independent experiments can be carried out on a stone - an indicator of the equator, where a nail is driven in. Fabian gives a raw egg and offers to set it on a nail head. The egg does not fall. It's so easy to make tourists believe in your theory! Fabian explains this by the fact that on the equator line, the mutual annihilation of the forces of inertia of Cariolis occurs and the terrestrial forces of gravity decrease. This allows the egg to be balanced so that it rests easily on the head of the nail. But Fabian does not let up and invites tourists to walk along the equator line with their eyes closed. The force of gravity will pull you to the southern, then to the northern hemisphere. And yet - on the equator line, you will weigh a kilogram less!

Cristobal Cobo, director of the Kitsato scientific project for the study of the modern, real equator, claims that there is a real, scientifically based equator line that was drawn not so long ago.
Cristobal Cobo:“Experiments with egg, shell and water are all tricks for tourists. There are modern instruments that indicate that the real equatorial line now passes here - where it is drawn according to the latest scientific data.

In the center of the Kitsato project, you can check everything yourself: stand on the freshly painted line and turn on the JPS. The system indicates that the zero parallel passes exactly where you are standing - a few kilometers from the first two lines. Cristobal explains this by saying that over time, the poles shift, and the equator follows them. This is a natural process of change and development of the planet. Everyone has the right to choose their own middle of the world.

The only thing that remains unchanged here is that throughout the whole country the sun rises and sets at the same time all year round. Here day equals night, and at noon objects never cast a shadow. And there are no seasons in Ecuador as such. And this is possible only at the equator. The equator occupies only five percent of the land. But there is a very rich flora and fauna.

Ecuador has 11 National Parks, 9 reserves, 4 biological reserves, 1 geobotanical reserve and 10 protected natural areas.
El Cajas National Park in Asuay Province. It was founded in 1996 in the west of the country and has an area of ​​285.4 square kilometers. Translated from Spanish as "gate to the mountains." Here you can see about 300 fantastic mountain lakes, lagoons and waterfalls. You need to drive carefully - alpacas (llamas) periodically jump out onto the road. Llama wool makes very warm sweaters that protect well from mountain winds. The higher the mountains, the more dizzy from lack of oxygen. It gets cold and very windy. The temperature at an altitude of 4000 meters drops to +4 degrees.

Ecuador's highest point - extinct Chimborazo volcano(Spanish Chimborazo). Its height is 6267 meters, according to some sources - 6310 m. Once, before the beginning of the 19th century, the Chimborazo volcano was considered the highest peak on Earth. Now it cannot be compared with the highest Himalayan peaks, but so far the Chimborazo volcano is the most distant point on the surface from the center of the Earth.

The material is partially taken from the program: “My planet. With Anastasia Chernobrovina"
Photo: Len Langevin, Delphine Ménard and also from the Internet. For questions about authorship, please contact the office of the company

I learned early on what the equator is, even from my first children's atlases, but it did not arouse a keen interest in me then.

A little later, when I became interested in the nature of South America, my interest in this issue increased dramatically. After all, the equator passes through three South American countries: Ecuador, Brazil and Colombia.

General information about the equator

Officially, we can say that: The equator is a section of the earth, passing through the center of the Earth, and perpendicular to the axis of its rotation.

I'll just tell you that if our planet, like a watermelon, is horizontal and even to cut in half, then on the cut there will be an equator that passes through: the Atlantic, Indian and Pacific oceans, as well as a dozen or more states in Africa, Asia and both Americas


It's interesting that:

  • hemisphere separated from each other equator;
  • length of the equator more than forty thousand kilometers;
  • equator it is impossible to touch, in fact, it is only a mark on the maps.

Weather and climate

The climate is humid tropical.

He is characterized by:


If at the poles night and day can last almost half a year, then at the equator they always last exactly twelve o'clock.

Nature and ecology

equatorial belt rich in his tropical forests. It is home to many species of flora and fauna. The variety of life forms is amazing. Remember the African jungle and the Amazon jungle - how many unusual and amazing animals and plants are there!


Unfortunately, it is these forests that have become the main victims of mass deforestation. Violation of this unique ecosystem leads to the death of many species of flora and fauna. It is absolutely impossible to overestimate the importance of these forests for all of us, because they can rightfully be considered "lungs" of our planet.

And even though most of us live far from the equator, any forests are important for all of us! Keep this in mind and do your best to forests have not disappeared from the face of the earth.

Helpful0 0 Not very good

Friends, you often ask, so we remind you! 😉

Flights- you can compare prices from all airlines and agencies!

Hotels- do not forget to check prices from booking sites! Don't overpay. It !

Rent a Car- also aggregation of prices from all distributors, all in one place, let's go!

When I start to remember how I learned about the equator, several associations from quite early childhood come to mind. But the brightest is connected with the cartoon about Captain Vrungel. When his yacht crossed the zero parallel, the captain, according to the old maritime custom, arranged a holiday for Neptune, which caused some confusion for the ignorant crew members (they decided that Vrungel had overheated in the sun). Probably, then it became interesting to me what kind of place this "equator" is.


What is the equator

This is a fictitious line passing exactly between the two poles of the planet and at the same time perpendicular to the axis of rotation. So she divides the Earth into two hemispheres: Northern and Southern.

But, despite its intangibility, the equator can still be seen. This line is obtained the closest part of the planet to the sun, which means the warmest. Therefore, it is enough to look at a map of the Earth to see how juicy green tropical forests (they are also called equatorial) "outline" a kind of vegetative equator.


equatorial forests

Kingdom of evergreen trees with beautiful glossy leaves. By the way, the gloss here is not for beauty. Rainforests are always very humid, so plants have learned to produce a special wax that covers the leaves with a thin film It keeps them from rotting. From such "waxed" beauties, water rolls off like an umbrella.

Nowhere else on the planet you will find trees whose flowers and fruits grow right on the trunk. This phenomenon even received a special name - caulifloria.


But like any forest on Earth, the tropical one also has tiers:


Helpful0 0 Not very good

Comments0

I received the minimum set of knowledge about the equator in my school years in geography lessons. While equator I associated it with the hottest place on the planet, where the sun constantly shines, where exotic fruits grow and amazing animals live. What is the equator?


The equator is the circumference of the earth

It is a circular line passing through the entire globe perpendicular to the axis of its rotation, and located at the same distance from the poles.


What is the equator for?

Once equator is an imaginary line, then I immediately had a question, why then did scientists need to imagine it?

  • Thanks to the equator, as well as other imaginary lines (meridians, parallels), it is possible to very accurately determine the location of all objects, regardless of where they are (at sea, on land or even in the air).
  • The equatorial line divides the planet into two parts: the northern and southern hemispheres.
  • Thanks to the equator, it is easy to navigate in climatic zones. Territories that are located in the immediate vicinity of it receive maximum sun and warmth here is eternal summer! As you move away from here to the poles, you can notice a significant reduction in sunlight reaching the Earth's surface, respectively, with distance from the equator, the climate becomes colder. I live in central Russia, where even in summer it is not always warm and sunny. Therefore, I am very attracted by hot countries located in the equatorial region.

What is the length of the equator

Equator can be called the longest parallel. Its length was first calculated in ancient Greece. It was the scientist Eratosthenes. He watched the rays of the sun penetrate into a deep well. By measuring the time it took the rays to reach the bottom, he was able to determine the size of the radius of our planet, and then equator length. Such an approximate calculation gave a very accurate result - 40075 km. This parameter of the Earth is one of the key metric characteristics, which is actively used in geodesy, astronomy and astrology.

Helpful0 0 Not very good

Comments0

One of my favorite topics at school in geography lessons was the calculation of geographical coordinates. In order to find the exact coordinates of the points, I was looking for the equator and the prime meridian. Around that time, I thought about how people live at the equator, because the Northern and Southern hemispheres are fundamentally different from each other. If it is summer north of the equator, then it is winter in the south at the same time. Of course, this happens only in theory, but in life the climate at the equator does not change at all.


What is the equator

When I hear the word equator, then I immediately present a geographical map with a clear straight line in the middle. In practice, this is not at all the case, because equator- only conditional lineI, which divides the earth into two equal parts. From Latin aequator stands for "to equalize". Scientists call the equator a conditional line, which passes through the center of the earth parallel to its axis of rotation. Thanks to mathematical calculations, it was found that equator lengtha is 40,075.676 km.


Where is the equator

The equator line is start latitude reference. It passes through such large countries:


A bit of history

Even the ancient Egyptians sailed along the coast in the Mediterranean Sea. Phoenicians the first went beyond it through the Pillars of Hercules (as the Strait of Gibraltar was called) into the open waters of the Atlantic Ocean. They are dguessed about the existence of the equator, but also could not calculate its length. Phoenicians crossed the line of the equator and swam almost to the southern part of Africa. A cave drawing has survived to this day in Namibia. "The White Lady of Brandberg» .


Age of Discovery

After the discovery of America by Columbus, large-scale voyages of Europeans across the oceans began. Sea routes to India and Australia were opened. F. Magellan was the first to sail the territory of the globe. During your journey Magellan could not sail strictly on the equatoRU. This was not allowed by the geography of the oceans. During the first round-the-world trip already proved the existence of the equator. Navigators used the data of an ancient Greek mathematician Eratosthenes on the length of the equatorial line.


Thanks to the equator, we can calculate the exact coordinates of any point on the earth's surface. This conditional line helps navigate in climatic zones and natural areas. Exactly equatorial latitudes get most plenty of sunlight and heat.

Helpful0 0 Not very good

Comments0

I remember at the age of 5, my girlfriends and I learned from older comrades that there is a country where it is always warm and always summer. That was the surprise, only knowing the world of kids, and enthusiastic exclamations: “I wish we were like that!”. Much later, at school, we realized that the name of this “super-country” is the equator (our school friends then had it in mind). The task of marking the equator on contour maps still evokes nostalgia when I look at them. And in my student years, the equator, like the passed half of the training, already had a completely different meaning :). But now we are talking about him from the side of geographical representations.


Equator: definition and characteristics

As on a geometric ruler, zero is the reference point, so the equator is the origin of the geographic latitude. Its latitude is zero. It figuratively divides the planet Earth into two hemispheres (Southern, Northern) and perpendicular to the axis of rotation. Interesting features of zero latitude:

  • for there is real terrain in the path of the imaginary line. Zero parallel crosses three continents (Asia, South America, Africa), three oceans (Pacific, Atlantic, Indian), 13 countries;
  • the areas near the equator are called the tropics. It really is always summer there. Warm, humid air. Day is invariably equal to night;
  • this unique part of the Earth, in comparison with others, receives the greatest amount of radiation from the Sun;
  • thanks to constant solar heat and rains, for a tropical climate characterized by very lush vegetation.

The equator was known even before our era

The knowledge of this fact once again makes one admire, truly, the greatest wisdom of the ancient scientists. As one of my teachers said: “It is easy to make discoveries with a number of tools to achieve the goal, but make at least one discovery with only your mind.” And they could.

Even more than 2000 years ago, the ancient Greek philologist, geographer, mathematician, astronomer - Eratosthenes of Cyrene was able to calculate the length of the radius of our planet and its circumference. The data obtained by him differ very slightly from modern ones! Scientists claim the length of the equator is 40,075 km, Eratosthenes "counted" approximately 39,500 km. Press "Enter" to comment

I like to always start with the origin and translation of the word, because usually this is the main meaning. Translated from Latin word"equator" means « equalize, equalize". That is, the very word "equator" is something separating and equalizing.

There are many everyday expressions for the word "equator". For example, the equator of study in a higher educational institution means half of the completed course of study. But I will return to the most commonly used meaning of this term, namely, to the geographical equator!

What is the Earth's equator

If we talk about the equator of the Earth, then this is equidistant from both poles imaginary plane, which divides our earth cuts it like an apple into two equal halves - Southern and Northern Hemispheres!


  1. at the equator the length of the day and night are the same- this surprised me the most!
  2. at the equator items at noon and people cast no shadows on equinoxes- feel like a vampire!
  3. How closer to the equator, the less you will weigh, since gravity decreases!
  4. At the equator our the planet is spinning faster! This rotation speed is almost one and a half times higher than the speed of sound in air!
  5. equator line closest to the sun, so there warmest thing on earth, but nevertheless on the equator line at an altitude of 4690 meters located glacier!

In the world exists several monuments to the equator! The most famous of them - Marco Zero in Brazil and a monument called "Middle of the World" in Ecuador.


Not in vain in Ecuador decided to build equator monument, because it is to him that the country owes its name! In the name of the opportunity to take pictures on the famous yellow line, crowds of tourists flock to it. But, in fact, the real equator line in Ecuador runs a little further - on the territory of the Intiñan Museum, but this usually does not bother tourists!

Why was the equator introduced?

Definition of the Equator helps with mapping, determining the coordinates, orienteering and even satellite launch! As we approach the equator, the climatic and physical conditions change so much that you do not have time to be surprised at the diversity of our planet!

Helpful0 0 Not very good

Equator in Latin means "to equalize". It is generally accepted that the equator is a conditional circle dividing the globe into the northern and southern hemispheres, and the longest circle (or parallel) of the Earth, perpendicular to its axis of rotation.

The equator is the starting point for determining the coordinates of any place on the planet. Without it, it would be impossible to determine the exact position in space of any geographical objects, or it would be extremely difficult.

Everyone has long known that, to be academically accurate, the Earth is actually not a sphere, but a geoid. geoid- a body, in its proportions resembling a sphere, but not being one. Indeed, at the highest point on the planet, the height is 8,848 m (Mount Everest) and at the lowest - 10,994 m (Marian Trench) relative to sea level.

That is, if you take into account all the differences in height, then any calculation will cause a lot of problems. Therefore, in the international community, for ease of calculation, our planet is considered to be a sphere. Including the equator is considered a circle, although in fact it is not.

According to the international standard WGS-84 the radius of the earth is 6,378,137 m. According to another standard, IAU-1976 and IAU-2000, the radius of the Earth is 6,378,140 m. The difference of three meters is due to the difference in approaches and methods of calculation. However, the length of the equator is 40,075 km, whichever of the standards we take, because after calculating the circumference using the formula l=2πR, the difference will be only in the second decimal place.

History of calculations

The first attempts to calculate the length of the equator were made in ancient Greece by Eratosthenes. Although, in fact, if we take the world known at that time, he considered not the equator, but the radius of the Earth in the region of Europe, which is tied to the circumference through 2πR. In those days, there was no scientific concept of the Earth as a planet.

In order not to go into the details of the experiment, we will explain its essence. Eratosthenes determined that at the moment when in the city of Siena (now Aswan) the Sun is at its zenith and illuminates the bottom of the well, at the same time in Alexandria it "lags behind" by about 7 degrees and does not illuminate the bottom of the well. Which, in turn, is approximately 1/50 of the circle. Now, knowing the distance from Syene to Alexandria (it was about 5000 stadia), it was possible to determine the circumference.

The more surprising are the results of the calculations. Eratosthenes considered the length of the equator to be 252,000 stadia. But since during his life he lived both in Alexandria (Egypt) and Athens (Greece), historians and geographers still cannot say with certainty which stages Eratosthenes used in the calculations. If Greek, then according to Eratosthenes, the radius was 7,082 km, if Egyptian - 6,287 km. Whatever result you took for your time, it was an incredibly accurate radius calculation.

Later attempts to calculate the length of the equator were adopted by many European scientists. For the first time, he spoke about the possible averaging of the radius for the convenience of calculations in the calculations Dutchman Snellius. In the 17th century, he proposed to calculate the radius without taking into account natural barriers. In the XVIII century, France (the first of the countries) switched to the metric system of measurement. Moreover, when calculating the length standard, French scientists tied it to the radius of the Earth.

The calculation was tied to the length of a mathematical pendulum, the half-period of which is one second. For its time, the idea was groundbreaking. However, when traveling to the southern latitudes, the French cartographer Jean Richet noticed that the oscillation period increased. The reason was that the Earth is a geoid and the force of gravity drops closer to the equator.

Research in Russia

In the Russian Empire, research was also carried out to determine the shape, length and other parameters of the Earth. Perhaps the largest and most important of these was project "Russian arc" or "Arc Struve" under the leadership of Friedrich Georg Wilhelm Struve (Vasily Yakovlevich Struve). To carry out measurements, 265 triangulation points were built, which were 258 triangles with a common side. The length of the arc was 2820 km, which is 1/14 of the circumference of the globe. The arc at that time passed through the territory of Norway, Sweden and the Russian Empire. The study was financed personally by Emperor Alexander I, and then by Nicholas I.

This project was the first of the measurements of the Earth, which accurately determined its shape and parameters. When measuring the parameters of the Earth by satellite methods in the 20th century, the Struve measurement error was 2 cm.

In the Soviet Union, the geodetic school also made attempts to calculate the parameters of the Earth's ellipsoid. In 1940, thanks to the work of A.N. Izotov and F.N. Krasovsky was calculated and adopted as the standard for geodetic work in the USSR, the Krasovsky ellipsoid, which determines all the main parameters of the Earth's ellipsoid. According to Krasovsky, the following parameters are accepted:

  1. The small radius of the Earth (polar radius) is 6,356.863 km.
  2. Large radius (equatorial) 6,378.245 km.
  3. The length of the equator is 40,075.696 km.
  4. The surface area of ​​the Earth is 510,083,058 km2.

These facts will be interesting to know:

  1. A length of 40,075 km, on average, is covered by a car in Russia in two years.
  2. The earth rotates at the equator at 465 meters per second, which is faster than the speed of sound. Related to this is the preference for launching spacecraft closer to the equator. At launch, the rocket is already moving at supersonic speed relative to the Earth. This saves a lot of fuel.
  3. The only glacier on the equator is the Cayamba volcano cap in Ecuador.
  4. When moving from the pole to the equator, objects and bodies lose 0.53% of their mass. This is due to the distance from the center of mass of the Earth.
  5. Not a single traveler has yet managed to pass along the earth's part of the equator.
  6. In Brazil, in the city of Macapa, there is a football stadium, in the middle of which the equator line runs.

Video

You will learn a lot of useful information about the Earth from this video.