2023-12-08 06:42:25
Strange but true, the world is not round and the world is flat! But due to “certain forces in physics” the world has a strange shape than expected. When various space organizations release images of Earth taken from space It gives us an arc that appears to be perfectly rounded and beautiful. Not only that, the pictures of the planets in the solar system make us feel that everything is perfectly round. But actually Those planets include Earth. Not exactly like that. Aristotle and other ancient Greek scholars were the first to suggest that the world is round by observing things around us such as Ships sailing out into the ocean don’t just look smaller. But it also seemed to sink into the horizon. If the world were truly flat, ships should all travel in the same plane. This created intense debate from all sides. But humanity finally realized that the earth is really round, but it was believed that it was a perfect sphere. Why is the earth round? In summary The gravity of matter pulls everything as close to the center as possible. Points that are further from the center are pulled down as far as gravity allows. Because of this, any object that is large enough becomes spherical. This is because a sphere is a shape in which gravity is evenly distributed throughout the space.” But the point is that gravity is actually surprisingly weak. The object must be very large first. before a strong enough gravitational force can be created to overcome the strength of the material,” said Jonti Horner, professor of astrophysics. from the University of Southern Queensland said. The world is no exception. It is large enough to create gravity pulling matter into spheres. But it is weak enough to be defeated by another force caused by the Earth’s rotation. Jean Richter, an astronomer from France, noticed this anomaly. In 1671, he Travel to Cayenne, French Guiana, in South America, and take along a pendulum clock that keeps the regular time in Paris. But when he arrived in South America The pendulum clock slowed down. It cost him 2 and a half minutes every day. So he shortened it. But when he returned to Paris It was discovered that the same clock was running two and a half minutes too fast each day. This greatly irritated Richter. But it did make mathematician Christian Huygens think of something. That is, this watch is evidence that the world is spinning. And that rotation gave the Earth a strange shape. Isaac Newton later proved it mathematically in a book known as ‘The Principia’, stating that the Earth was not Perfectly round but ‘bloated’ in the equatorial region. “Most planets and moons are not truly spherical,” says NASA planetary scientist James Tuttle Keane. “They are often squeezed in some way.” And What squeezes the Earth and other planets is ‘centrifugal force’, which is a force that everyone has probably experienced. When we sit in a ride that spins around itself We will feel like we are being thrown outside. Arms, legs, or hair will be thrown as if something is pulling them. This centrifugal force is also being exerted on the Earth, which rotates at a speed of approximately 1,675 kilometers per hour. This force causes the material within the planet to swing outward around the equator. where is the length of the diameter at the equator. (from left to right) is equal to 12,756 kilometers, but the diameter from pole to pole The pole-to-pole diameter (top to bottom) is 12,714 kilometers, a difference of about 42 kilometers, and the faster the stars spin, the more ‘bulging’ they become. The most obvious example is Saturn. Its diameter at the equator is 120,500 kilometers, but its diameter from pole to pole is 108,600 kilometers, a difference of nearly 12,000 kilometers. “The rotation of the Earth creates a maximum external force at the equator and (that force) is zero at the poles,” Dr. Alastair Gunn (Dr. Alastair Gunn), radio astronomer from the University of Manchester. Writing on the BBC Science Focus website, “Because the Earth is not perfectly solid across the board, This force causes the Earth to be ‘squeezed’ into a slightly flattened sphere.” Scientists today track the shape of the Earth using a combination of techniques to obtain the most accurate information. For example, there are thousands of Global Positioning System machines around the world that can measure changes in elevation up to a few millimetres. Including a method called ‘Satellite lasers’ use ground stations to beam lasers up to satellites to measure changes. These technologies allow modern humans to have clocks that keep the same clock, no matter where they are on Earth. It also helps to determine the location or navigation more accurately. Searched and compiled by Witit Borompichaichatkul Source
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#world #flat #perfectly