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In physics, gravity (from Latin gravitas 'weight' ) is a fundamental interaction primarily observed as mutual attraction between all things that have mass. Gravity is, by far, the weakest of the four fundamental interactions, approximately 10 times weaker than the strong interaction, 10 times weaker than the electromagnetic force … 展开
Gravitation, also known as gravitational attraction, is the mutual attraction between all masses in the universe. Gravity is the gravitational attraction at the surface of a planet or other celestial body; gravity may also include, in addition … 展开
In modern physics, general relativity remains the framework for the understanding of gravity. Physicists continue to work to find 展开
Earth's gravity
Every planetary body (including the Earth) is surrounded by its own gravitational field, which can be … 展开Historical alternative theories
• Aristotelian theory of gravity
• Le Sage's theory of gravitation (1784) also called LeSage gravity but originally proposed by Fatio and further elaborated by Georges-Louis Le Sage, based on a fluid-based explanation … 展开There are some observations that are not adequately accounted for, which may point to the need for better theories of gravity or perhaps be explained in … 展开
• Anti-gravity – Idea of creating a place or object that is free from the force of gravity
• Artificial gravity – Use of circular rotational force to mimic gravity
• Equations for a falling body – Mathematical description of a body in free fall 展开CC-BY-SA 许可证中的维基百科文本 Newton's law of universal gravitation - Wikipedia
Wikipedia · CC-BY-SA 许可下的文字Gravity of Earth - Wikipedia
网页In a spherically symmetric Earth, gravity would point directly towards the sphere's centre. As the Earth's figure is slightly flatter, there are …
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Gravity - Simple English Wikipedia, the free encyclopedia
- Weight vs mass
In everyday talk, we say things fall because the Earth's gravity pulls on them. We talk as if our weight was a "given". Actually, weight changes when the pull of gravity changes. The Moon is much smaller and the pull of gravity on the Moon is about 1/6th that of Earth. So any object on t… - Gravity vs gravitation
These words mean almost the same thing in everyday use. Sometimes scientists use "gravity" for the force that pulls objects towards each other, and "gravitation" for the theory about the attraction.
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- Weight vs mass
Newton's law of universal gravitation - Simple English …
网页Newton's universal law of gravitation is a physical law that describes the attraction between two objects with mass. It is talked about in Isaac Newton 's Philosophiae Naturalis Principia Mathematica. [1][2] The law is part of …
Gravity - Newton's Law, Universal Force, Mass Attraction
网页2024年9月11日 · Gravity - Newton's Law, Universal Force, Mass Attraction: Newton discovered the relationship between the motion of the Moon and the motion of a body falling freely on Earth. By his dynamical and …
Gravity | Definition, Physics, & Facts | Britannica
网页2024年9月11日 · gravity, in mechanics, the universal force of attraction acting between all bodies of matter. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of …
Newton’s law of gravitation | Definition, Formula, & Facts
网页2024年8月1日 · Newton’s law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance …
What Is Gravity? | NASA Space Place – NASA Science …
网页2024年9月13日 · Learn about gravity as the force that pulls objects toward each other and keeps the planets in orbit around the sun. Find out how gravity works on Earth, in space and in the universe, and how NASA …
Gravitational field - Wikipedia
网页In physics, a gravitational field or gravitational acceleration field is a vector field used to explain the influences that a body extends into the space around itself. [1] A gravitational …
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