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  2. Gravity - Wikipedia

    en.wikipedia.org/wiki/Gravity

    In physics, gravity (from Latin gravitas 'weight' [1]) 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 38 times weaker than the strong interaction, 10 36 times weaker than the electromagnetic force and 10 29 times weaker than the weak interaction.

  3. History of gravitational theory - Wikipedia

    en.wikipedia.org/wiki/History_of_gravitational...

    In other words, gravitation is exactly equivalent to acceleration. Einstein's two-part publication in 1912 [ 115 ] [ 116 ] (and before in 1908) is really only important for historical reasons. By then he knew of the gravitational redshift and the deflection of light.

  4. Gravitational field - Wikipedia

    en.wikipedia.org/wiki/Gravitational_field

    In classical mechanics, a gravitational field is a physical quantity. [5] A gravitational field can be defined using Newton's law of universal gravitation.Determined in this way, the gravitational field g around a single particle of mass M is a vector field consisting at every point of a vector pointing directly towards the particle.

  5. Newton's law of universal gravitation - Wikipedia

    en.wikipedia.org/wiki/Newton's_law_of_universal...

    It is a generalisation of the vector form, which becomes particularly useful if more than two objects are involved (such as a rocket between the Earth and the Moon). For two objects (e.g. object 2 is a rocket, object 1 the Earth), we simply write r instead of r 12 and m instead of m 2 and define the gravitational field g(r) as:

  6. Israel's Netanyahu condemns settler violence on IDF in West Bank

    www.aol.com/news/israels-netanyahu-condemns...

    Prime Minister Benjamin Netanyahu condemned on Sunday Jewish settlers who attacked senior Israeli military officers including Major General Avi Bluth, the head of the army's Central Command in the ...

  7. 'Rockin' Around the Christmas Tree' Singer Brenda Lee Reveals ...

    www.aol.com/rockin-around-christmas-tree-singer...

    Last Christmas Brenda Lee set several important chart milestones when her 1958 holiday single "Rockin' Around the Christmas Tree" hit No. 1 on the Billboard Hot 100 chart for the first time. Lee ...

  8. Costco boss warns of potential price hikes due to Trump tariffs

    www.aol.com/news/costco-boss-warns-potential...

    (The Center Square) – A Costco executive warned consumers that potential price hikes in stores could be a result of President-elect Donald Trump's proposed tariffs. "When it rains, it rains on ...

  9. Equivalence principle - Wikipedia

    en.wikipedia.org/wiki/Equivalence_principle

    The equivalence principle is the hypothesis that the observed equivalence of gravitational and inertial mass is a consequence of nature. The weak form, known for centuries, relates to masses of any composition in free fall taking the same trajectories and landing at identical times.