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  2. Relative density - Wikipedia

    en.wikipedia.org/wiki/Relative_density

    Relative density, also called specific gravity, [1] [2] is a dimensionless quantity defined as the ratio of the density ... Mercury: 13.56 Depleted uranium: 19.1 Gold ...

  3. Mercury (planet) - Wikipedia

    en.wikipedia.org/wiki/Mercury_(planet)

    Mercury is one of four terrestrial planets in the Solar System, which means it is a rocky body like Earth. It is the smallest planet in the Solar System, with an equatorial radius of 2,439.7 kilometres (1,516.0 mi). [4] Mercury is also smaller—albeit more massive—than the largest natural satellites in the Solar System, Ganymede and Titan.

  4. Standard gravitational parameter - Wikipedia

    en.wikipedia.org/wiki/Standard_gravitational...

    Mercury: 2.203 20 (9) × 10 13 [2] Venus: ... where the centripetal force provided by gravity is F = mv 2 r ... where a is the semi-major axis and ε is the specific ...

  5. Tests of general relativity - Wikipedia

    en.wikipedia.org/wiki/Tests_of_general_relativity

    The precession of Mercury was already known; experiments showing light bending in accordance with the predictions of general relativity were performed in 1919, with increasingly precise measurements made in subsequent tests; and scientists claimed to have measured the gravitational redshift in 1925, although measurements sensitive enough to ...

  6. Specific weight - Wikipedia

    en.wikipedia.org/wiki/Specific_weight

    The specific weight, also known as the unit weight (symbol γ, the Greek letter gamma), is a volume-specific quantity defined as the weight W divided by the volume V of a material: = / Equivalently, it may also be formulated as the product of density, ρ, and gravity acceleration, g: = Its unit of measurement in the International System of Units (SI) is newton per cubic metre (N/m 3), with ...

  7. History of gravitational theory - Wikipedia

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

    Al-Biruni and Al-Khazini studied the theory of the centre of gravity, and generalized and applied it to three-dimensional bodies. Fine experimental methods were also developed for determining the specific gravity or specific weight of objects, based the theory of balances and weighing. [53]

  8. Elon Musk's X settles Donald Trump's free speech lawsuit ...

    www.aol.com/elon-musks-x-settles-donald...

    Donald Trump sued Twitter after being kicked off the platform following the Jan. 6 riots. Ally Elon Musk bought it, now X is reportedly settling.

  9. Mercury (element) - Wikipedia

    en.wikipedia.org/wiki/Mercury_(element)

    Mercury is a chemical element; it has symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum ... Specific heat (kJ/(kg·K))