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  2. Mass–energy equivalence - Wikipedia

    en.wikipedia.org/wiki/Mass–energy_equivalence

    [70] [71] American physical chemists Gilbert N. Lewis and Richard C. Tolman used two variations of the formula in 1909: m = ⁠ E / c 2 ⁠ and m 0 = ⁠ E 0 / c 2 ⁠, with E being the relativistic energy (the energy of an object when the object is moving), E 0 is the rest energy (the energy when not moving), m is the relativistic mass (the ...

  3. Energy–momentum relation - Wikipedia

    en.wikipedia.org/wiki/Energy–momentum_relation

    Einstein Triangle. The energy–momentum relation is consistent with the familiar mass–energy relation in both its interpretations: E = mc 2 relates total energy E to the (total) relativistic mass m (alternatively denoted m rel or m tot), while E 0 = m 0 c 2 relates rest energy E 0 to (invariant) rest mass m 0.

  4. Einstein field equations - Wikipedia

    en.wikipedia.org/wiki/Einstein_field_equations

    If the energy–momentum tensor T μν is that of an electromagnetic field in free space, i.e. if the electromagnetic stress–energy tensor = (+) is used, then the Einstein field equations are called the Einstein–Maxwell equations (with cosmological constant Λ, taken to be zero in conventional relativity theory): + = (+).

  5. Natural units - Wikipedia

    en.wikipedia.org/wiki/Natural_units

    In physics, natural unit systems are measurement systems for which selected physical constants have been set to 1 through nondimensionalization of physical units.For example, the speed of light c may be set to 1, and it may then be omitted, equating mass and energy directly E = m rather than using c as a conversion factor in the typical mass–energy equivalence equation E = mc 2.

  6. Klein–Gordon equation - Wikipedia

    en.wikipedia.org/wiki/Klein–Gordon_equation

    The Klein–Gordon equation can be written in different ways. The equation itself usually refers to the position space form, where it can be written in terms of separated space and time components ( , ) or by combining them into a four-vector = ( , ) .

  7. Why Does E=mc²? - Wikipedia

    en.wikipedia.org/wiki/Why_Does_E=mc²?

    Why Does E=mc²? (And Why Should We Care?) is a 2009 book by the theoretical physicists Brian Cox and Jeff Forshaw . [ 1 ] This was the first full-scale book from Professors Cox and Forshaw.

  8. David Bodanis - Wikipedia

    en.wikipedia.org/wiki/David_Bodanis

    David Bodanis is an American speaker, business advisor and writer of bestselling nonfiction books, notably E=mc 2: A Biography of the World's Most Famous Equation, which was translated into 26 languages. Originally from Chicago, he received an undergraduate education in mathematics, physics and economics at the University of Chicago (AB 1977).

  9. Help:Displaying a formula - Wikipedia

    en.wikipedia.org/wiki/Help:Displaying_a_formula

    This screenshot shows the formula E = mc 2 being edited using VisualEditor. The window is opened by typing "<math>" in VisualEditor. The window is opened by typing "<math>" in VisualEditor. The visual editor shows a button that allows to choose one of three offered modes to display a formula.