Assertion: c | /r/HasProperty | the speed of light
Facets:
value: in a vacuum
type: LOCATION
value: in n
type: LOCATION
value: in free space
type: LOCATION
Source sentences:
text: c is the speed of light in free space.
text: C is light speed, h is Planck's constant, and L is that wavelength the question is about.
text: Many other methods were subsequently employed to further improve the accuracy of the measurement of c, so that it soon became necessary to correct for the refractive index of air since c is light's speed in a vacuum.
text: One of the biggest is represented by Einstein's famous equation, E = mc², where E is energy, m is mass and c is the speed of light.
text: = c / n, where v is the speed that light travels in the medium, c is the speed of light in a vacuum and n is the index of refraction.
text: Is c, the speed of light in a vacuum inertial frame, constant?
text: This apparently anachronistic analysis implies that Rømer was measuring the ratio ​c⁄ v , where c is the speed of light and v is the Earth's orbital velocity (strictly, the component of the Earth's orbital velocity parallel to the Earth–Jupiter vector), and indicates that the major inaccuracy of Rømer's calculations was his poor knowledge of the orbit of Jupiter.[note 7]
text: There have been theories going around in the undergrowth of theoretical physics for some years that propose that c, the speed of light in a vacuum, may have varied over the course of cosmological evolution.
text: and c is the speed of light.
text: Where 'c' is the speed of light and 'v' is the velocity of the light in the medium.
text: Is c, the speed of light in vacuum, constant?
text: where c is the speed of light in vacuum and v is the phase velocity of light in the medium.
text: where E is the energy of the photon, c is the speed of light in vacuum and n is the refractive index of the medium.
text: where u is the velocity of the planet relative to Earth, and c is the speed of light.
text: c is the speed of light.
text: In the special case of electromagnetic waves moving through a vacuum, then v = c, where c is the speed of light in a vacuum, and this expression becomes:
text: where c is the speed of light (c in a vacuum, or less in other media), f is the frequency and λ is the wavelength.
text: the speed of light in a refractive medium is c/n where c is the speed of light in a vacuum, so for this substance
text: The refractive index of a material is the ratio of c (the speed of light in vacuum) to v (the speed of light in the material).
text: where c 0 is the speed of light in a vacuum (3 x 108 m/s) and c 1 is the speed of light in the material.
text: _{r}} is the relative permittivity of the medium, μ r {\displaystyle \mu _{r}} is the relative permeability of the medium, and c {\displaystyle c} is the speed of light in vacuum.
text: where c is the speed of light, f is the emitted frequency of the radio waves and Δf is the difference in frequency between the radio waves that are emitted and those received back by the gun.
text: This relationship between mass and speed is often expressed as a relationship between mass and energy: E=mc^2, where E is energy, m is mass and c is the speed of light.
text: m={\frac {{m}_{0}}{\sqrt {1-v^{2}/c^{2}}}}} where the “rest mass” m 0 represents the mass of a body that is not moving and c is the speed of light, which is about 3×105 km⋅sec−1 or about 186,000 mi⋅sec−1.
text: where c is the speed of light.
text: where n is the index of refraction, c is the speed of light in a vacuum (3.0 x 10^8 m/s) and v is the velocity of the light in the medium.
text: Where M is the relativistic mass, m is the rest mass, c is the speed of light in a vacuum and v is the velocity.
text: L = CT, where C is light speed and T is the period of the light wave.