well... i think that light has a fixed speed (my assumption) 299,792,458 meters per second in a vacuum. But how to calculate the speed of anything is speed = distance/ time
To calculate he speed of light you need to know the refractive index (RI) of the medium through which it is travelling. As stated above light has a constant speed in a vacuum, this speed is attenuated by the refractive index of the given medium
c/RI
The speed of light in a substance is '1' divided by the square root of [ (electrostatic permittivity of the substance the light is moving in)
times
(magnetic permeability of the substance the light is moving in) ].
Maxwell's Equations
the speed of light equals the frequency multiplied by the wavelength.
c = the constant value for the speed of light, or 3.00x 108. If you use this numerical value in your wavelength formula, you will be able to solve correctly.
20 million years, if you travel at the speed of light. For other speeds, use the formula: distance = speed x time. Solving for time, time = distance / speed.
The formula for the speed of light, in vacuum, isc = 299,792,458 meters/second . where ' c ' is the speed of light.In any material substance, the speed of light isc/(the index of refraction for that substance) . Gamma rays, radio waves, and all other members of the electromagnetic spectrumbetween those, all have the same speed.
Assuming the speed of light in air is already known (it is close to the speed of light in a vacuum), you might check how the light refracts when it changes from air to water (at what angle), and then use Snell's Law.
Speed of light in water = speed of light in vacuum/refractive index of water
That depends on the speed. Use the formula distance = speed x time.That depends on the speed. Use the formula distance = speed x time.That depends on the speed. Use the formula distance = speed x time.That depends on the speed. Use the formula distance = speed x time.
Refractive Index= Speed of Light in Vaccum / Speed of Light in the material
Celeritas means 'at the speed of light'. In Einstein's formula E=MC2, the 'C2' stands for 'the speed of light times the speed of light, or, the speed of light times itself, or, the speed of light squared.
the speed of light equals the frequency multiplied by the wavelength.
c = the constant value for the speed of light, or 3.00x 108. If you use this numerical value in your wavelength formula, you will be able to solve correctly.
20 million years, if you travel at the speed of light. For other speeds, use the formula: distance = speed x time. Solving for time, time = distance / speed.
speed of light
speed = distance/time
Mass of a body and its speed are needed to calculate kinetic energy. Kinetic energy of an object = mv2/2 This formula is useful only when object's speed is much less than speed of light.
The formula for the speed of light, in vacuum, isc = 299,792,458 meters/second . where ' c ' is the speed of light.In any material substance, the speed of light isc/(the index of refraction for that substance) . Gamma rays, radio waves, and all other members of the electromagnetic spectrumbetween those, all have the same speed.
wavelength = c/frequency of light where c is the speed of light.