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Crazy Tosser
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Seriosly, waves have different frequencies, and light is somewhere in the middle of the EM spectrum, then maybe the right or left side could travel faster than c
Phlogistonian said:All massless waves (and all massless particles) travel at the speed of light.
The phase velocity of a wave is a product of the frequency and wavelength:Crazy Tosser said:Seriosly, waves have different frequencies, and light is somewhere in the middle of the EM spectrum, then maybe the right or left side could travel faster than c
Danger said:That includes gravity, by the way.
I think that in one regard, you can say that not all waves travel at c in vacuum, but I'm not sure if my reasoning applies. It seems to me that the matter waves associated with a particle can't do so, since the particle itself can't.
_Mayday_ said:If by speed of light you mean around [itex]3\times10^8[/itex] then I can't see how that is correct.
Phlogistonian said:The original question was about waves in a vacuum.
_Mayday_ said:That doesn't make what you said correct.
Crazy Tosser said:Well, how about traveling slower than the speed of light? If you are in a car that's goin at 100mph and you light a flashlight backwards, does the light travel at c-(100mph)?
bassplayer142 said:Has it been experimentally proven that gravity waves travel at the speed of light.
Crazy Tosser said:Well, how about traveling slower than the speed of light? If you are in a car that's goin at 100mph and you light a flashlight backwards, does the light travel at c-(100mph)?
The speed of light in a vacuum is approximately 299,792,458 meters per second (m/s). This is often denoted as c in equations.
Yes, the speed of light applies to all types of electromagnetic waves, including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.
This is due to the fundamental properties of vacuum, which is the absence of any medium. Light is made up of electric and magnetic fields that are self-sustaining and do not require a medium to propagate. Therefore, the speed of light is constant in a vacuum.
Yes, according to Einstein's theory of relativity, the speed of light is the fastest possible speed in the universe. Nothing can travel faster than the speed of light in a vacuum.
The speed of light is slower in other mediums, such as air, water, or glass, due to the interaction between light and the particles in the medium. The speed of light in a medium is denoted as v and is always less than the speed of light in a vacuum.