Can't all electromagnetic waves travel at light speed?

AI Thread Summary
Electromagnetic waves, including light, X-rays, radio waves, and microwaves, all travel at the speed of light (c) in a vacuum. However, when these waves pass through different media, their speeds are affected by the medium's refractive index, causing them to travel slower than c. The relationship between frequency and wavelength is maintained through the equations E=hf and C=fv. Thus, while the speed of light is a constant in a vacuum, it varies in other materials. Understanding these principles clarifies the behavior of electromagnetic waves in different environments.
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1. The problem statement, all variables and given/known
Is it true that nothing can travel faster than the speed of light? Can't all electromagnetic waves travel at light speed. Also, if the speed of light is a constant, is the speed of the other electromagnetic waves a constant such as x rays, radio waves, and microwaves?


Homework Equations



E=hf C=fv

The Attempt at a Solution

 
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