Does a laser beam travel at the speed of light? How about radio waves?
A laser is only light, so yes it travels at the speed of light. Remember that laser stands for Light Amplification by Stimulated Emission of Radiation. Radio waves also travel at the speed of light because they are electromagnetic. They can travel in a vaccuum and unlike sound waves, do not rely on another medium, like air or water to move from one place to another. It helps to think of radio waves as simply the other end of the electromagnetic spectrum from light waves. They are all the same form of energy, except at different wavelengths.
