2.How fast to radio waves travel in a vacuum? How fast does red light travel in a vacuum? How fast to X-rays travel in a vacuum?
Answer (1)
Radio waves travel in a vacuum at the speed of light, which is approximately 299,792 kilometers per second (about 186,282 miles per second). This speed is constant for all electromagnetic waves in a vacuum.Red light also travels at the speed of light in a vacuum, roughly 299,792 kilometers per second. The difference in color or wavelength doesn’t affect the speed of light in a vacuum.X-rays, like all electromagnetic radiation in a vacuum, travel at the speed of light—about 299,792 kilometers per second. Their higher frequency and shorter wavelength do not change their speed in a vacuum.
