All forms of electromagnetic radiation have the same speed of transmission.

Name: All forms of electromagnetic radiation have the same speed of transmission.
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All forms of electromagnetic radiation, including radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays, travel through a vacuum at the speed of light, which is a constant value of approximately 299,792,458 meters per second (or about 670,616,629 miles per hour).

All Forms of Electromagnetic Radiation Have the Same Speed of Transmission