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No, an X-ray is not a mechanical wave. An X-ray is an electromagnetic wave. However, in polar molecules, an X-ray can cause the molecule to vibrate rapidly, just like a microwave oven can.
X-rays vs Gamma rays. Gamma rays, x-rays, visible light and radio waves are all types (forms) of electromagnetic radiation. Electromagnetic radiation can be described in terms of a stream of photons, which are particles without mass, each traveling in a wave-like pattern and moving (circling) at the speed of light.Ã We will examine the x-rays and the gamma rays.