The highest energy form of electromagnetic radiation is gamma rays. Gamma rays have the highest frequencies and shortest wavelengths among all the forms of electromagnetic radiation.
The electromagnetic spectrum consists of a wide range of wavelengths and frequencies, with gamma rays residing at the high-energy end. The frequency of gamma rays typically ranges from 10^19 Hz to 10^24 Hz, corresponding to wavelengths on the order of picometers (10^(-12) meters) or smaller.
Comparatively, visible light, which is just a small portion of the electromagnetic spectrum, has frequencies ranging from approximately 4.3 x 10^14 Hz (violet light) to 7.5 x 10^14 Hz (red light). This corresponds to wavelengths of about 400 to 700 nanometers (10^(-9) meters).
In summary, gamma rays have significantly higher frequencies and much shorter wavelengths compared to other forms of electromagnetic radiation, including visible light. They are produced in various astrophysical processes, nuclear reactions, and particle interactions, and are used in fields such as medicine (in radiation therapy) and research (in gamma-ray astronomy and nuclear physics).