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The gamma ray has the shortest wavelength (and shortest period) as well as the highest frequency (and highest energy) of all forms of electromagnetic radiation. That's the parâ¦t of the spectrum that we call gamma rays.
Violet. Violet waves have the most energy of the visible spectrum. Remember:  c=flambda Therefore:  f=c/lambda Here c is the speed of light in a vacuum. So: As wavelength decreases, frequency increases and, as E=hf, where h is constant (Planck's constant), so does the energy that the waves carry. Waves with a short wavelength have the most energy. Red waves have a relatively long wavelength (in the 700 nm range), and violet waves are much shorter - roughly half that. Because violet waves have the shortest wavelength of the visible light spectrum, they carry the most energy.