Violet Light.
In the visible spectrum, violet light has the highest energy.

Here is a quick breakdown of how this works:
- Wavelength and Frequency: Visible light is made up of electromagnetic waves. Violet light has the shortest wavelength (around 380 to 450 nanometers) and the highest frequency of all visible colors.
- The Energy Connection: The energy of a photon (a particle of light) is directly tied to its frequency and wavelength, described by the equation E = hf (where E is energy, h is Planck's constant, and f is frequency). Because violet has the highest frequency, it carries the most energy.
- The Opposite End: On the other side of the visible spectrum, red light has the longest wavelength and the lowest frequency, giving it the least amount of energy.
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