ELI5: Explain Like I'm 5

Photon energy

A photon is a tiny bundle of energy, like a tiny bubble. Photons are made of light, and they have different amounts of energy. When a photon has more energy, it is more powerful. The more energy a photon has, the brighter it will be. Think of it like a flashing light with more energy would be brighter than a light with less energy.
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