Here's why:

* Electromagnetic Spectrum: Light and infrared radiation are both part of the electromagnetic spectrum. This spectrum arranges electromagnetic waves by their frequency, from low frequency radio waves to high frequency gamma rays.

* Frequency and Energy: Frequency is directly related to the energy of a wave. Higher frequency waves carry more energy.

* Visible Light and Infrared: Visible light has a higher frequency than infrared radiation. That's why we can see visible light, but we can't see infrared radiation.

Let me know if you'd like to know more about the electromagnetic spectrum!