how can radiation penetrate eveything but still leaves no visible holes

Question

how can radiation penetrate eveything but still leaves no visible holes

In: Physics

Answer 1

Radiation is just light (for simplicity’s sake). Take visible light, for example. That’s a kind of light that passes through air pretty well, walls no so much. The wifi in your router is another kind of light, and it can pass through walls pretty easily.

Infrared light doesn’t leave holes, but it DOES interact by making a lot of things hot. Radiation interacts with things in a similar way. (well, not exactly, but this is ELI5)