It is like light? Or heat or gas? Or small particles like dust? How does it harm us?
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Radiation is comprised of sub-atomic particles, that being, neutrons and protons and electrons.
They are expelled at insanely high speed from radioactive materials and damage organic tissue by tearing through cells. Think of them as microscopic bullets.
Now, radioactive material, like dust or dirt particles can be ingested and, from there, tear up the human body because those particles will continue to be shot out from the radioactive materials for thousands of years. So, once it’s in you, it’s going to do damage until it’s expelled or you die.
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