eli5: How does my UV flashlight have a higher uv index rating than the Sun

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When I measured the sun, it gave a UV index of 6. When I measured the uv flashlight, it gave a uv index of 196. Is the sun not more powerful in UV than the flashlight?

In: Physics

13 Answers

Anonymous 0 Comments

The sun is powerful but it’s very far away. The sun is also very hot but if you have a heater next to you you’ll feel that more than you feel the sun’s warmth. The sun is far away and its radiation spreads out the farther away you are. Ultimately the Earth, and more specifically the area you’re in, receives only a tiny fraction of the sun’s energy.

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