Sunburn and UV Radiation / Mr. Denjiro's Happy Energy! скачать в хорошем качестве

Sunburn and UV Radiation / Mr. Denjiro's Happy Energy!

DENJIRO: Today's topic is ultraviolet radiation, which causes sunburns. I have some cabbage butterfly specimens here. One is male and the other is female, but it is hard to figure out which is which. So, here's a smartphone with a camera that can emit UV radiation. The UV radiation comes out of the circle. Let's look at the butterflies with the camera. One seems dark, while the other seems white. The one that is dark because it absorbs UV radiation is the male, and the white one that reflects UV radiation is the female. They look the same to us humans as we can't see UV radiation, but for these butterflies that can see UV radiation, the difference is obvious. When you don't want to get tanned, you use sunscreen. There are actually two types. Let me apply them both and use the UV radiation camera again. One sunscreen is absorbing the UV radiation, so it looks dark through the camera. The other is reflecting UV, so it seems light. There are sunscreens that absorb UV radiation and ones that reflect it. Now, let me apply the sunscreen that absorbs UV radiation to my face and see how it looks through the camera when I have my glasses on. My glasses are black! Some eye glasses nowadays have been processed so that they protect your eyes from UV radiation. I hope energy will bring you all happiness. Our magic word is "Happy Energy!"