fizik
Storyboard Text
- What are you doing? Don't you know anything about Ultraviolet waves?
- Ugh. Doesn't she see I'm trying to catch some rays? I'm white as a ghost!
- Don't mind if I do, after I put on my sunblock I'll join you and fill your head with UV info!
- I'm trying to boost my vitamin D. I know that's a benefit of UV waves. But...if you're so smart on UV waves why don't you tell me all about them?
- So, I just did a report on this in science! It was discovered by Johann Ritter in 1801. He actually did this weird experiment by taking photographic paper and showed how it would turn black faster in blue than red light. And guess what? It worked! This proved there is ultraviolet light.
- You don't say....
- My brain hurts.
- It's true! And it's considered radiant energy and has frequencies of about 8 x 1014 to 3 x 1016 cycles per second. It's wavelengths are short and about 400 nm on the visible light end and only about 10 nm on the x-ray side. With all that said, it mostly falls on the invisible part of the light spectrum on the blue/violet side.
- Well, if you don't use sunblock your whole body will hurt from the UVB waves. UV waves are classified into 3 different catergories. UVA is the harmless ones like blacklights. UVB are the ones that can burn our skin and cause cancer and they also can disinfect medical equipment. UVC are extremely dangerous but luckily they don't penetrate our atmosphere!
- Hmm. Didn't realize all that. Maybe tanning isn't a good idea. Got more sunblock?
- Great choice! It's amazing to learn about UV waves. Oh! One more fun fact to "enlighten" you, most insects can see UV light!
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