Itravió- Ultraviolet radiation. There are two categories of ultravio- let light. Ultraviolet A (UVA) has a wavelength ranging from 320 nm to 400 nm. It is not so harmful to the skin and is neces- sary for the production of vitamin D. UVB, with a wavelengtha between 280 nm and 320 nm, is much more dangerous. because it causes skin cancer. (a) Find the frequency ranges of UVA and UVB. (b) What are the ranges of the wave numbers for UVA and UVB?

Itravió- Ultraviolet radiation. There are two categories of ultravio- let light. Ultraviolet A (UVA) has a wavelength ranging from 320 nm to 400 nm. It is not so harmful to the skin and is neces- sary for the production of vitamin D. UVB, with a wavelengtha between 280 nm and 320 nm, is much more dangerous. because it causes skin cancer. (a) Find the frequency ranges of UVA and UVB. (b) What are the ranges of the wave numbers for UVA and UVB?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter22: Reflection And Refraction Of Light

Section: Chapter Questions

Problem 2P

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