From Google:
Suntan and sunburn are familiar effects of over-exposure of the skin to UV, along with higher risk of skin cancer. Living things on dry land would be severely damaged by ultraviolet radiation from the Sun if most of it were not filtered out by the Earth's atmosphere.[1] More-energetic, shorter-wavelength "extreme" UV below 121 nm ionizes air so strongly that it is absorbed before it reaches the ground.[2] Ultraviolet is also responsible for the formation of bone-strengthening vitamin D in most land vertebrates, including humans.[3] The UV spectrum thus has effects both beneficial and harmful to human health.
Certain high-frequency radiations are likely to cause harm to astronauts landing on Mars. A detector for which type of electromagnetic radiation is most suitable to study this harmful radiation on Mars?
I think it is radio waves
A. Infrared
B. Radio waves
C. Ultraviolet
D. Visible light
1 answer
0 answers