EM radiation

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A Raab 1K
Posts: 56
Joined: Sat Aug 24, 2019 12:16 am

EM radiation

Postby A Raab 1K » Tue Oct 15, 2019 2:34 pm

How do we know what wavelengths correspond to which types of electromagnetic radiation? Do we have to know them for the tests or will they be given to us?
For ex, when a question asks what electromagnetic radiation has a wavelength of 8.84 nm?

Rachel Yu 1G
Posts: 113
Joined: Fri Aug 09, 2019 12:15 am

Re: EM radiation

Postby Rachel Yu 1G » Tue Oct 15, 2019 2:41 pm

I don't think we have to memorize specific values of the EM spectrum but it would be good to know the relative amounts (like x rays have a smaller wavelength than infrared, etc.)

Natalie Nartz 4F
Posts: 50
Joined: Thu Jul 11, 2019 12:17 am

Re: EM radiation

Postby Natalie Nartz 4F » Tue Oct 15, 2019 3:04 pm

I don't think we'll have to memorize the specific values. But I think memorizing the order of the types of radiation in terms of wavelength would be beneficial. I think it would also be good to memorize the range of visible light which is around 400-700nm

kristi le 2F
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: EM radiation

Postby kristi le 2F » Fri Oct 25, 2019 11:45 pm

It may also be good to know the general trends of EM radiation. For example, gamma rays have short wavelength and high frequency while radio waves have long wavelength and low frequency with visible light in the middle.

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