Remembering EM spectrum

[705340227]

Do we have to remember the order and which types of light have smaller and bigger wavelengths for the EM spectrum? If so, what are some easy ways to remember the order?

[MichaelRaad_1F]

I don't think we would need to memorize all of them but I'm not too sure.

[bgiorgi_3A]

During office hours this past week we discussed the importance of knowing the general EM spectrum. It is not necessary to know the exact measurement of each region, however you should know that the visible light spectrum is from 400 to 700 nm. I think it is also important to know basic conversions like one nm is equal to 1x10^-9 m and one pm is 1x10^-12m.

You should also know: infrared>visible>uv>x rays> gamma rays

[Danielle Goldwirth 3F]

To build on the previous comment, during a step up session this week, it was made clear that we might receive questions asking us to identify the electromagnetic radiation type based on the wavelength we calculate.
So it is good to know that:
100nm to 400nm is UV
400nm (violet) to 700nm (red) is visible
700nm to 1mm is infrared.
These will likely be the focus, so if we ever see a long wavelength like 900 nm, it'll be infrared.

[Britney Tran IJ]

During one of the step up sessions, the ua said that we'd only need to remember the visible light spectrum (ROYGBIV) but I'm not sure!

[Jaden Kwon 3C]

I don't think you should memorize the exact wavelengths and frequencies for each of EM radiation, but you should have a general idea on which waves have higher/lower frequencies and energies.

[Joanna Huang]

In Professor Lavelle's lecture, he mentioned that our class would be mainly dealing with the wavelengths of anything from microwave to x-ray. The order of the list from largest to smallest wavelength would be microwave (1 mm), infrared (1 micrometers), visible light (aka the ROYGBIV colors, from 700-400 nm), UV (100 nm), x-ray (1 pm). I don't think you necessarily have to memorize the exact number for the wavelength, but you should probably know the general order.