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Electromagnetic Spectrum

Posted: Thu Oct 10, 2019 9:22 pm
by tonyhu
For the course, do we need to memorize the wavelenghts of different waves like visible light?

Re: Electromagnetic Spectrum

Posted: Thu Oct 10, 2019 10:29 pm
by Eugene Chung 3F
It does not mention that in the class website "Learning outcome; Outline 2: The Quantum World" pdf, but some HW questions requires that knowledge.

Re: Electromagnetic Spectrum

Posted: Fri Oct 11, 2019 3:52 am
by sarahwu3a
I don't think you need to memorize all the wavelengths for light but knowing that visible is about 400-700nm is definitely going to be necessary!

Re: Electromagnetic Spectrum

Posted: Fri Oct 11, 2019 9:05 am
by Erik Buetow 1F
I don't know for sure, but I feel like it would be helpful to know both the lyman series (UV) and the balmer series (visible) and their corresponding energy levels and wavelengths.

Re: Electromagnetic Spectrum

Posted: Fri Oct 11, 2019 10:35 am
by Julia Mazzucato 4D
It'll probably be useful, especially with problems from photoelectric effect/atomic spectra lessons.
Here's a breakdown by wavelength from smallest wavelengths (highest frequency) to largest wavelength:

Gamma rays, <0.01 nm
X-rays, 0.01 nm - 10 nm
Ultraviolet, 10 nm - 400 nm
Visible Light, 400 nm - 700 nm
Infrared, 700 nm - 1 mm
Microwaves, 1 mm - 30 mm
Radiowaves, >30 mm