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Re:The laser and microphone atop Mars 2020, NASA's next rover by m-watson on Tuesday February 11, 2020 @08:46AM (#22298383)
If you have a math/physics/chem background this is a good book [0]. I used it in my grad course on spectroscopy, it does a decent job walking through the concepts step by step. Spectroscopy is fascinating though, I used Raman Spectroscopy for my research, the amount of information you can get out of some lasers, mirrors, and gratings is amazing.

[0] https://www.wiley.com/en-us/Modern+Spectroscopy%2C+4th+Editi...

Re:The laser and microphone atop Mars 2020, NASA's next rover by dmix on Tuesday February 11, 2020 @12:12PM (#22300149)
I don't have a strong background in those in particular besides relearning basic math (up to linear algebra) and taking an online course in biology. So that one would probably be over my head.

I just want to know how everything works, it's just a matter of priority :)

The other commenters video did a pretty good overview at a basic level.