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How did you come by this knowledge?

I work with these lasers every day. This seems to be a decent write-up: [1].

Ah I see, thanks!

It's basic biophysics.

You didn't really answer the question.

Sure he did. Read biophysics textbooks I guess is a more direct answer?

Sometimes hacker news people finds it shocking that you can receive an education from places other than blog posts on Medium and Substack.

You mean taking a 7 week intensive code camp doesn't immediately grant me enlightenment?