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Can Plasma Be Invisible? EUV Lithography Says Yes.
Next in the "Can Plasma?" series: can plasma be invisible? Yes. In fact, some of the most important industrial plasmas are. Time to walk back my own "see it and hear it" rule from a few episodes ago.
⏱️ Chapters
00:00 The question: is plasma always loud and visible?
00:05 Not really. The important cases usually aren't.
00:12 Three points: why we see plasmas, invisible cases, why it matters
00:21 Natural plasma: lightning in air at high power
00:34 Arcs produce vibrational and electronic excitation, which relaxes into light
00:47 My undergrad rule: "if you can see it and hear it, there's…
The skinny
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