Dr. Robert (Bob) Novella
speaker
1,941 appearances
6 recordings
1 series
first heard May 2026
last heard 19 Sep
Dr. Robert (Bob) Novella’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 6 in all, peaking in Aug 2026 with 3.
Appearances
You could see like this wave of ignited gas traveling down.
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So that's the flame front.
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The front of that is the flame front and it can move slowly or that flame front can move very fast depending on many variables.
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Like for example, oh, the type of gas that you're burning.
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If that flame front, if it burns faster than sound, right, if it burns really fast, now the unburned gas ahead of that flame front, it's not pushed away.
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It becomes a shockwave, and its temperature and pressure rise almost instantaneously to very high levels.
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And this shockwave, that shockwave is a detonation wave.
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That's what we're talking about.
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So if a combustion process has a subsonic flame, a conventional subsonic flame, you're burning by thermal conduction.
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That's called not a detonation.
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That's a deflagration process.
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What?
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Deflagration.
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D-E-F-L-A-G-R-A-T-I-O-N.
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Deflagration process.
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So fireworks, even jet engines use a deflagration process.
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Now, this is relatively slow.
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It's controlled.
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And therefore, it's a safe way to turn chemical energy into the energy of motion.
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And this is how most of our transportation works.
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Showing 401–420 of 1,941 · page 21 of 98
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