3 ms·
My first boss, at Spectra-Physics, was a brilliant guy named Joe Hawkins, who had temporarily taken the job as manufacturing engineering manager, having been fo
by aj7 8y ago
My first boss, at Spectra-Physics, was a brilliant guy named Joe Hawkins, who had temporarily taken the job as manufacturing engineering manager, having been forced out of a startup he helped found by some other asshole founders. He posed the question, “In heat transfer, what is the equivalent of inductance?,” and claimed to know the answer, Fermat margin-of-the-page style. Maybe you can take a crack at that.
- nabla9 8y ago> “In heat transfer, what is the equivalent of inductance?,” It's the aptly named thermal inductance (change in objects temperature induce a change in convection current surrounding the object). Heat -> kinetic energy transfer. (unit is thermal henry). You can even create thermal mutual inductance by putting two wires next to each other in a fluid. Electrical-analog method is well known for heat transfer analysis. Heat transfer equations are identical to electric recruits with passive components. Thermal inductance is almost never needed, so it may be little unknown. Back in the old times some even constructed electronic devices to solve transient flow problems using analogous resisistance-capacitance electrical networks. https://nvlpubs.nist.gov/nistpubs/jres/61/jresv61n2p105_A1b.pdf https://nvlpubs.nist.gov/nistpubs/jres/61/jresv61n2p105_A1b....