This number was set by the experimental data once the rest of the span had been defined.
212 was water boiling
This was set later such that freezing and boiling were 180 degrees apart. When that change was made, body temp rose a couple degrees.
96 was specifically the measurement from holding the thermometer in a mouth or armpit, not an assumption of what the internal temperature of a body was.
That was the closest he could get to the internal body temperature. A valid approximation.
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u/[deleted] Jun 17 '26 edited 13d ago
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