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Re:Why A4? – The Mathematical Beauty of Paper Size by mongol on Monday September 05, 2022 @06:59AM (#32722931)
Yes, calibration of the thermometer. For example with sous vide cooking, it can be useful to know how accurate your equipment is since recipes are often expressed in precise temperatures.
Re:Why A4? – The Mathematical Beauty of Paper Size by bmitc on Monday September 05, 2022 @07:18AM (#32723066)
Thanks for the example, but I'm still not sure what that has to do with the scale since you only care about a single number in that case.

I need to look up sous vide cooking. I've never heard of it before. Seems pretty interesting.

Re:Why A4? – The Mathematical Beauty of Paper Size by cauefcr on Monday September 05, 2022 @12:50PM (#32726370)
You need at least two points to determine the slope of the thermometer, 0 and 100 as freezing and boiling point of water makes that reproducible.