this post was submitted on 06 May 2025
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Celsius is the temperature scale of water.
One milliliter of water occupies one cubic centimeter, weighs one gram, and requires one calorie of energy to heat up by one degree Celsius; which is one percent of the difference between its freezing point and its boiling point.
100 to 1 relation kinda breaks the beauty a bit. But yeah, metric system is easy.
It's still convenient not due to some inherent laws, but because it was designed to be that.
So people used to counting non-trivial things in non-metric systems might a bit better understand what they are thinking about.
Also, eh, the obvious forgotten trait, 0 by Celsius being the freezing temperature (of some ideally clean distilled water, not really) is very convenient. 20 deg - normally hot, 15 deg - kinda normal, 10 deg - a bit chill, 5 deg - chill, 0 deg - definitely should wear more than a t-shirt, -5 deg - boring winter, -10 deg - crisp winter, -15 deg - good winter, -20 deg - how winter should be. The symmetry.
There's never gonna be a universally good unit for energy. Calories work well for heat, watt hours for stored or metered electrical energy, even electron volts for certain quantum physics. Plus the actual SI standard of joules.
Hate to break it to you, but I am not one cubic centimeter of water though
You’re more water than anything else though. Well, unless you ask a nuclear physicist. They’d say you’re more empty space than anything else. Don’t get me started on quantum physicists.
Except 100 C isn’t the boiling point, it’s 99.97 C, and that is only accurate if you define in an arbitrary pressure of 1 bar, which is defined as “Do not use” and was eventually stuffed into a measurement as dumb as the mile: 101325 Pa.
That’s true. Fahrenheit is just as flawed. It was originally created so 0° was the freezing temperature of brine (an inconsistent solution) and 100° as the average internal human body temperature (actually 98.6°).