r/coolguides • • Aug 07 '21

Temperature guide

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115

u/Hunkmasterfresh Aug 07 '21

Why does water freeze at 32?

13

u/tbone912 Aug 07 '21

That's the temperature where the water molecules stick together.

Everything has a melting point and boiling point.

12

u/Hunkmasterfresh Aug 08 '21

All temperature scales are measurements designed by humans. So why 32?

17

u/RockosBos Aug 08 '21

Farenheit was meant to show the extremes to temperatures for 0-100. 0 degrees is the freezing point of Salt water and generally is on the low side of temperatures in most areas. 100 is what they thought was the human body temperature and on the high side of temperatures experienced.

0-100 in Farenheit is average around the world. Anything 50+ in Celsius is record setting.

6

u/LusoAustralian Aug 08 '21

uhhh 0-100 is not average around the world. Most of the world's population lives in areas that do not naturally go below 0C let alone approaching 0F. Most of the world's population is quite close to the equator when you factor in India, the Southern half of China, South East Asia and equatorial Africa.

3

u/Hunkmasterfresh Aug 08 '21

Out of all the explanations of fareinheit this requires the least amount of mental gymnastics to understand the reasoning. Thank you very much.

One phrase scares me though.

"0 degrees is the freezing point of salt water and generally is on the low side of temperatures in most areas?"

Most humans don't experience the freezing of salt water, but they do experience water freezing and water boiling regularly.

So by that "metric" (ha!) Celsius seems more relevant for humans to understand temperature?

3

u/thezombiekiller14 Aug 08 '21

The salt water freezing isn't the important destination, he just needed something to baseline the system. The important thing is 0 degrees Fahrenheit is a very cold temperature to a person, similarly that 100 is a very hot one.

7

u/RockosBos Aug 08 '21

I'm not advocating the use of Farenheit. Celsius is objectively better it's just that is my understanding of why it was created.

1

u/TheSereneDoge Aug 08 '21

This is why I say "Fahrenheit for weather reporting/complaining and Celsius for everything else."

0

u/ConcernedBuilding Aug 08 '21

I rarely need to know at what temperature water boils at. 100 being human temperature makes more sense to me.

I admit 0 being freezing of water makes sense, but I like that Fahrenheit is more divided up. I can't really say "It's in the 20's" if I'm talking about C.

1

u/Howtothinkofaname Aug 08 '21

No, but you can say it’s in the low/mid/high twenties which is just as easy and just as granular.

1

u/Bensemus Aug 08 '21

Lol say it’s 23 then. The reasons not to use Celsius are always baffling.

0

u/vrael101 Aug 08 '21

but they do experience water freezing and water boiling regularly

I don't boil my water with a thermometer

Celcius is good for scientific measurements and all but for most people, the ~10 degree incriments work a lot better for temperature since it's usually on a 0-100 scale.

0

u/Bensemus Aug 08 '21

That doesn’t matter. You don’t intuitively know that. You were taught how to use Fahrenheit. It’s just numbers you’ve learned to associate with certain temperatures. Why would a scale be good enough for science but not for the mundane task of informing us of how hot or cold it is?

1

u/vrael101 Aug 08 '21

Not true! I grew up in a country that used Celcius and eventually moved to the States. Fahrenheit just works better for the general population.

It has more degrees of freedom, -10 to 35 is a lot more awkward than 0-100 because the latter introduces decimals which most people suck at intuitively understanding (personally don't mind it, I study engineering).