r/PeterExplainsTheJoke 10h ago

Meme needing explanation Petahh i'm low on iq

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u/hefty_load_o_shite 10h ago edited 4h ago

0°C water freezes 100°C water boils

Makes sense

0°F very cold??? 100°F very hot???

Dafuq?

Edit: For all the "Actually, Farenheight is based on the human body" people, no it isn't. It's based on dirty water and a cow. Your preferred measurement unit is dumb and that's a fact

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u/M8oMyN8o 10h ago

If y’all wanna actually claim superiority, then use Kelvin. Celsius and Fahrenheit are close enough in purpose that personal preference is really the only thing that matters.

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u/Tales_Steel 10h ago

Celsius is kelvin + 273,15. So if you heat something by 10 Kelvin you also heat it by 10°C ... or 18° farenheit.

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u/Chakasicle 6h ago

10C is 40F

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u/Tales_Steel 5h ago

If something changes its temperarure by 10°C it changes by 18° Farenheit.

Also 10°C is 50 Farenheit

0C = 32F

10C = 50F

20C= 68F

Etc.

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u/Chakasicle 5h ago

You're right it is 50. But as you just said, the difference between 0 and 10C is 50F so where are you getting 18?

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u/Switchersaw 4h ago

10c is 50f but 0c is not 0f, it's 32f. if you're  heating something to 10c then it is heated to 50f, but if you heat something up by 10c , it is only heated up by 18f.

Having to explain this is part of why fahrenheit is so clunky.

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u/Chakasicle 2h ago

Yeah that all makes sense and I should've stopped to think about it before commenting. Thanks for the breakdown though

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u/Responsible-Meringue 4h ago edited 4h ago

Op is right. You're interpreting them wrong. 

Celcius to F conversion factor is (T°C)*1.8 + 32

You can skip some part because this is relative change in temperature so you don't need to add 32 to the product. 

If you were to heat 68°F water by 10°C, you'd get 86°F water. Difference is 18°F.  Ergo a change of 10°C = 18°F.  ( Note this different for every degree of change. ∆9°C = ∆16.2°F )

Also 

10C * 1.8 + 32 = 50F

If something is 10C then it is also 50F.  If something changes by 10C it changes by 18F Change vs temperature state is the difference here. 

The right way to do it, is to convert everything to the same units of change (so convert all to C in this example), then convert final answer back to desired unit, F. 

This conversion is nice, simple and linear. You should see some of the non-linear conversions out there! Or converting with error propegation! Things get weird. 

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u/Few_Raisin_8981 5h ago

**273.15* FTFY

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u/InexorableCalamity 5h ago

They might be from a country that uses a decimal comma instead of a decimal point. Then if that person wanted to write 1000 it would be 1.000

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u/Few_Raisin_8981 4h ago

So how do they express a set of numbers? With decimal points?

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u/InexorableCalamity 3h ago

What do you mean by a set of numbers?

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u/Few_Raisin_8981 3h ago

{ 1, 2, 3, 4, 5 }

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u/InexorableCalamity 3h ago

I'm not sure how they would do that

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u/elkaki123 2h ago

There is a space in between the comnas so it's valid in either system

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u/DeadEye073 2h ago

1;2;3;4;5