this post was submitted on 25 Jul 2023
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cross-posted from: https://infosec.pub/post/789102

As Italy swelters under dangerous heat, McDonald's workers called a strike after their air conditioning broke in oppressively hot kitchens.

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[–] [email protected] 197 points 1 year ago (4 children)

That’s 40c in normal units :)

[–] [email protected] 80 points 1 year ago (5 children)

Thanks. Whenever I see Fahrenheit units I have no fucking idea of what the actual temperature is meant to be

[–] [email protected] 66 points 1 year ago (1 children)

Yeah i know what u mean, and since the article is about italie which uses celcius its even weirder :)

[–] [email protected] 34 points 1 year ago (1 children)

I browse shit on Amazon Japan, and the sizes are in inches, eagle heads and football fields. We use the metric system here, Amazon!

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (2 children)

Doesnt japan also drive on de left side of the road? Because ive noticed that countries that drive left tend to use mixed, like the uk uses cm and inch (also stone which i really dont understand). But thats just my brainfart

Should be just one. Banana for scale. ALL scale(s)

[–] [email protected] 3 points 1 year ago

Yup, we drive on the left side ;)

[–] [email protected] 13 points 1 year ago* (last edited 1 year ago)

One helpful tip I've figured out. 100 foreignheight is body temperature. So if it's around 100°F it's around 38°C.

[–] [email protected] 11 points 1 year ago* (last edited 1 year ago) (1 children)

So the proper conversion from Celsius to Fahrenheit is F = 9/5C + 32

But an easy way to do it (roughly) from Celsius to Fahrenheit is double it and add 30.

To convert from Fahrenheit to Celsius is subtract 30 then halve it.

[–] [email protected] 0 points 1 year ago

That's a real lifehack!

[–] [email protected] 3 points 1 year ago* (last edited 1 year ago)

I think about the difference between the two using differences instead of absolutes. That looks like this:

It's kind of hard to do this calc:

F = [ (9/5) * C ] + 32

Or this one:

C = (5/9) * (F - 32)

I refer to those as absolute equations. You have to take into account the pesky offset everytime you want to convert. What if we drop it? This makes:

F = (9/5) * C = 1.8 * C

C = (5/9) * F ~= 0.6 * F

I refer to those as relative or difference equations because if you subtract a temperature from the other, you get the same thing:

F1 = [ (9/5) * C1 ] + 32

F2 = [ (9/5) * C2 ] + 32

F2 - F1 = [ (9/5) * C2 ] + 32 - { [ (9/5) * C1 ] + 32 }

= [ (9/5) * C2 ] - [ (9/5) * C1 ] + 32 - 32

= [ (9/5) * C2 ] - [ (9/5) * C1 ]

= (9/5) [ C2 - C1 ]

F2 - F1 = (9/5) (C2 - C1)

∆F = (9/5) ∆C

So, why is this useful?

Say you have a temperature in Celsius and want to go to Fahrenheit. Simply multiply that number in your head by 1.8 (or think of this as multiplying by 180° as in trig) and finally add to 32. So, 1 °C is (1 * 1.8) + 32 °F or about 34 °F.

Going the other way is a little bit weirder. I make approximations when going the other way by thinking of 180° and how that can be divided. So, 180°, 90°, 45°, etc. corresponds to 1.8 °F (1 °C), 0.9 (0.5 °C), 0.45 °F (0.25 °C), etc. I also approximate by choosing the nearest multiple of 5 or 10 °C (9 or 18 °F). So, 44 °F is between 41 °F (5 °C) and 50 °F (10 °C), closer to 41. It's off by 3, which is about 3.6, which is 2 in Celsius world. This means 44 °F is about 7 °C.

Hope you get the gist! Celsius really is better. I remember this in a pinch:

10 °C = 50 °F

20 °C = 68 °F

30 °C = 86 °F

40 °C = 104 °F

50 °C = 122 °F

Etc.

The freezing temps are a little hard since you cross zero into negatives, but the extrapolation can help

[–] [email protected] 3 points 1 year ago (4 children)

A little helper to get a feel for it: 20°C is 68°F, 25°C is 77°F, 30°C is 86°F etc. Meaning, you just remember one or two combinations and then for every 5°C change it's 9°F up or down

[–] [email protected] 26 points 1 year ago (1 children)

Or America could stop pretending to be special and just use the metric system.

[–] [email protected] 10 points 1 year ago (1 children)

Right? You'd swear they invented the imperial system the way they latch on to it. Fucking ridiculous.

[–] [email protected] 7 points 1 year ago

I feel bad for american youth struggling in math and sciences. The imperial system has so much less connectivity between their units that the only way is to memorize all sorts of arbitrary numbers.

[–] [email protected] 14 points 1 year ago

Yeah this really not helping, me at least :)

[–] [email protected] 4 points 1 year ago

Nah. That math is so silly ill just ignore everything f

[–] [email protected] 1 points 1 year ago

This has been the most singularly useful tip in trying to equate F to C. Thanks!

[–] [email protected] 12 points 1 year ago

Thanks, real geniuses to not mention the unit when using Fahrenheits and talking about Italy...

[–] [email protected] 7 points 1 year ago

Isn't it nice the US and Liberia are imperial bros?

[–] [email protected] 1 points 1 year ago

Probably feels like 50 plus as they are moving around a lot.

[–] [email protected] 23 points 1 year ago (1 children)

That sounds very much illegal. I mean employing people under these temperatures.

[–] [email protected] 19 points 1 year ago (1 children)

Definitely should be. I'm not Italian, but I know other European countries that have temperature thresholds for work

[–] [email protected] 2 points 1 year ago (1 children)

In Poland we got minimum temp to work, but not maximum. Above certain degree, employer must provide free drinking water but there is no law that we can leave work if its hot enough.

[–] [email protected] 1 points 1 year ago

That sounds bad, sorry for you guys

[–] [email protected] 13 points 1 year ago (1 children)

Do they work in the deep frier or what?

[–] [email protected] 0 points 1 year ago

after all the fries are cooked, they will be too, saves time for mcdonalds

[–] [email protected] 7 points 1 year ago

My brother here in Texas was dealing with the same thing. He ended up walking out over it.

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