Why do farenheit and celcius meet at 40 degrees above and below?
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XOIIO (
18328
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December 23rd, 2009
Seriously, how the hell does that work?
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8 Answers
Celcius to Farenheit: multiply by 9/5, add 32 (100°C x 9 = 900. 900 / 5 = 180. 180 + 32 = 212°F)
Farenheight to Celcius: subtract 32, multiply by 5/9 (212°F – 32 = 180. 180 / 9 = 20. 20×5 = 100/°F).
Plug in your numbers
-40°F – 32 = -72. -72 / 9 = -8. -8×5 = -40°C
-40°C * 9 = -360. -360 / 5 = -72. -72 + 32 = -40°F
(They don’t meet at 40° above zero. 40°F is 4 4/9°C. 40°C is 104°F)
Oh my mistake about above. I guess this question is useless now. I’ll let it stand as a testiment to my stupidity, Unless I can delete it.
Cue the mods :) thx in advance
No stupidity. Just misinformed. Very different.
LOL Yeah I was just kidding :)
They meet at minus 40 only. As linear scales they can only meet at one point.
Math
Oh, and only at -40°F and -40°C
If you had a centimeter ruler and an inch ruler, you would normally line them up matching the zeros.
The Celsius and Fahrenheit scales are like that, but lined up at -40 instead of 0.
In these parts, -40, on any scale, is damned cold!
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