Timeline for May I treat units (e.g. joules, grams, etc.) in equations as variables?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| May 16, 2015 at 3:11 | comment | added | Kevin | You would probably have more success working with Kelvins and degrees Rankine. | |
| May 15, 2015 at 19:38 | comment | added | Yogu | @jvriesem: Watch out, those symbols you wrote there are not the units, but represent the numeric values of a value given a specific unit. It's The temperature in degrees Fahrenheit is 9/5 times the temperature in degrees Celsius plus 32, not 1 degree Fahrenheit is .... You correctly wrote them in italics. | |
| May 15, 2015 at 19:10 | comment | added | jvriesem | Fahrenheit and Celsius can be used in equations just like any other physical unit: $F = \frac{9}{5} C + 32$. They can also be used in any equation where the temperature is assumed to be in those units (as for older empirical formulae). Celsius units can be used in any equation requiring either Celsius or Kelvins when it's the difference in temperatures that's important, since they share the same scaling relation (a change of 1 K is the same as a change of 1 degree Celsius). Of course, an absolute scale is required for any physical equation. | |
| May 15, 2015 at 15:39 | comment | added | Kos | @R.M. Is it even allowed to use F and C in equations? I mean, what would 2*10°C be? How about 2*0°C? Easy to run into contradictions | |
| May 15, 2015 at 15:15 | comment | added | Martin - マーチン♦ | If you mean Fahrenheit and Celsius, I agree and will try to cover that as soon as i get the chance. | |
| May 15, 2015 at 15:04 | comment | added | R.M. | It may be worth explicitly discussing units like F and C which don't have "natural" zero points. Can you still treat them as constants? | |
| May 14, 2015 at 21:02 | vote | accept | Hal | ||
| May 14, 2015 at 12:53 | history | answered | Martin - マーチン♦ | CC BY-SA 3.0 |