4 ms·
Isn't that rather the physicists way? Works well enough, used in a way not quite as intended by mathematicians, ... Disclaimer: I am physicist myself.
by _Microft 7y ago
Isn't that rather the physicists way? Works well enough, used in a way not quite as intended by mathematicians, ...
Disclaimer: I am physicist myself.
- _Microft 7y agoHa, I saw a downvote there! I'm fine with that - on the condition that you never, ever treat a differential operator like a fraction again ;)
- castratikron 7y agoPhysicists have their own battles, like electrical engineers using Ohm's Law as a definition of impedance.
- rrss 7y agoWhat's the battle there? How do physicists define impedance?
- castratikron 7y agoOhm's law is an empirical law that only holds in certain circumstances. A classic exercise is measuring the current and voltage across a lightbulb, plotting it, and measuring the slope of the line. The slope is the impedance. Then you turn up the voltage and watch the line turn into a curve, which is where the law breaks down and doesn't apply anymore. The engineers treat it like a definition and assume linearity over all voltage.
- Sharlin 7y agoMathematicians' way: Let a = distance in km; b = distance in mi; and φ = the conversion factor from mi to km. Then, a = φb.
- dghughes 7y agoWouldn't you start off using spherical cows?
- 19ylram49 7y agoLol