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![[parent]](https://images.physicslibrary.org/images/uparrow.png) Viewing Correction to 'momentum'
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Where mass? by pahio
Correction id: 4
Filed on: 2005-08-22 13:23:36
Status: Accepted on 2005-08-22 17:29:33
Type: Meta/Minor
Correction text:
I think you have forgot to put $m$ in the first equation.
Would it be better to use ":=" in the defining equations, instead of the 'congruence' mark?
Jussi |
Comment from object owner pbruin:
Thanks, I fixed the formula p = mv. As for the \equiv sign, it is true that mathematicians usually use one of
a = b, a := b, a =_{df} b, a \buildrel{\rm def}\over= b
(the last produces an equality sign with "def" written above it in small type). I'm less familiar with physicists' habits, so I took a quick look at 8 of my physics books; 5 of them (by 3 different authors) use a \equiv b and 3 (by 3 different authors) use a = b. So apparently \equiv and = are accepted choices in physics.
One problem I do have with the \equiv sign is that it looks ugly in the PNG pictures. On the other hand, using \equiv rather than = makes the difference between definitions and other equations clearer, so I chose to stick to \equiv.
Thanks,
Peter |
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