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Results tagged with vectors
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user 119091
Geometric object with magnitude (length) and direction.
4
votes
Accepted
What exactly does "Per Unit" refer to?
Per unit volume is just 'one quantity' of whatever unit you are using to measure volume. If you are using cubic meters as units, then 'flux per unit volume' would be $flux/m^{3}$, meaning there is tha …
- 491
0
votes
element of surface area versus vector element of surface area
The surface area element $dA$ represents a small area on the surface. $d\vec{A}$ represents a vector normal to $dA$ with magnitude $dA$.
Electric flux can be written two ways:
$$\int \vec{E} \cdot d\ …
- 491
3
votes
1
answer
569
views
How does a function represented in bra-ket notation become a vector of only coefficients?
I am learning quantum mechanics from the Miller Quantum Mechanics for Scientists and Engineers textbook. On page 97 it states that
$$f(x)= \sum_{n}c_{n}\psi_{n}(x)$$
becomes
$$|f(x)\rangle = \begi …
- 491