Tagged Questions
2
votes
2answers
98 views
SI units with more than one prefix in fractions
Is it (in the view of SI) correct to note units with more then one prefix? I discuss this since several months with friends, but we could not find a proper source for our statements yet.
Examples for ...
0
votes
1answer
129 views
Spectroscopic notation $s$, $p$, $d$, $f$, $\ldots$
$s$ is sharp, $p$ for principal, $d$ for diffuse, $f$ for fundamental.
Where do all those term come from? I do not see any link with the corresponding shapes.
0
votes
2answers
133 views
When to use $f$ and when $\nu$ signifying frequency?
When to use $f$ and when $\nu$ signifying frequency? I guess that when you mean frequency of electromagnetic wave, you use $\nu$, and $f$ otherwise?
15
votes
1answer
1k views
Differentiating Propagator, Greens function, Correlation function, etc
For the following quantities respectively, could someone write down the common definitions, their meaning, the field of study in which one would typically find these under their actual name, and most ...
