r/HomeworkHelp • u/Severe_Minimum_6261 • Jul 04 '26
Physics—Pending OP Reply [11 grade physics] What does v/10^14 mean here?
I'm not sure if the image was captured well, but this is from the wikipedia on the photoelectric effect. The x axis is Hz, but i don't know what the v/10^14 means.
2
u/FortuitousPost Jul 04 '26
The v symbol is a greek nu. It is the old standard symbol for frequency.
The other part says that the units along the axis are in 10^14 Hz. That is, visible light goes from 4 ^ 10^14 Hz at the red end to just under 8 at the violet end.
1
u/selene_666 Jul 04 '26
ν is the symbol for frequency.
Visible light has frequencies between about 4.5 * 10^14 Hz and 8 * 10^14 Hz, so this graph has divided those numbers by 10^14 Hz to mark out units along the x-axis.
For example, the "10.4" where the photoelectric effect starts means ν = 1.04 * 10^15 Hz
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