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phys: correct image access

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eggy 2020-12-09 13:13:02 -05:00
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docs/sph3u7.md
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@ -676,7 +676,7 @@ $$
Inside an **air column**, the difference in pressure allows for the formation of standing waves as waves reflect off of the interface where air changes pressure. A closed end must have nodes while open ends must have antinodes.
<img src="/resources/images/standing-tubes.png" width=700>(Source: Kognity)</img>
<img src="/resources/images/standing-tube.png" width=700>(Source: Kognity)</img>
Resonance occurs in an air column when the length of the open tube is a multiple of half the wavelength of the sound. **Resonant lengths** occur at each antinode.