Unlabeled

Wavelength of AM radio across the dial

At the bottom of the AM dial, 540 kHz, each radio wave is 555 m long from crest to crest. At the top, 1700 kHz, it is 176 m.

What does this axis measure?
What does this axis measure?
Wavelength of AM radio across the dial: 30 points, a line chart.
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Wavelength (m)
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Radio frequency (kHz)
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The data: 30 points
Radio frequency (kHz)Wavelength (m)
540555.2
580516.9
620483.5
660454.2
700428.3
740405.1
780384.3
820365.6
860348.6
900333.1
940318.9
980305.9
1020293.9
1060282.8
1100272.5
1140263
1180254.1
1220245.7
1260237.9
1300230.6
1340223.7
1380217.2
1420211.1
1460205.3
1500199.9
1540194.7
1580189.7
1620185.1
1660180.6
1700176.3
Source
Computed: wavelength = speed of light / frequency (NASA), with c = 299,792,458 m/s (NIST, CODATA 2022), over the AM carrier frequencies of 47 CFR 73.14 (FCC)
Licence
Public domain (U.S. government works: NIST, eCFR, NASA)
Read
2026-10-02
Drawn
30 points as the puzzle showed them · line
  • Ran in puzzle #11 on October 7, 2026. Play it