LIGHT AND SOUND
Light travels at ISG.OOO miles a second. Sound varies according to the medium it passes through; in free dry air it travels at 1,060 ft a second, in water at 4,600 ft a second.
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https://paperspast.natlib.govt.nz/newspapers/SUNAK19300219.2.155.5
Bibliographic details
Sun (Auckland), Volume III, Issue 901, 19 February 1930, Page 14
Word Count
37LIGHT AND SOUND Sun (Auckland), Volume III, Issue 901, 19 February 1930, Page 14
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