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NOAA Photo Library Image - theb2183

Flash and sound ranging survey as practiced by Charles Wilkes. Shoot cannon - see flash - measure time till hear sound - determine distance

Image ID: theb2183, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: South Pacific atoll
Photo Date: 1839
Credit: In: The Magnificent Voyagers

Category: Navigation/Astronomic/Sextant/

• High Resolution Photo Available




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Last Updated: April 30, 2013