Figure 9 shows both microphones and both speakers, the 30.3 megacycle speaker at left, and part of the 117.9 megacycle speaker at upper right. The work bench in the bathroom can also be seen in this photograph

• 1944-09-22

This digital image is a surrogate of an item from the Robert William Young Papers, 1920-2002

Verso marked 1723

• Enchantress (Ship)

• Sound--Transmission
• Underwater acoustics
• Underwater acoustics--Research
• World War, 1939-1945--Science

• image

• University of California

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2020-10-26