US Military
Jun. 06, 1957 - The American Army's Sun-Powered Helmet Radio: Tiny silicon wafers, or solar batteries, grouped in long narrow clusters on the crown of the American Army's famous helmet radio, can provide all the electrical power needed to operate the transmitter- receiver. Like the original helmet radio, the sun-powered version is a development of the U.S. Army Engineering laboratories, Fort Mohmouth. Teamed with small nickel - cadmium storage batt3eries for park power and night-time operation, the solar cells can provide current for as much as a year, as compared with dry-cell life measured in hours. Photo Shows: The sun-powered helmet radio is worn here by SP3 David Sturck
Picture No
13181914
Media ID
46921341
Size
5531px x 4473px
(1.5MB)
Credit
(c) Keystone Pictures USA/ZUMAPRESS.com/Mary Evans
Usage Restrictions
Editorial Use Only - No Property or Model Releases. For any non-editorial use, please contact Mary Evans direct
Source
Keystone Pictures USA
