Dielectric test of Teflon plastic, 1940s. Laboratory technician placing a disc of Teflon tetrafluoroethylene resin, a DuPont industrial plastic, in a high-voltage testing set to measure its dielectric strength. The transformer oil bath serves as an insulator to prevent voltage flash-over during the test. Teflon's low dielectric loss factor made it an excellent insulator for high frequency equipment used in radar and television. Photographed in the 1940s, in Richmond, Virginia, USA. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Hagley Museum And Archive |
Bildgröße: | 3701 px × 4721 px |
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