Carl August von Steinheil
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Carl August von Steinheil was a German physicist, inventor, engineer and astronomer.
Reading telescopes by C.A. Steinheil purchased in 1865 on display in the Teylers Instrument Room
Ground (electricity)
Videos
In electrical engineering, ground or earth may be a reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.
Metal water pipe used as grounding electrode
Busbars are used for ground conductors in high-current circuits.
3 ply static dissipative vinyl grounding mat shown at macro scale