Siemen’s Measurement of the Speed of Light

In December of 1875, Werner von Siemens, German electrical engineer and inventor (the person who founded the company currently called Siemens and makes toothbrushes etc) also performed an experiment to measure the speed of light. His contributions have been mostly forgotten (the HSC syllabus only mentions Fizeau, Focoult, Roemer, Bradley) and his records are very […]