Signedunsigned.
Historical AttributesThe Chaffee quenched spark gap was devised by E. Leon Chaffee at Harvard University in about 1910 while working on his doctoral dissertation (completed in 1911). The Chaffee gap could produce continuous oscillations for long-distance telephone transmissions. Chaffee filed a patent for the "Apparatus for and method of exciting electric oscillations" on Novemberr 4, 1911. This is an example of one of Chaffee's experimental models.