Researchers are marking November 16, 2004 as the 100th birthday of
electronics, which began with British scientist John Ambrose Fleming's
1904 invention of the first practical electronic device. Known as the
thermionic diode, this first simple vacuum tube, containing only two
electrodes, could be used to convert an alternating current (ac) to
a direct current (dc).
A special AVS meeting session, taking place exactly 100 years after
the day that Fleming applied for a British patent on the diode, will
celebrate this seminal invention and the subsequent evolution of electronic
components based on vacuum devices. (Contact Fred Dylla, Jefferson Lab
in Virginia, firstname.lastname@example.org, and Paul Redhead of the National Research
Council in Canada, email@example.com; more information on this and other
AVS meeting stories at http://www2.avs.org/symposium/anaheim/pressroom/news.pdf).