File:Brockhaus-Efron Oscillation 2.jpg

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Русский: Иллюстрация к статье Электрические колебания из энциклопедии Брокгауза и Ефрона
English: Micrometer spark gap detector used by German physicist Heinrich Hertz in his historic 1889 experiments in which he demonstrated the existence of radio waves. It consisted of a loop antenna consisting of a loop of wire with a spark gap that could be finely adjusted with a thumbscrew. With this he detected radio waves in the UHF range from a spark gap transmitter. From article "Electric Oscillations" in Brockhaus and Efron encyclopedia.
Date circa 1905
date QS:P,+1905-00-00T00:00:00Z/9,P1480,Q5727902
Source http://dic.academic.ru/dic.nsf/brokgauz_efron/146322
Author Брокгауз и Ефрон
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This image comes from the Brockhaus and Efron Encyclopedic Dictionary (1890-1907). The copyrights for that book have expired and this image is in the public domain.

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current21:27, 23 June 2009Thumbnail for version as of 21:27, 23 June 2009216 × 220 (15 KB)Lozman (talk | contribs){{Information |Description={{ru|Иллюстрация к статье ''Электрические колебания'' из энциклопедии Брокгауза и Ефрона}} |Source=http://dic.academic.ru/dic.nsf/brokgauz_efron/146322 |Date=

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