- optical track circuit
- оптическая рельсовая цепь
Англо-русский железнодорожный словарь. 2013.
optical track circuit
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Optical heterodyne detection — is an important special case of heterodyne detection. In heterodyne detection, a signal of interest at some frequency is non linearly mixed with a reference local oscillator (LO) that is set at a close by frequency. The desired outcome is the… … Wikipedia
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Capacitance Electronic Disc — Capacitance Electronic Discs The CED, exposed from protective caddy Media type video playback media Capacity 60 minutes NTSC video per side, 27,000 frames per side[ … Wikipedia
Sensurround — is a process developed in the 1970s by Universal Studios to enhance the audio experience during the presentation of theatrical movies. Specifically developed to showcase the 1974 film Earthquake , the process was also used in three subsequent… … Wikipedia
Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… … Wikipedia
