Arrange synonyms in pairs: Fully, to do, to perform, to apply, velocity, rapidly, up-to-date, to permit, field, ordinarily, amount, swiftly, entirely, to employ, to convert, rate, completely, to allow, device, to let, instrument, to provide, value, to assist, to help, to aid, to transform, to wish, branch, quickly, commonly, generally, to want, to furnish, fast, to change, quantity, magnitude, modern, to desire, to supply, apparatus, to use, sphere, usually, speed.

Read and translate the text: “television”

Television provides a means of viewing the images of objects that are out of sight. The images of moving or stationary objects are converted into electric signals and these signals are transmitted by a television transmitter. The television receiver (TV-set) picks up these signals and performs the reverse conversion of electrical signals into the image displayed on the screen of a cathode ray tube (CRT). The tube in the television receiver, that provides picture display, is called the picture tube or kinescope. The image of an object is projected onto the camera tube. The electron beam of this tube scans the image point by point. The beam scanning is controlled by a scan unit. At the tube output, pulses corresponding to the image are generated. These pulses are usually termed the picture signals.

These pulses are amplified and used to drive the television transmitter, where they modulate the transmitter carrier. Transmission is usually achieved by amplitude-modulation techniques. The resulting radio-frequency vision signals are transmitted by the aerial and picked up by the receiving aerial, in which they induce an e. m. f.( electromotive force) corresponding in frequency and waveform to the transmitted signals. Received signals are fed to the video channel amplifier, which is essentially a pulse receiver. Here the signals are amplified and detected; the picture signals from the detector output are amplified and used to drive the television tube brightness control electrode.

The movement of the electron beam in the television tube must be strictly synchronous and in phase with the electron beam of the camera tube. This phasing is accomplished by transmitting special sync-pulses, provided by a synchronization generator (timer). These sync-pulses control the scan of the camera tube and are transmitted along with the picture signals. At the receiver, these sync-pulses are extracted from the composite video signal and used to control the operation of the scan. In television broad-casting, the sound signal is transmitted simultaneously with the video signal. The audio signal from a microphone is amplified and used to modulate the frequency sound channel carrier. Both transmitters feed one common aerial through a special coupling filter. The receiver aerial picks up the sound and vision radio frequency signals. After amplification, the sound signal is separated from the composite signal, amplified, and used to drive a loudspeaker.

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Arrange synonyms in pairs: Fully, to do, to perform, to apply, velocity, rapidly, up-to-date, to permit, field, ordinarily, amount, swiftly, entirely, to employ, to convert, rate, completely, to allow, device, to let, instrument, to provide, value, to assist, to help, to aid, to transform, to wish, branch, quickly, commonly, generally, to want, to furnish, fast, to change, quantity, magnitude, modern, to desire, to supply, apparatus, to use, sphere, usually, speed.