Abstract
IN the Engineering Supplement to the Siemens Magazine of June, Mr. A. Rosen describes the London television cable which joins the Alexandra Palace studio to Broadcasting House and goes thence to the Whitehall Telephone Exchange. Success is being achieved and provincial cities are looking forward to having broadcast television services. It is probable that eventually there will be a network of television cables interconnecting the studios and transmitters throughout the country, similar to the grid of the programme circuits which now exists for sound broadcasting. Television is analogous to telephony. In telephony the voice sounds are converted by the microphone into equivalent alternating currents ; these are transmitted to the receiving loud-speaker, where they are converted back to the voice sounds. Similarly the visual image is converted by the television camera into equivalent electric currents which are carried to the receiver where the cathode ray tube converts them back to the visual image. In both cases the transmission between sender and receiver can be effected over a metallic circuit, or by a radio link or by a combination of the two methods.
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The Television Cable. Nature 140, 355 (1937). https://doi.org/10.1038/140355a0
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DOI: https://doi.org/10.1038/140355a0