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THE article headed “Television” which appeared in NATURE of Jan. 15, contains the following statement: “a difference of phase of only one degree is capable of spoiling definition.” Were this statement true, my television system, depending as it does on synchronism, would certainly, as the writer states, be faced with a very serious barrier. It is, however, a misstatement of fact. Phase difference between receiver and transmitter has no effect whatever upon definition, the whole effect being a displacement of the image as a whole.

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BAIRD, J. Television. Nature 119, 161–162 (1927).

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