Television Present Methods of Picture Transmission
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In our eReader you can find the full English version of the book. Read Television Present Methods of Picture Transmission Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Television Present Methods of Picture Transmission
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One even wonders whether it has not been credited w r ith superhuman intelligence when one finds that Dr. Phillip Thomas of the Westinghouse Co. Has devised a method of traffic control for outlying districts, the brains of which is a photoelectric cell!
CHAPTER VII GLOW LAMPS IN previous chapters, we have already learned the fundamentals of television. At the sending end it is neces- sary to convert varying light intensities into corresponding electrical variations; then to change the latter bi...ick to vary- ing light intensities at the receiving end. We must, then, have some device which reverses the action of the selenium or photoelectric cell. Electro-magnetic valves are perhaps the easiest to understand; but where the problem is one of transmitting an animated object the inertia of the moving parts of any such device make it impractical.
It is well known that the brightness of any electric lamp depends upon the current through the filament. Yet in the case of an incandescent lamp the heat is so great that as much as a tenth of a second may elapse before a decrease in current produces a corresponding drop in brightness.
What to read after Television Present Methods of Picture Transmission?
You can find similar books in the "Read Also" column, or choose other free books by Harold Horton Sheldon to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
One even wonders whether it has not been credited w r ith superhuman intelligence when one finds that Dr. Phillip Thomas of the Westinghouse Co. Has devised a method of traffic control for outlying districts, the brains of which is a photoelectric cell!
CHAPTER VII GLOW LAMPS IN previous chapters, we have already learned the fundamentals of television. At the sending end it is neces- sary to convert varying light intensities into corresponding electrical variations; then to change the latter bi...ick to vary- ing light intensities at the receiving end. We must, then, have some device which reverses the action of the selenium or photoelectric cell. Electro-magnetic valves are perhaps the easiest to understand; but where the problem is one of transmitting an animated object the inertia of the moving parts of any such device make it impractical.
It is well known that the brightness of any electric lamp depends upon the current through the filament. Yet in the case of an incandescent lamp the heat is so great that as much as a tenth of a second may elapse before a decrease in current produces a corresponding drop in brightness.
What to read after Television Present Methods of Picture Transmission?
You can find similar books in the "Read Also" column, or choose other free books by Harold Horton Sheldon to read onlineMoreLess
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