Practical Television
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In our eReader you can find the full English version of the book. Read Practical Television 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 Practical Television
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" Carey, an American, in the previous year had also brought out apparatus of the multiple wire type (Fig. 1 5), with the 44 PRACTICAL TELEVISION Selenium cell arrangement at the transmitting end and an incandescent receiver containing carbon or platinum elements (see Sci, Am. , Vol. 40, page 309, 1879).
Shelford Bidwell, an experimenter on the properties of Selenium, in 1 8 8 1 showed how that element could be applied in improving the Photophone and in telephotography. He contributed an account... of " Practical Telephotography " in Nature in 1907 (see Vol. 76, page 444).
Wireless Photography.
A gap occurs until more recent times, probably owing to the disappointing results experienced with Selenium in television pure and simple as apart from picture photography. It is noteworthy that in 1908 Knudsen made the first practical step towards the transmission of photographs by wireless.
De Bernouchi, of Turin, also had previously devised a system for this purpose. He employed a method whereby the intensity of a beam of light was varied by passing it through a photographic film on to a Selenium cell, the resistance of the latter varying at each instant accordingly (Fig.
What to read after Practical Television?
You can find similar books in the "Read Also" column, or choose other free books by Edgar Thomas Larner to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
" Carey, an American, in the previous year had also brought out apparatus of the multiple wire type (Fig. 1 5), with the 44 PRACTICAL TELEVISION Selenium cell arrangement at the transmitting end and an incandescent receiver containing carbon or platinum elements (see Sci, Am. , Vol. 40, page 309, 1879).
Shelford Bidwell, an experimenter on the properties of Selenium, in 1 8 8 1 showed how that element could be applied in improving the Photophone and in telephotography. He contributed an account... of " Practical Telephotography " in Nature in 1907 (see Vol. 76, page 444).
Wireless Photography.
A gap occurs until more recent times, probably owing to the disappointing results experienced with Selenium in television pure and simple as apart from picture photography. It is noteworthy that in 1908 Knudsen made the first practical step towards the transmission of photographs by wireless.
De Bernouchi, of Turin, also had previously devised a system for this purpose. He employed a method whereby the intensity of a beam of light was varied by passing it through a photographic film on to a Selenium cell, the resistance of the latter varying at each instant accordingly (Fig.
What to read after Practical Television?
You can find similar books in the "Read Also" column, or choose other free books by Edgar Thomas Larner to read onlineMoreLess
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