The Technical World Magazine, Volume 9Technical World Company, 1908 |
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Page 91
... PLATE , MAGNIFIED 360,000 TIMES . The white grains are violet , and the black ones red and green , the red a little darker than the green . -at least in colors , and the same process which produces the colors on glass is not available ...
... PLATE , MAGNIFIED 360,000 TIMES . The white grains are violet , and the black ones red and green , the red a little darker than the green . -at least in colors , and the same process which produces the colors on glass is not available ...
Page 92
... plate holder . It is backed up with a piece of black cardboard which serves the double function of cutting down re- flections from the plate holder , if any , and of protecting the emulsion from abrasion from the spring of the plate ...
... plate holder . It is backed up with a piece of black cardboard which serves the double function of cutting down re- flections from the plate holder , if any , and of protecting the emulsion from abrasion from the spring of the plate ...
Page 93
... plate shows a vio- let image formed of the violet starch grains , from in front of which the re- duced silver has been removed by the permanganate . The plate is then rede- veloped and all the silver of the black background , which wasn ...
... plate shows a vio- let image formed of the violet starch grains , from in front of which the re- duced silver has been removed by the permanganate . The plate is then rede- veloped and all the silver of the black background , which wasn ...
Contents
Testing Seeds for the Farm W | 11 |
TABLE | 13 |
First Balloon Flight Across Central Alps | 23 |
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acres American apparatus balloon boat brick building built cactus carried cent Chicago clock color construction cost Crater lake cylinder electric engine fact farm feet fire four frogs glass guayule heat horse horse-power hour Hudson Bay hundred ical Illinois rivers inches invention iron Knight's Key lake lamp land larvæ light liquid air machine magnet manufacture means meerschaum ment method miles minute motor operation ordinary pass Pennywise photograph pills pipe plant plate pounds pressure produced pump radium rail railroad railway river road Ruhla sand seed ship side slide rule speed station steam steel street supply surface tank TECHNICAL WORLD MAGAZINE telegraphy thousand tical tion tons track trains trees tube turn twenty UNDERWOOD & UNDERWOOD vessel waterway weight wheels wire wireless wireless telegraph York