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CHAPTER VII
FORM—Continued. LIGHT ECONOMIZED BY RIGHTLY SHAPED GLASS. HEAT SAVED BY WELL DESIGNED CONVEYORS AND RADIATORS
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Why rough glass may be better than smooth … Light is directed in useful paths by prisms … The magic of total reflection is turned to account … Holophane globes … Prisms in binocular glasses … Lens grinding … Radiation of heat promoted or prevented at will.
