 In the case of an ordinary gaslight the best experiments show that not more than one or two per cent of the radiant energy consists of visible rays, the rest is either invisible heat or actinism ; that is to say, over ninetyeight per cent of the gas is...  Scientific Opinion - Page 1051870Full view - About this book
 | 1870 - 934 pages
...is quite different with our artificial methods of illumination. In the case of an ordinary gas light the best experiments show that not more than one or...cent, of the gas is wasted in producing rays that do Hot help in making objects visible. — CA YOUNG. DKATII OF BP WALSH. — We regret to record the death... | |
 | 1870 - 586 pages
...the Fire-fly is wasted. It is quite different with artificial methods of illumination. In tho case of an ordinary gaslight the best experiments show that not more than ono or two per cent, of the radiant energy consists of visible rays ; the rest is either invisible... | |
 | 1876 - 510 pages
...fire-fly is wasted. It is quite different with our artificial methods of illumination. In the case of an ordinary gaslight the best experiments show...rest is either invisible heat or actinism ; that is iu say, over ninetyeight per cent of the gas is wasted in producing rays that do not help in making... | |
 | 1890 - 1160 pages
...artificial methods of illumination. In the case of an ordinary gas light, experiments show that at most, one per cent of the radiant energy consists of visible rays, the rest being invisible heat ; that is to say over ninety-nine per cent of the gas is wasted in producing rays... | |
 | New York Entomological Society - 1895 - 512 pages
...is quite different with our artificial methods of illumination. In the case of an ordinary gas light the best experiments show that not more than one or...invisible heat or actinism ; that is to say, over 98 per cent, of the gas is wasted in producing rays that do not help in making objects visible." (Amer.... | |
 | Marine Biological Laboratory (Woods Hole, Mass.) - 1896 - 202 pages
...fire-fly is wasted. It is quite different with our artificial methods of illumination. In the case of an ordinary gaslight the best experiments show...rest is either invisible heat or actinism ; that is ti> say, over ninetyeight per cent of the gas is wasted in producing rays that do not help in making... | |
 | Shôzaburô Watasé - 1896 - 26 pages
...fire-fly is wasted. It is quite different with our artificial methods of illumination. In the case of an ordinary gaslight the best experiments show...the rest is either invisible heat or actinism ; that 1s to say, over ninetyeight per cent of the gas is wasted in producing rays that do not help in making... | |
 | Marine Biological Laboratory (Woods Hole, Mass.) - 1896 - 202 pages
...fire-fly is wasted. It is quite different with our artificial methods of illumination. In the case of an ordinary gaslight the best experiments show...the rest is either invisible heat or actinism ; that 1s to say, over ninetyeight per cent of the gas is wasted in producing rays that do not help in making... | |
 | Alpheus Spring Packard - 1898 - 772 pages
...the fire is wasted. It is quite different with our artificial methods of illumination. In the case of an ordinary gaslight the best experiments show...invisible heat or actinism ; that is to say, over 98 per cent of the gas is wasted in producing rays that do not help in making objects visible." Panceri... | |
 | Alpheus Spring Packard - 1898 - 766 pages
...the tire is wasted. It is quite different with our artificial methods of illumination. In the case of an ordinary gaslight the best experiments show...per cent of the radiant energy consists of visible ray*; the rest is either invisible heat or actinism ; that is to say, over 98 per cent of the gas is... | |
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