Chemical News and Journal of Industrial Science, Tomy 5-6Chemical news office., 1862 |
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Strona 77
... blue glass , you will have blue light upon the screen , together with the comparatively faint light from the gas lamps , and I venture to say that if Mr. Anderson places his arm across you will see the shadow of it is yellow . At the ...
... blue glass , you will have blue light upon the screen , together with the comparatively faint light from the gas lamps , and I venture to say that if Mr. Anderson places his arm across you will see the shadow of it is yellow . At the ...
Strona 221
... blue , so that you see that no more than one - third of the visible spectrum has as yet been mapped by Professor Kirchhoff . The rest will , no doubt , in time be done ; but all these lines which we notice on this diagram are con ...
... blue , so that you see that no more than one - third of the visible spectrum has as yet been mapped by Professor Kirchhoff . The rest will , no doubt , in time be done ; but all these lines which we notice on this diagram are con ...
Strona 13
... blue sky , and lest the imperfect transparency of his laboratory windows should diminish the brightness of his background , he makes the experiment in the open air . Again , I said that the spectator should stand " with his back to the ...
... blue sky , and lest the imperfect transparency of his laboratory windows should diminish the brightness of his background , he makes the experiment in the open air . Again , I said that the spectator should stand " with his back to the ...
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