Essays and addresses / by professors and lectures of the Owens College, Manchester.

Date:
1874
Catalogue details

Licence: Public Domain Mark

Credit: Essays and addresses / by professors and lectures of the Owens College, Manchester. Source: Wellcome Collection.

    102/584 page 81
    III.] SOLAÄ PHYSICS. 81 can we not disperse it ? Comparing these red flames to the sand, and the glare to the sugar, can we not disperse the glare by a method similar to that by which hot water gets rid of the sugar ? 25. This was accomplished, I may say, simultane¬ ously and independently by Janssen in France, and Lockyer in this country. It was found that, by means of the spectroscope, we can dilute and scatter the glare while the light from the red flames remains undiluted, and thus becomes visible. The light from the glare is ordinary sun-light, and embraces all sorts of rays, and these are separated from one another and scattered ; while that from the red flames consists only of a very few sorts of light which are, therefore, not so scattered. 26. These red flames, when viewed by the spectro¬ scope, frequently present a most gorgeous appearance.
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