Micrographia : containing practical essays on reflecting, solar, oxy-hydrogen gas microscopes; micrometers; eye-pieces, &c. &c. (1837)
Goring, C. R., 1792-1840, Pritchard, Andrew, 1804-1882, joint author · London : Whitaker and Co. · leaf 206
es; or even,in some cases, Sir D. Brewsters polygonal lenses might be serviceable,, SOLAR AND GAS MICROSCOPES. 193 concave reflector properly constructed be used without anylenses, the result will be quite equal, if not superior, to that ob-tained by the preceding management, and at the same time… … B the object: a field lens, F, is introduced in the diagram,and might be useful in some cases. In gas microscopes constructed as above, with only areflector for illumination, on removing the magnifiers in frontthe illuminated portion of the screen will not be a completecircle, the lime, jets,…
Microscopy
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