Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 286
power of this condenser is low, and its aperture is very large(1*36); hence beyond the fact that it is not achromatised it hasenormous spherical aberration. Thedistance between the foci of the centralportion and of a narrow annular zonewhose internal diameter is |-th-inch is^10th-inch. Its… … Fig. 207.—Optical arrangementof Abbes chromatic condenser.
Microscopy
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