Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 261
y greater; but this wxmld requirethe tube containing the eye lens to be drawn out to ob-tain distinct vision, and to an extent much beyond thelimits of convenience if the object were very near. Thisdifficulty is avoided by increasing the power of the ob-ject lens, as is obvious from Equation (54);… … same in principle pound microscope not differing in principle from the as refracting i_ -i ., . p . I r teiescopo; telescope, its magnifying power is given by the Equa- Its magnifyingpower; tion, 4 = -11 = A m m r and substituting for -_ its value in Equation (40).have we Same in adifferent form; A…
Mechanics · Acoustics · Optics
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
