Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 239
anoblique pencilthrough theoptical centre. wherein = —, as in article (62). ft § 66. If the image be formed by reflexion, m = — 1,and Equation (60) becomes /=- F. 1 + £±- cos 6 //>-* \ Image formo I - # ^0JV reflexion; / 230 NATURAL PHILOSOPHY. illustration; since for a concave re-flector, Fn… … { :<W f>Fl;f = Fl;ovf<F. Image of a rightline will be aconic section. „ , . t §67. By a process entirely similar to that of 8 63 and Relation between •/ x «/ v dimensions of §64, we shall find that the linear dimension of the 6b~ object and image. , b ject is to the corresponding dimension…
Mechanics · Acoustics · Optics
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