 | Claudius Crozet - 1821 - 234 páginas
...generation may be reduced to a few elementary combinations. It is, indeed, easy to understand that every surface may be considered as made up of an infinite number of curves : if, then, the law which connects one of these curves to the next is given, the surface is... | |
 | Elroy McKendree Avery - 1878 - 480 páginas
...distance AF is the focal distance of the mirror ; the focal distance is, therefore, one-half the radius of curvature. The angle MCN is called the aperture...place in accordance with the principles laid down in § 591. It should be borne in mind that the radii drawn from C to points in the mirror as / and... | |
 | Alfred Payson Gage - 1882 - 446 páginas
...the center of curvature and the vertex is called the principal axis of the mirror. A concave mirror may be considered as made up of an infinite number of small plane surfaces. All radii of the mirror, as CA, CG, and CB, are perpendicular to the small planes which they strike.... | |
 | Alfred Payson Gage - 1888 - 380 páginas
...of curvature and the vertex is Fls- 258' called the principal axis of the mirror. A concave mirror may be considered as made up of an infinite number of small plane surfaces. All radii of the mirror, as CA, CG, and CB, are perpendicular to the small planes which they strike.... | |
 | Fred John Brockway - 1892 - 392 páginas
...is the aperture of the mirror. How to find the foci in spherical concave mirrors. A concave mirror may be considered as made up of an infinite number of small plane surfaces, and the radii of the sphere, CM or CB, are perpendicular to these surfaces. When the rays come from... | |
 | Alfred Payson Gage - 1895 - 668 páginas
...the center of curvature and the vertex is called the principal axis of the mirror. A concave mirror may be considered as made up of an infinite number of small plane surfaces. All radii of the mirror, as CA, CG, and CB, are perpendicular to the small planes which they strike.... | |
 | Charles Herbert Clark - 1896 - 296 páginas
...represents very well the principle of the double-convex lens. The surfaces of a double-convex lens may be considered as made up of an infinite number of small plane surfaces. Each ray of light coming from a given point, except the one passing along the optic axis BA, Fig. 7,... | |
 | Alfred Payson Gage - 1902 - 394 páginas
...center of the curvature and the vertex is called the principal axis of the mirror. A concave mirror may be considered as made up of an infinite number of small plane surfaces. All radii of the mirror, as CA, CG, and -D CB, are perpendicular to the small planes which they FIG... | |
 | Flavel Benjamin Tiffany - 1902 - 714 páginas
...mirror is called the principal axis of the mirror. Reflection from Concave Mirrors. — A concave mirror may be considered as made up of an infinite number of small plane surfaces. All radii of the mirror, as CK, CI, and CA (Fig. 8), axe perpendicular to the small planes which they... | |
 | Chales H. Clak - 2002 - 570 páginas
...represents very well the principle of the double-convex lens. The surfaces of a double-convex lens may be considered as made up of an infinite number of small plane surfaces. Each ray of light coming from a given point, except the one passing along the optic axis BA, Fig. 7,... | |
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Fls- 258' called the principal axis of the mirror. A concave mirror may be considered as made up of an infinite number of small plane surfaces. All radii of the mirror, as CA, CG, and CB, are perpendicular to the small planes which they strike. 