Duff, A. Wilmer (Alexander Wilmer), b. 1864, ed, Guthe, Karl Eugen, 1866-1915, Hallock, William, 1857-1913, Lewis, E. Percival (Exum Percival), 1863-1925, Goodspeed, Arthur W. (Arthur Willis), b. 1860, Carman, Albert Pruden, b. 1861, McClung, Robert Kenning, 1874- · Philadelphia, P. Blakiston's Son & Co · leaf 385
us of a hyperbo-loidal mirror will have a virtual focus at the conjugate focus ofthe mirror. If the source is at the focus of a paraboloidal mirror,the light will be reflected in a parallel beam; and parallel lightwill be brought without aberration to a real focus by such amirror. REFRACTION AND… … REFRACTION AND DISPERSION. 369 light waves are transmitted through ether interpenetrating thematter. It appears, however, that the velocity of the waves isaffected by the presence of matter, as shown below, and that inall cases more or less of the vibratory energy of the ether is com-municated to…
Physics
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
