 | Robert Alfred Herman - Geometrical optics - 1900 - 366 pages
...the angle which it appears to subtend at the eye will depend on the positions of both eye and object. The distance from the eye at which the object must...when viewed directly, that it appears to subtend when seen through the instrument is called its apparent distance. The angular magnification of any object... | |
 | Physics - 1902 - 408 pages
...us, this method is implicitly contained in Cotes' theorem (1738) of the apparent distance, ;'. e., the distance from the eye at which the object must be placed when viewed directly, in order to subtend the angle which it appears to subtend when seen through the... | |
 | Physics - 1902 - 518 pages
...us, this method is implicitly contained in Cotes' theorem (1738) of the apparent distance, /'. e., the distance from the eye at which the object must be placed when viewed directly, in order to subtend the angle which it appears to subtend when seen through the... | |
 | Edinburgh Mathematical Society - Electronic journals - 1906 - 494 pages
...y„; making after these refractions angles a,, ..., a„ with the axis. Here we may give the formula1, the brevity and similarity of which are the excuse...through the instrument." Apparent distance of P from Q = 4(1 + AKAXl + АЛА,) ... (1 + АЛА.)* or say QUE where II stands for a product of factors of... | |
 | 368 pages
...the angle which it appears to subtend at the eye will depend on the positions of both eye and object. The distance from the eye at which the object must...when viewed directly, that it appears to subtend when seen through the instrument is called its apparent distance. The angular magnification of any object... | |
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The distance from the eye at which the object must be placed to subtend the same angle, when viewed directly, that it appears to subtend when seen through the instrument is called its apparent distance. 