Philosophical MagazineTaylor & Francis, 1804 - Physics |
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Page 181
... object and the mirror , but so as not to intercept any of the rays . The mirror then should be so placed , that the in- cident rays coming from the object , and the rays reflected by the mirror to the eye , may make a small angle with ...
... object and the mirror , but so as not to intercept any of the rays . The mirror then should be so placed , that the in- cident rays coming from the object , and the rays reflected by the mirror to the eye , may make a small angle with ...
Page 186
... object - glass , distant ob- jects might be viewed , as with a telescope composed of se- veral glasses . I believe , however , that Tschirnhausen , when he published the properties of his large object - glass , had no knowledge of what ...
... object - glass , distant ob- jects might be viewed , as with a telescope composed of se- veral glasses . I believe , however , that Tschirnhausen , when he published the properties of his large object - glass , had no knowledge of what ...
Page 187
... objects which , with- out it , I could not see at all . 27. “ ( V. ) Through a single great object - glass , several persons may view different objects at the same instant . I have frequently observed that , in order to distinct vision ...
... objects which , with- out it , I could not see at all . 27. “ ( V. ) Through a single great object - glass , several persons may view different objects at the same instant . I have frequently observed that , in order to distinct vision ...
Contents
OF | 3 |
History of Astronomy for the Year 1803 Read at | 10 |
Gerions Errors | 14 |
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