Philosophical MagazineTaylor & Francis, 1804 - Physics |
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Page 239
... plane ones , while it does not appear that Archimedes used the one rather than the other ; yet we have at least as good a right to say , that his mirrors were plane , as that they were concave . A machine is more simple and more easily ...
... plane ones , while it does not appear that Archimedes used the one rather than the other ; yet we have at least as good a right to say , that his mirrors were plane , as that they were concave . A machine is more simple and more easily ...
Page 244
... plane ; but I have met with more than one supposed plane mirror , which were not only concave , but of a tolerably regular concavity ; so that when , from a considerable distance , I viewed remote objects in them , I saw those objects ...
... plane ; but I have met with more than one supposed plane mirror , which were not only concave , but of a tolerably regular concavity ; so that when , from a considerable distance , I viewed remote objects in them , I saw those objects ...
Page 318
... plane of the ecliptic ; the sun's parallax being so very small as not sensibly to alter the case . For the same reason the plane of the ecliptic may then be regarded as cutting the image at right angles and centrically . The diameter of ...
... plane of the ecliptic ; the sun's parallax being so very small as not sensibly to alter the case . For the same reason the plane of the ecliptic may then be regarded as cutting the image at right angles and centrically . The diameter of ...
Contents
OF | 3 |
History of Astronomy for the Year 1803 Read at | 10 |
Gerions Errors | 14 |
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