Philosophical MagazineTaylor & Francis, 1807 - Physics |
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Page 342
First Observation . If we look attentively at a remote object , which subtends a very small angle at the eye , that object will be seen more distinctly than any other object that may be near it ; because those rays that enter the eye ...
First Observation . If we look attentively at a remote object , which subtends a very small angle at the eye , that object will be seen more distinctly than any other object that may be near it ; because those rays that enter the eye ...
Page 343
... object glass to two inches , I drew out the inner tube until the picture of remote objects was distinctly painted upon the rough glass , but near ob- jects were represented imperfectly . Second Experiment . When I had contracted the ...
... object glass to two inches , I drew out the inner tube until the picture of remote objects was distinctly painted upon the rough glass , but near ob- jects were represented imperfectly . Second Experiment . When I had contracted the ...
Page 344
... object , in a line between the remote object and the eye , at the distance of five or six inches from it , and these two objects will appear as distinct when seen together as when they are viewed separately ; but the moment the aperture ...
... object , in a line between the remote object and the eye , at the distance of five or six inches from it , and these two objects will appear as distinct when seen together as when they are viewed separately ; but the moment the aperture ...
Contents
CONTENTS | 3 |
1542 | 5 |
Summary Considerations upon variegated Colours | 11 |
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