Repertory of Arts, Manufactures, and Agriculture: Consisting of Original Communications, Specifications of Patent Inventions ..., Band 3G. and T. Wilkie, 1844 |
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Seite 66
... plane perpendicular to the plane , a , c , b . If the reflecting plane bisect the angle , a , c , b , an observer , looking in the direc- tion , d , c , will see one star and the reflected image of the other , as if they were both at a ...
... plane perpendicular to the plane , a , c , b . If the reflecting plane bisect the angle , a , c , b , an observer , looking in the direc- tion , d , c , will see one star and the reflected image of the other , as if they were both at a ...
Seite 67
... plane , e , f , should be exactly perpen- dicular to the plane , a , b , c , at the time of the coinci- dence ; for if it be not so placed , the two images will not appear to move in the same path as indicated by the dotted line , fig ...
... plane , e , f , should be exactly perpen- dicular to the plane , a , b , c , at the time of the coinci- dence ; for if it be not so placed , the two images will not appear to move in the same path as indicated by the dotted line , fig ...
Seite 68
... plane , e , f , is also a plane of coincidence ; that is to say , if there be a distant object in that plane , rays of light proceeding from the object , and reflected by the plane , D , C , and rays reflected by both the planes , B , C ...
... plane , e , f , is also a plane of coincidence ; that is to say , if there be a distant object in that plane , rays of light proceeding from the object , and reflected by the plane , D , C , and rays reflected by both the planes , B , C ...
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