 | Jeremiah Joyce - 1809 - 290 páginas
...principal focus of which is at i K ; opposite to the hole p is a small mirror r, concave towards the great one ; it is fixed on a strong wire M, and may,...object; from which rays will flow to the great mirror oi: James. And I see you have taken only two rays of a pencil from the top, and two from the bottom.... | |
 | John Imison - 1822 - 528 páginas
...and so fixed to a strong wire M, that it may be moved farther from the great mirror, or nearer to it, by means of a long screw on the outside of the tube, keeping its axis still in the same line, P mn, with that of the great one. Now, since in viewing a... | |
 | James Ferguson - 1823 - 406 páginas
...and so fixed to a strong wire M, that it may be moved farther from the great mirror, or nearer to it by means of a long screw on the outside of the tube, keeping its axis still in the same line P mn with that of the great one. Now, since in viewing a very... | |
 | George G. Carey - 1825 - 274 páginas
...so fixed to a strong wire M, that it may ,be moved farther from the great mirror, or nearer to it, by means of a long screw on the outside of the tube, keeping its axis still in the same line P in n, with that of the great one. Now, since in viewing a... | |
 | Sir Daniel Keyte Sandford - 1837 - 528 páginas
...principal focus of which is at IK ; opposite to the hole P is a small mirror L, concave towards the great one ; it is fixed on a strong wire M, and may, by means of a long screw on i lie outside of the tube, In • made to move backwards or forwards. AB is a remote object, from which... | |
 | Jeremiah Joyce - 1838 - 398 páginas
...hackwards or forwards. a B is a remote ohject : from which ravs will flow to the great mirror o F. J. And 1 see you have taken only two rays of a pencil from the top, and two from the hottom. T. And in order to trace the progress of the reflections and refractions, the upper ones... | |
 | James Ferguson - 1839 - 554 páginas
...and so fixed to a strong wire M, that it may be moved farther from the great mirror, or nearer to it, by means of a long screw on the outside of the tube, keeping its axis still in the same line Pmn with that of the great one. — Now since, in viewing a... | |
 | Jeremiah Joyce - 1841 - 578 páginas
...principal focus of which is at i K ; opposite to the hole r is a small mirror L, concave towards the great one ; it is fixed on a strong wire M, and may, hy means of a long screw on the outside of the tube, be made to move backwards or forwards. AB is a... | |
 | Popular encyclopedia - 1846 - 1018 páginas
...principal focus of which is at IK ; opposite to the hole P is a small mirror L, concave towards the great one ; it is fixed on a strong wire M, and may,...from which rays will flow to the great mirror D F. And in order to trace Die progress of the reflections and refractions, the upper ones are represented... | |
 | Jeremiah Joyce - 1846 - 456 páginas
...principal focus of which is at IK ; opposite to the hole r is a small mirror L, concave towards the great one ; it is fixed on a strong wire M, and may,...from which rays will flow to the great mirror D F. /. And I see you have taken only two rays of a pencil from the top, and two from the bottom. T. And,... | |
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IK ; opposite to the hole r is a small mirror L, concave towards the great one ; it is fixed on a strong wire M, and may, by means of a long screw on the outside of the tube, be made to move backwards or forwards. AB is a remote object ; from which rays... 
