 | James Ferguson - Astronomy - 1776 - 546 pages
...glafs, may be made to converge and unite in as many points between g and b, where the image of the object will be formed : which image is viewed by the eye through the eyeglals e /. For the eye-glafs being fo placed, that the image gb may be in its focus, and the eye... | |
 | James Ferguson - Astronomy - 1790 - 548 pages
...glafs, may be made to converge and unite in as many points between g and b, where the image of the object will be formed: which image is viewed by the eye through the eyeglafs e f. For the eye glafs being fo placed, that the image gb may be in its focus, and the eye... | |
 | John Imison - 1796 - 476 pages
...may be made to converge and unite in as many points between g and h, where the image of the objeft will be formed : which image is viewed by the eye through the eye-glafs e f. For the eye-glafs being fo placed, that the image gh may be in its focus, and the eye... | |
 | James Ferguson, Sir David Brewster - Astronomy - 1806 - 506 pages
...glass, may be made to converge and unite in as many points between g and A, where the image of the object will be formed; which image is viewed by the...For the eye-glass being so placed, that the image g A may be in its focus, 1 and the ii i • 1-1 i i- i i- aieruaft. 9 This distance varies in different... | |
 | Sir Richard Phillips - Electricity - 1807 - 212 pages
...h. The image, therefore, and not the object, is viewed by the eye DE, through the tens ef, which is so placed that the image gh may be in its focus, and the eye about the same distance on the other side; the rays of each pencil will be parallel after goingout... | |
 | Encyclopaedia Perthensis - 1807 - 792 pages
...glafs, may be made to converge, anil unite in as many points between £ and />, where the image of the object will be formed : which image is viewed by the eye through the eye-glafs ef. For the eye-glau btin'g fo placed, that the image gh may be in its focus, and the eye... | |
 | Edward Augustus Kendall - Encyclopedias and dictionaries - 1811 - 516 pages
...eye DE, through the lens ef, which is so placed that the image gA may be in its focus, and the eye about the same distance on the other side; the rays...each pencil will be parallel after going out of the eye-glass as at e audy, till they come to the eye at k, where they will begin to converge by the refractive... | |
 | James Ferguson - Astronomy - 1814 - 420 pages
...glass, may be made to converge and ».-ate in as many points between g and h, where the image of the object will be formed ; which image is viewed by the...For the eye-glass being so placed, that the image gli may be .in its focus,* and the eye much about the same distance on the other side, the rays of... | |
 | James Smith - Industrial arts - 1815 - 684 pages
...r. The eye-glass, DEF, is so placed, that its focus is at B, and the eye, to view the image, must be about the same distance on the other side. The rays...each pencil will be parallel after going out of the eye-glass, but they will be again converged by the refractive powers of the eye, and will form on the... | |
 | William Shepherd, Jeremiah Joyce, Lant Carpenter - Education - 1815 - 598 pages
...which is so placed that the image g It may be in the focus, and the eye at about an equal distance OH the other side: the rays of each pencil will be parallel after OPTICS. 69 going out of the eye-glass, as at e and/, till they come to the eye at k; by the humours... | |
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object will be formed: which image is viewed by the eye through the eye-glass ef. For the eye-glass being so placed, that the image gh may be in its focus, and the eye much about the same distance on the other side, the rays of each pencil will be parallel,... 
