 ... passing through the middle of the prism from one end of it to the other end parallel to the edge of the refracting angle) was in this and the following experiments perpendicular to the incident rays. About this axis I turned the prism slowly, and...  A general view of the sciences and arts - Page 15by William Jillard Hort - 1822Full view - About this book
 | James Smith - 1815 - 684 pages
...rays. About this axis I turned the prism slowly, and saw the refracted light on the wall, or coloured image of the sun, first to descend, and then to ascend....descent and ascent, when the image seemed stationary, I stopped the prism, and fixed it in that posture. Then I let the refracted light fall perpendicularly... | |
 | Charles Frederick Partington - 1828 - 468 pages
...rays. About this axis I turned the prism slowly, and saw the refracted light on the wall, or coloured image of the sun, first to descend, and then to ascend....descent and ascent, when the image seemed stationary, I stopped the prism and fixed it in that posture. " Then I let the refracted light fall perpendicularly... | |
 | 1841 - 488 pages
...refracted light or coloured image of the sun on the wall, first to descend, and then to ascend. Uetween the descent and ascent, when the image seemed stationary, he stopped the prism, and fixed it in that posture. For in that position, the refractions of the light at Ihe two sides of the refracting angle... | |
 | 1838 - 1014 pages
...rays. About this axis I turned the prism slowly, and saw the refracted light on the wall, or coloured image of the sun, first to descend, and then to ascend....descent and ascent, when the image seemed stationary, I stopped the prism and fixed it in that posture. " Then I let the refracted light fall perpendicularly... | |
 | Henry Enfield Roscoe - 1870 - 514 pages
...rays. About this axis I turned the prism slowly, and saw the refracted light on the wall or coloured image of the sun first to descend, and then to ascend....descent and ascent when the image seemed stationary, I stopped the prism, and fixed it in that posture, that it should be moved no more. For in that posture... | |
 | sir Henry Enfield Roscoe - 1869 - 396 pages
...rays. About this axis I turned the prism slowly, and saw the refracted light on the wall or coloured image of the sun first to descend, and then to ascend....descent and ascent when the image seemed stationary, J stopped the prism, and fixed it in that posture, that it should be moved no more. For in that posture... | |
 | Henry E. Roscoe - 1869 - 372 pages
...rays. About this axis I turned the prism slowly, and saw the refracted light on the wall or coloured image of the sun first to descend, and then to ascend....descent and ascent when the image seemed stationary, I stopped the prism, and fixed it in that posture, that it should be moved no more. For in that posture... | |
 | Henry Enfield Roscoe - 1873 - 542 pages
...turned the prism slowly, and saw the refracted light on the wall or coloured image of the sun h'rst to descend, and then to ascend. Between the descent and ascent when the image seemed stationaiy, I stopped the prism and fixed it in that posture, that it should be moved no more. For... | |
 | Thomas Preston - 1890 - 494 pages
...rays. About this axis I turned the prism slowly, and saw the refracted light on the wall, or coloured image of the sun, first to descend and then to ascend....descent and ascent when the image seemed stationary, I stopped the prism and fixed it in that posture that it should be moved no more. For in that posture... | |
 | Thomas Preston - 1895 - 612 pages
...rays. About this axis I turned the prism slowly, and saw the refracted light on the wall, or coloured image of the sun, first to descend and then to ascend. Between the descent and ascent Minimum when the image seemed stationary, I stopped the prism and fixed devmtlonit in that posture... | |
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