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" ... of the main plate of the spectroscope, which is slotted to allow it to pass through. On moving the central pivot the whole of the prisms are moved, each to a different amount in proportion to its distance in the train from the first or fixed prism,... "
How to work with the spectroscope - Page 14
by John Browning (F.R.A.S.) - 1878 - 66 pages
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Monthly Notices of the Royal Astronomical Society, Volume 30

1870
...prisms are brought into a circle. This central pivot is attached to a dovetailed piece of two or three inches in length, placed on the under side of the...stationary, and the second prism to have been moved through i° by this arrangement ; then the third prism will have been moved through 2°, the fourth through...
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Quarterly Journal of Science, and Annals of Mining, Metallurgy ..., Volume 8

James Samuelson, William Crookes - 1871 - 614 pages
...central pivot is attached to a dovetail piece of two or three inches in length, placed on the under-side of the main plate of the spectroscope ; which is slotted...collimator, c. Thus, supposing the first prism of the train opposite c, represented in the diagram, to be stationary, and the second prism to have been moved through...
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The Quarterly Journal of Science, Volume 8

1871 - 600 pages
...through. On moving the central pivot, the whole of the prisms are moved, each to a different amoiint in proportion to its distance in the train from the...collimator, c. Thus, supposing the first prism of the train opposite c, represented in the diagram, to be stationary, and the second prism to have been moved through...
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Report of the ... Meeting of the British Association for the ..., Volume 40

British Association for the Advancement of Science - 1871 - 720 pages
...prisms are шо"'each to a different amount, in proportion to its distance in the train from ih< c"; or fixed prism, on which the light from the slit falls after passing through the wllimator C. Thus, supposing * the first prism of the train from C, represent*! in ^ diagram, to be...
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Journal of the Franklin Institute

1871 - 642 pages
...central pivot is attached to a dovetail piece of two or three inches in length. placed on the under-side of the main plate of the spectroscope ; which is slotted...collimator, c. Thus, supposing the first prism of the train opposite c, represented in the diagram, to be stationary, and the second prism to have been moved through...
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