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" OPQR, so disposed, that they may each make an angle of 45 degrees, that is, that they may be half way inclined from the perpendicular, as in the figure. In each of the two extremities AB, make a circular overture, in one of which fix the tube GL, in the... "
The new encyclopædia; or, Universal dictionary ofarts and sciences - Page 130
by Encyclopaedia Perthensis - 1807
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Experiments in optics, chromatics and acoustics

William Hooper - Playing cards - 1774 - 344 pages
...from the perpendicular, as in the figure. In each of the two extremities AB, make a circular overture, in one of which fix the tube GL, in the other the tube MF, and obferve that in each of thefe is to be inferted another tube, as H and I *. Furnifh the firft of thefe...
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Rational Recreations: In which the Principles of Numbers and ..., Volume 2

William Hooper (M.D.) - Card games - 1782 - 344 pages
...from the perpendicular, as in the figure. In each of the two extremities AB, make a circular overture, in one of which fix the tube GL, in the other the tube MF, and obferve that in each of thefe is to be inferted another tube, as H and I*. Furnifh the firft of thefe...
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Encyclopædia Britannica: Or, A Dictionary of Arts ..., Volume 4, Part 1

Colin Macfarquhar, George Gleig - Encyclopedias and dictionaries - 1797 - 454 pages
...astranr,,arcn> in the figure. In each of the two extremities AB, fig. n. make a circular overture, in one of which fix the tube GL, in the other the tube MF, and obferve that in each of thefe is to be inferted another tube, аз H and I (A). l'"arni!h the firft...
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Encyclopaedia Perthensis; Or Universal Dictionary of the Arts ..., Volume 5

Encyclopedias and dictionaries - 1816 - 844 pages
...degrees; that is, that they may be half way inclined from the perpendicular, as in the figure. In each of the two extremities AB, make a circular aperture, in one of which fix the tube, GL, in the other the tjbe MF, and obferve that in each of thefe is tobe inferted another tube, as H and I. (53.) Thefe 4...
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Endless Amusement: A Collection of Nearly 400 Entertaining Experiments in ...

Fireworks - 1839 - 230 pages
...from the perpendicular, as in the figure. In each of the two extremities AB, make a circular overture, in one of which fix the tube GL, in the other the tube MF, and observe, that in each of these is to be inserted another tube as, H and I. [Observe. These four tubes...
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Endless amusement; a collection of entertaining experiments in various ...

Endless amusement - Fireworks - 1820 - 232 pages
...the perpendicular, as in the figure. In each of the two extremities A 15, make a circular overture, in one of which fix the tube GL, in the other the tube MF, and observe, that in each of these is to be inserted another tube as H and I. [Observe. These four tubes...
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