File:Optic Projection fig 77.jpg

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caption: "Fig. 77. One-Mirror Heliostat of s'Gravesande. (From his: Elementa Mathematica Physices, Tomus II, Tabula LXXXIII). This picture is a facsimile except that the clock-shaft has been extended above and below.
B B Base of the mirror support with leveling screws.
P Hollow cylinder in which the mirror support C can rotate.
C The pillar with mirror fork at the upper end.
S Plane mirror.
D E Shaft at right angles to the mirror and extending to the fork at the end of the clock-hand (N O).
L L M Foot of the support for the clock-work.

I I I The leveling screws of the support."
Date
Source

Optic Projection: Principles, Installation and Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine, by Simon Henry Gage and Henry Phelps Gage, Ph.D. Ithaca, New York, Comstock Publishing Company. 1914. page 146.

scanned by User:Davepape
Author Willem 's Gravesande
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(Reusing this file)		 PD-US

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current06:43, 9 February 2008Thumbnail for version as of 06:43, 9 February 20082,151 × 2,706 (540 KB)DavepapeBot (talk | contribs)==Summary== {{Information |Description=caption: "Fig. 77. One-Mirror Heliostat of s'Gravesande. (From his: Elementa Mathematica Physices, Tomus II, Tabula LXXXIII). This picture is a facsimile except that the clock-shaft has been extended above and bel

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