Bauhaus-Universität Weimar

Titel:
Optic Projection: Principles, Installation and Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
Person:
Gage, Henry Simon and Henry Phelps Gage
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39438/246/
238 MICRO-PROJECTION WITH DIRECT CURRENT [Ch. IX 
Fig. 133. Projection' Microscope with Amplifier. 
This picture shows the projection microscope arranged for use in a lecture 
room. 
Commencing at the left : 
The supply wires to the table switch. 
A The ammeter to indicate the amount of current. It is along one wire 
(in series). 
R The adjustable rheostat. It is along one wire. 
10-20 These figures indicate that the rheostat is adjustable; the lowest 
current allowed to flow being 10 amperes and the highest 20 amperes. The 
arrow indicates the direction to turn the knob to increase the current. 
The arc lamp in the lamp-house. This is the three-wire, automatic arc lamp 
of the Bausch & Lomb Optical Co. 
The wiring is shown to be : 
One wire from the negative pole of the switch to the pole for the lower carbon. 
One wire passes from the positive pole of the switch to the middle binding 
post of the motor mechanism of the automatic lamp. The current for the 
motor does not traverse the rheostat. 
One wire passes from the positive pole of the switch to the ammeter, to the 
rheostat and from the rheostat to the positive (+) binding screw of the arc 
lamp.
        

Nutzerhinweis

Sehr geehrte Benutzer,

aufgrund der aktuellen Entwicklungen in der Webtechnologie, die im Goobi viewer verwendet wird, unterstützt die Software den von Ihnen verwendeten Browser nicht mehr.

Bitte benutzen Sie einen der folgenden Browser, um diese Seite korrekt darstellen zu können.

Vielen Dank für Ihr Verständnis.