Bauhaus-Universität Weimar

Optic Projection: Principles, Installation and Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
Gage, Henry Simon and Henry Phelps Gage
1. Wire for the Mazda lamp 
exactly as for any incandescent 
bulb lamp. 
2. Turn the lamp on and off 
by the key switch as for any 
incandescent lamp. 
3. As this light is relatively 
dim, make the room dark and 
project a small picture. 
It is also wise to have one or 
more extra bulbs in case one 
bums out. 
4. Turn the lamp on and off 
whenever desired as it gives full 
brilliancy in an instant. 
1. Find out the kind of cur¬ 
rent and the voltage wherever a 
Nemst lamp is to be used. 
2. Purchase a Nemst lamp 
adapted to the current with 
which it must be used. 
3. A special rheostat or bal¬ 
last forms a part of every 
Nemst lamp for projection. 
Do Not 
1. Do not use a rheostat with 
a Mazda lamp. 
2. Do not take any more 
trouble with the concentrated 
filament Mazda than for any 
bulb lamp. 
3. Do not try to make too 
large a screen picture; and do 
not have the room as light as 
for the arc lamp. 
4. Do not let the lamp bum 
all the time during an inter¬ 
mittent exhibition any more 
than with the arc lamp. 
Do Not 
1. Do not use a Nemst lamp 
with a current and voltage for 
which it was not constructed. 
2. Do not purchase a Nemst 
lamp for direct current if it 
must be used on an alternating 
current line. 
3. Do not insert a separate 
rheostat in the wiring for a 
Nemst lamp.


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