Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
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In our eReader you can find the full English version of the book. Read Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
In our eReader you can find the full English version of the book. Read Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
What reading level is Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine book?
To quickly assess the difficulty of the text, read a short excerpt:
It is necessary to find out by experiment.
Precautions in making polarity tests. — If possible, have a rheo- stat in the circuit before making the tests. One of the small rheostats for use with the small current arc lamp can be very easily introduced into the circuit (see fig. i88, 270 for wiring). If an adjustable rheostat is already in the circuit, set it for the least current.
In making the tests never allow two naked wires to come in contact for that would complete the circuit and might bum... out a fuse or do something worse.
Never use a piece of metal, or a metal dish for holding the testing materials. Always use glass, porcelain or wood or some other non-conducting material. The tests are perfectly definite and safe if applied with due care.
Remember also that when repair work on the line is done, the polarity of the supply wires may be changed. This would of course change the polarity of the arc lamp and a good light could not be obtained. One must be on the lookout for every possible trouble and have the knowledge and the resourcefulness to make the neces- sary modifications.
What to read after Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine?
You can find similar books in the "Read Also" column, or choose other free books by Simon Henry Gage to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is necessary to find out by experiment.
Precautions in making polarity tests. — If possible, have a rheo- stat in the circuit before making the tests. One of the small rheostats for use with the small current arc lamp can be very easily introduced into the circuit (see fig. i88, 270 for wiring). If an adjustable rheostat is already in the circuit, set it for the least current.
In making the tests never allow two naked wires to come in contact for that would complete the circuit and might bum... out a fuse or do something worse.
Never use a piece of metal, or a metal dish for holding the testing materials. Always use glass, porcelain or wood or some other non-conducting material. The tests are perfectly definite and safe if applied with due care.
Remember also that when repair work on the line is done, the polarity of the supply wires may be changed. This would of course change the polarity of the arc lamp and a good light could not be obtained. One must be on the lookout for every possible trouble and have the knowledge and the resourcefulness to make the neces- sary modifications.
What to read after Optic Projection, Principles, Installation, And Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine?
You can find similar books in the "Read Also" column, or choose other free books by Simon Henry Gage to read onlineMoreLess
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