Motion picture projection : an elementary text book (1928)

Record Details:

Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

858 MOTION PICTURE PROJECTION thereby closing the circuit through the positive feed magnet. (See wiring diagram page 847.) By reason of its proximity to and frequent contact with the flame it is constantly being consumed and will have to be replaced. We estimate that the life of one of these electrodes on a lamp using 115 Amps, should be above six weeks.