ilm
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45:54Celestial Navigation (instruction video)
190K views • 10 years ago
NathanielsCAD
A roughly 45-minute vintage US military instructional film that gives a comprehensive overview of celestial navigation, covering sextant use and the theory behind lines of position.
30:15Antique 4x5 camera creates 20 micron photolithography masks: Super tiny tax form
429K views • 6 years ago
Applied Science
Ben Krasnow of Applied Science uses an antique 4x5 view camera to make high-resolution photolithography masks in a home shop. He photographs a poster-sized printout onto litho film to get features around 20 microns.