diurnal motions - before film transparencies were around
My wife recently was given a wooden box containing 7 wood mounted, glass, hand painted, hand-cranked, geared, magic lantern slides depicting astronomical images for teaching purposes. Each slide was projected in a magic lantern projector. When the crank was turned the gear or gears moved the world or planets or the zodiac. I have placed examples of this in the following sequence of images. We have not been able to assign a date to these slides but they were popular in this form from 1860 to 1890's. Each slide has a hand printed address label of 197 State Street, presumably Chicago. To the best of my knowledge only one firm made scientific lantern slides of this type and that was in London beginning around 1870 through 1890.
diurnal motions - before film transparencies were around
My wife recently was given a wooden box containing 7 wood mounted, glass, hand painted, hand-cranked, geared, magic lantern slides depicting astronomical images for teaching purposes. Each slide was projected in a magic lantern projector. When the crank was turned the gear or gears moved the world or planets or the zodiac. I have placed examples of this in the following sequence of images. We have not been able to assign a date to these slides but they were popular in this form from 1860 to 1890's. Each slide has a hand printed address label of 197 State Street, presumably Chicago. To the best of my knowledge only one firm made scientific lantern slides of this type and that was in London beginning around 1870 through 1890.