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50, 100 & 150 Years Ago: January 2023

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1923, 3-D MOVIES: “Many attempts have been made to produce stereoscopic motion pictures that have a third dimension, depth. The latest attempt is a simple electrical device through which an audience member views the screen. In the device, a very light, thin aluminum plate spins continually at a high rate. The screen appears to vanish, while the characters move forward through the air to within close range.” Credit: Scientific American, Vol. 128, No. 1; January 1923

This article was originally published with the title “50, 100 & 150 Years Ago” in Scientific American 328, 1, 61 (January 2023)

doi:10.1038/scientificamerican0123-61

ABOUT THE AUTHOR(S)

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    Mark Fischetti is a senior editor at Scientific American. He covers all aspects of sustainability. Follow him on Twitter @markfischetti Credit: Nick Higgins

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