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HomeScience50, 100 & 150 Years Ago: March 2021

50, 100 & 150 Years Ago: March 2021

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Lethal gas fights crime, 1921; baby energy powers cleaning, 1871

1871: Patented washing machine, powered by an energetic child. Credit: Scientific American, Vol. XXIV, No. 10; March 4, 1871

This article was originally published with the title “50, 100 & 150 Years Ago” in Scientific American 324, 3, 74 (March 2021)

doi:10.1038/scientificamerican0321-74

ABOUT THE AUTHOR(S)

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Dan Schlenoff

    Dan Schlenoff is a contributing editor at Scientific American and has edited the 50, 100 and 150 Years Ago column for one seventh of the magazine’s history.

    Credit: Nick Higgins

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