Dr Harvey Lemon, Curator of Physics at the Museum of Science and Industry explains to a 15 year old student how Northwestern Universitys new electron microscope works. It is capable of magnifying 22,000 times. Chicago, Illinois: January 21, 1947.
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1940s21947AdultAndBuildingBuildingConservatorCuratorCuratorDrHarveyIllinoisIndustryLemonMuseumMuseumNorthwesternOfOfPhysicsRecreationScienceStatesStudentUSAUnitedUniversityadultarchitecturechicagochildrencoatcommunicationeducationelectronexplaininggirlsguidancehistoricalhistorylearninglookingmaturematuremenmicroscopemicroscopepeoplepeopleshowingstandingtogethernesstwo