Science Art: Text-fig. 5. – Model of electron paths, 1946

Ockenden_ModelElectronPaths1946
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It looks like a wrought-iron finial for a curtain rod. It’s actually a demonstration of how electrons can be used as a lens – how an electron microscope make such small things visible.

Found in Introduction to the Electron Microscope by F.E.J. Ockenden, 1946.

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