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For more than 400 years, researchers have been using microscopes to penetrate ever deeper into the micro and nano world. Starting with the first light microscope, which was invented around 1600, through the fluorescence microscope to the electron and STED microscope, the optical instruments make ever finer details of the animate and inanimate world visible. Material for school: Techmax 15: Beyond the Abbe limit (STED microscopy) https://www.max-wissen.de/max-hefte/t...