Licence: Attribution 4.0 International (CC BY 4.0)
Credit: French achromatic microscope, circa 1850, by Nachet. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: French achromatic microscope, circa 1850, by Nachet. Wellcome Collection. Source: Wellcome Collection.