Licence: Attribution 4.0 International (CC BY 4.0)
Credit: A compound achromatic microscope of 1857 by Smith and Beck. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: A compound achromatic microscope of 1857 by Smith and Beck. Wellcome Collection. Source: Wellcome Collection.