Actina - The Portable Sun lamp. Produced by Perihel Ltd, London
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Actina - The Portable Sun lamp. Produced by Perihel Ltd, London. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Actina - The Portable Sun lamp. Produced by Perihel Ltd, London. Wellcome Collection. Source: Wellcome Collection.