Otto Lummer (foreground, left of center) and others on his 60th birthday | Niels Bohr Library & Archives
Länsstyrelsen i Jönköpings län - Kransar och girlanger av lummer är ett populärt inslag i julpyntet. Men visste du att alla arter av lummer är fridlysta i hela landet? Cypresslummer får du
![Photographic Optics. By Otto Lummer, Professor, Assistant in the Reichsanstalt, Berlin; translated by Professor S. P. Thompson, London, Macmillan & Co. | Science Photographic Optics. By Otto Lummer, Professor, Assistant in the Reichsanstalt, Berlin; translated by Professor S. P. Thompson, London, Macmillan & Co. | Science](https://www.science.org/cms/10.1126/science.13.326.505.a/asset/e86dd8f6-129c-4ee4-8b5d-49135ac47e36/assets/science.13.326.505.a.fp.png)