Изображение:Kamerlingh portret.jpg

[edit] Summary

Heike Kamerlingh Onnes

source: http://www.kb.nl/hkc/nobel/onnes/onnes.html 
(cropped to 600×800)

Copyright is by Museum Boerhaave,
http://www.museumboerhaave.nl/contact/pers2a.html 
their website states '(vrij beschikbaar voor publicatie)'
='(freely available for publication)'

Moreover, Kamerlingh Onnes passed away in 1926, and even though the date is not mentioned on the website of the Royal Library we can be pretty sure that it is well before 1923, which makes it PD-US as well

[edit] Licensing

The copyright holder of this image allows anyone to use it for any purpose including unrestricted redistribution, commercial use, and modification. Note: If the image requires attribution, use {{Attribution}} instead If this is your own work, please consider using {{PD-self}} instead. العربية | Česky | Dansk | Deutsch | English | Esperanto | Español | فارسی | Français | Italiano | 日本語 | 한국어 | Kurdî / كوردي | Nederlands | Polski | Português | Русский | Svenska | Türkçe | 简体中文 | 正體中文 | 粵語 | +/-