⌂
⚲
?
✕︎
clip:198751
clip:198751
clip:198751
clip:198751
clip:198751
clip:198751
clip:198751
clip:198751
clip:198751
hi
{"x":0,"y":0} to {"x":0,"y":0}
Copyright © details on Wikimedia Commons.
Leiden University - Kamerlingh Onnes Laboratorium 7007.jpg
▦