Crookes' vis generatrix
Model of Crookes’ vis generatrix of 1898, built by his assistant, Gardiner. From: Proc. R. Soc. Lond. 63, 408.
The vertical scale represents the atomic weight of the elements from H = 1 to Ur = 239.
Missing elements are represented by a white circle. Similar elements appear underneath each other:
|Periodic Table, What is it showing?||
© Mark R. Leach 1999-
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