Talk:Timeline of states of matter and phase transitions

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Copyright Permission to modify and distribute this and other timelines originally developed by Niel Brandt have been granted to wikipedia. See Talk:Timeline of transportation technology

Onsager's solution of the 2D Ising model was actually published in 1949 in a joint paper with Kaufmann. In 1944 Onsager published just one paragraph with the answer. I am not sure that this has to be mentioned in the article.

I thought that Ising did not use the Ising model to describe magnetic systems. What is the source of the information about his application of the Ising model to magnetism?