Wednesday, June 14, 2023

Demonstrating polymer entanglement

From Steve Spangler I learnt this "party trick" demonstration of how the polymer molecules (polyethylene) in a plastic bag are entangled with one another. 

I was not sure that it would work as easily as it did for him. But it did!




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A forgotten physicist: Amelia Frank (1906-1937)

In honour of International Women's Day, I bring to your attention a fascinating recent piece in The Conversation , Who was Amelia Frank?...