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tttabata

Jan 11, 20222 min read

I Belatedly Had a Topic to Discuss with Feynman

On January 19, 2011, I found an online article about Feynman [Ref. 1]. In the beginning, it reads: Caltech hosted its first-ever TED-X...

tttabata

Jan 4, 20221 min read

The Unit “Dirac”

About twenty years ago, I asked one of my colleagues what was the unit “Dirac” for. He, a competent physicist, thought about it for a...

tttabata

Dec 25, 20213 min read

Top Ten Physicists

I saw the results of two polls about the top-ten physicists in history. Can you guess the names in the lists? Was Richard Feynman on the...

tttabata

Dec 14, 20213 min read

Galison’s Comparison between Feynman and Einstein

A collection of the letters of the Nobel-prize-winning physicist Richard Feynman, edited by his daughter, Michelle Feynman, appeared in...