Albert Einstein in discussion with ‘Zwei-Stein’ v/@phalpern Zwei-Stein (signifying ‘second Einstein’) was one of physicist Wolfgang Pauli’s more flattering nicknames.

Albert Einstein in discussion with ‘Zwei-Stein’ v/@phalpern.

Zwei-Stein (signifying ‘second Einstein’) was one of physicist Wolfgang Pauli’s more flattering nicknames photo credit: Paul Ehrenfest.

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Date: Autumn 1926