8:35pm PDT - June 30th, 2021
RT @PhysInHistory: Physics Photo Of the Day: Dr. Willem de Sitter and Albert Einstein discussing equations that provide the best available…
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मुकेश भल्ला (@MUKESHBHALLA8)
8:35pm PDT - June 30th, 2021
मुकेश भल्ला (@MUKESHBHALLA8)