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Welcome to Interact, where you can tell us what you think.

Rate these Physics to Go featured images! If you like these, grab some more!


photo credit: Philip Greenspun; image source

Sand Dunes

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photo credit: Michael Connelley; image source

Atmospheric Optics: Rays and Shadows

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Rate these Quotations by Famous Physicists

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"Who ordered that?" - I.I. Rabi expressing dismay at the identification of the muon, a hard-to-account-for particle whose mass is 207 times the mass of the electron.

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"If I were forced to sum up in one sentence what the Copenhagen interpretation says to me, it would be 'Shut up and calculate!'" - David Mermin (also attributed to Richard Feynman)

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Which physics relationship is more important?

How Earth's magnetic field protects us from the solar wind, the stream of charged particles emanating from the sun. (In fact, a strong solar flare during the Apollo mission could have proved fatal to the astronauts.)
How the binding energy per nucleon depends on atomic weight (makes possible fusion--that's what happens in the sun--and also fission).



Which unanswered question in physics is more important?

Can string theory be tested experimentally?
Must the properties of the universe enable us to evolve to observe it? (This idea is called the anthropic principle.)


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