Interact

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

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Sand Dunes

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Image credit: Roger Tanner/Jack Kennedy/NOAO/AURA/NSF; (no larger image available)

Missions to Mars

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Rate these Quotations by Famous Physicists

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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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"Look here, I have succeeded at last in fetching some gold from the sun." - Gustav Kirchhoff



Which physics relationship is more important?

How the increase in temperature vs. depth for Earth (creates the "oil window"--7,500 feet to 15,000 feet--where dead organisms were cooked into oil).
How the absorption of infrared radiation by gases in Earth's atmosphere depends on wavelength; the resulting greenhouse effect provides us with temperatures that enable life to flourish.



Which unanswered question in physics is more important?

Do black holes evaporate? (as per Stephen Hawking's prediction)
Must the properties of the universe enable us to evolve to observe it? (This idea is called the anthropic principle.)


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