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Comment: Re:This again? (Score 3, Informative) 472

by ClickOnThis (#49598719) Attached to: New Test Supports NASA's Controversial EM Drive

Conservation of linear momentum is a mathematical consequence of translational symmetry - in other words, momentum is conserved if the laws of physics are invariant in space. Similarly, angular momentum is conserved if the laws of physics are invariant by rotation.

And energy is conserved if the system is invariant over a translation in time.

Hooray for Emmy Noether.

Comment: Re:This again? (Score 5, Insightful) 472

by ClickOnThis (#49596151) Attached to: New Test Supports NASA's Controversial EM Drive

This might be another Cold Fusion moment. Or, it might be the start of something very interesting.

When an experiment contradicts a theory, there are two possibilities: (1) there's something wrong with the experiment; or (2) there's something wrong with the theory. If the correct answer is (1), then it's par for the course: mistakes happen, and the process of science corrects them eventually. But if the correct answer is (2) then it's cork-popping time, because you have discovered new science.

Chairman of the Bored.

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