2 posts tagged with constants. (View popular tags)
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Scientists out there, what are the best physical constants or material properties to have memorized for back-of-the-envelope calculations? [more inside]
posted by SBMike
on Jul 17, 2007 -
25 answers
Is there any evidence that physical laws have changed, or could possibly change over time? For example, has the speed of light - since the beginning of the universe - been the same, and will it always remain the same into the future? [more inside]
posted by extrabox
on May 31, 2006 -
23 answers