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visits member for 2 years
seen Oct 12 '13 at 12:46

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Oct
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comment Finite or ∞ set of masses & ∃ gravity center?
@BenCrowell That's my point. It's an idealisation that's not to be taken too seriously. The deeper the question you want to answer, the more honest you have to be.
Jul
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awarded  Popular Question
Jul
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awarded  Yearling
Jun
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comment Can a rock be considered frozen
Note: the phase diagrams of He3 and He4 are quite different.
Jun
3
revised Einstein-de Sitter - confusing constant of integration
added 779 characters in body
Jun
3
answered Einstein-de Sitter - confusing constant of integration
May
27
comment In what order should unit symbols appear?
@BenCrowell IMO, I prefer space rather than dots but yeah, good point, leaving definitely one of those is needed. I should have done this in my question but I'll leave it. I'm not used to typing units, I normally do numerical calculations by hand.
May
27
comment In what order should unit symbols appear?
@SteveMoser Well, as with most things in life, you're probably going to have to find some compromise. Either make some fancy code, or get a simple algorithm and hope for the best. My answer is what 'what humans want', not 'what computers want', I'm afraid. Either way, best of luck - hope it works out!
May
27
answered In what order should unit symbols appear?
May
23
comment Is the meander ratio of a river $= \pi$?
Nice question! It looks like some kind of least action: eps.berkeley.edu/people/lunaleopold/… en.wikipedia.org/wiki/Meander#Derived_quantities
May
22
comment How do we know Dark Matter isn't simply Neutrinos?
Yeah, it'd be a pretty weird Universe otherwise
May
19
comment How do we know Dark Matter isn't simply Neutrinos?
Also, I believe that $\nu$ oscillations only 'prove' a mass difference, not a mass for all three species. But, that's being a bit pedantic, sorry.
May
19
comment How do we know Dark Matter isn't simply Neutrinos?
I was referring to the top-down structure formation (from blinis) that would occur if $\nu$s were HDM, as opposed to the bottom-up formation from CDM that results in the structures we see. It's not new, but they *are* well and truly ruled-out, unless $\nu$ are like 10 eV and we don't know anything :D