Imagine the pressure you'd feel at the bottom of the Mariana Trench. - sci.math

Message from discussion Imagine the pressure you'd feel at the bottom of the Mariana Trench.

BradGuth

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More options Nov 7 2009, 1:33 am

Newsgroups: sci.math, sci.physics, alt.astronomy, sci.physics.relativity

From: BradGuth <bradg...@gmail.com>

Date: Fri, 6 Nov 2009 17:33:55 -0800 (PST)

Local: Sat, Nov 7 2009 1:33 am

Subject: Re: Imagine the pressure you'd feel at the bottom of the Mariana Trench.

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On Nov 6, 1:24 pm, "Androcles" <Headmas...@Hogwarts.physics_p> wrote:

> "Henry Wilson DSc ." <HW@..> wrote in messagenews:6609f5l470q2k3fhinr38fi87fau9ctmpn@4ax.com...

> > On Fri, 06 Nov 2009 18:26:30 GMT, Sam Wormley <sworml...@mchsi.com> wrote:

> >>Henry Wilson DSc wrote:

> >>> Wormey, what exactly causes a SN to explode?

> >> Contributors include shock wave bounce and a tremendous outpouring of
> >> neutrinos.

> >> In the case of SN 1987A
> >> o total anti-neutrino energy 3 x 10^52 erg
> >> o total neutrino energy 2.5 x 10^53 erg
> >> o total neutrino luminosity 10^55 erg/s
> >> o average neutrino temperature 4 MeV or 10^10 K
> >> o number of neutrinos produced 10^58 neutrinos

> >> o neutrino flux density at the earth 5 x 10^10 /cm^2

> > Which comes first, the neutrinos or the explosion?

> Two stars collided for that one. You can clearly see the double
> ejecta.
> http://www.public.asu.edu/~rjansen/localgroup/SN1987A_Challis.jpg

Nice one. How many light years diameter for each of those rings?

~ BG

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