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Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: tony6789 on 30/01/2006 14:19:23

Title: As=2mg/c2
Post by: tony6789 on 30/01/2006 14:19:23

assuming my info is correct the equation for a black hole is As=2MG/C2. What do the letters stand for? it gets me frusturated trying to figure it out[:(!]

Title: Re: As=2mg/c2
Post by: Soul Surfer on 30/01/2006 18:59:33

The correct formula is  Rs = 2MG/c^2

This means that the critical radius R (subscript) s is equal to  twice the mass times G the gravitational constant (6.67x10^-8 dyne centimeteres squared divided by the acceleration due to gravity on the earth)  divided by c the speed of light (in centimeteres per second) squared.

For a mass approximately equal to the masss of the sun  2x10^33 grams

This radius is about 3km  and is sometimes called the Schwarzchild radius

so if you can take the sun which has a radius of about 700,000 km and squash it into a radius if 3km you will have made a black hole

Learn, create, test and tell
evolution rules in all things
God says so!

Title: Re: As=2mg/c2
Post by: DoctorBeaver on 31/01/2006 02:22:52

He knows his stuff!

Title: Re: As=2mg/c2
Post by: ukmicky on 31/01/2006 03:06:39

quote:

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He knows his stuff!

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yeah

Michael                 HAPPY NEW YEAR                     (https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fi11.photobucket.com%2Falbums%2Fa186%2Fukmicky%2Fparty-smiley-012.gif&hash=844994fd61764508c533537d6874634d)

Title: Re: As=2mg/c2
Post by: tony6789 on 31/01/2006 15:58:54

Wow thanks for that confusing info

- Big T