# The Naked Scientists Forum

### Author Topic: As=2mg/c2  (Read 26861 times)

#### tony6789

• Neilep Level Member
• Posts: 1127
##### As=2mg/c2
« 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[:(!]
« Last Edit: 30/01/2006 14:43:27 by tony6789 »

#### Soul Surfer

• Neilep Level Member
• Posts: 3345
• keep banging the rocks together
##### Re: As=2mg/c2
« Reply #1 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

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!

#### DoctorBeaver

• Naked Science Forum GOD!
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• A stitch in time would have confused Einstein.
##### Re: As=2mg/c2
« Reply #2 on: 31/01/2006 02:22:52 »
He knows his stuff!

#### ukmicky

• Moderator
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##### Re: As=2mg/c2
« Reply #3 on: 31/01/2006 03:06:39 »
quote:
He knows his stuff!

yeah

Michael                 HAPPY NEW YEAR

#### tony6789

• Neilep Level Member
• Posts: 1127
##### Re: As=2mg/c2
« Reply #4 on: 31/01/2006 15:58:54 »
Wow thanks for that confusing info

- Big T

#### The Naked Scientists Forum

##### Re: As=2mg/c2
« Reply #4 on: 31/01/2006 15:58:54 »