Black Hole

[Deathcrow]

I'm assuming everyone here knows what a black hole is. It is something so dense that even light can't escape. That means the escape velocity is greater than the speed of light.

Spoiler

The escape velocity of Earth is about 11.2 km/s.

The formula to find that is:
V_esc = sqrt((2*G*Mass of Earth)/Radius of Earth)

The speed of light is C, approximately 3*10^8 m/s.

If we wanted to know what the diameter of Earth would have to be for it to be a black hole (given mass remains constant) we would simply do this:

V_esc = C = sqrt((2*G*Mass of Earth)/Radius of Earth)

C^2 = (2*G*Mass of Earth)/Radius of Earth

Radius of Earth = (2*G*Mass of Earth)/C^2

Diameter of Earth = (4*G*Mass of Earth)/C^2

Now I will plug in the numbers:
Diameter of Earth = (4*(6.67*10^-11)*(5.98*10^24))/((3*10^8)^2)
Diameter of Earth = 0.0178 m = 1.78 cm

Therefore the Diameter of Earth would need to be about 1.78 cm with it having the same mass it has now for it to be a black hole.

Wasn't that fun!? =p

 

[Zain]

Calm yourself Deathcrow. My brain is not equipped well enough for this level of stress.

 

[Deathcrow]

Calm yourself Deathcrow. My brain is not equipped well enough for this level of stress.

lol. I fixed it just for you.

Put a spoiler there so no one has to see any math.

 

[Zain]

Calm yourself Deathcrow. My brain is not equipped well enough for this level of stress.

lol. I fixed it just for you.

Put a spoiler there so no one has to see any math.

D'aw how touching,and yet insulting at the same time Lol

 

[Deathcrow]

Calm yourself Deathcrow. My brain is not equipped well enough for this level of stress.

lol. I fixed it just for you.

Put a spoiler there so no one has to see any math.

D'aw how touching,and yet insulting at the same time Lol

Can't be insulting if I only did it because of what YOU said.

That makes it supportive and understanding. :big_grin_wink:

 

[Scenery]

No.

 

[Deathwish]

CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS! CHAR BYPASS!
Guess the rest of the characters got stuck in a black hole. Oh well. No big deal.

 

[Deathcrow]

No.

But imagine that amount of mass in something that small?

The mass of the Earth in something with a diameter of 1.78 cm.

That is very dense! It is hard to fathom.

 

[Scenery]

No.

But imagine that amount of mass in something that small?

The mass of the Earth in something with a diameter of 1.78 cm.

That is very dense! It is hard to fathom.

So is my head.

 

[Zain]

No.

But imagine that amount of mass in something that small?

The mass of the Earth in something with a diameter of 1.78 cm.

That is very dense! It is hard to fathom.

So is my head.

I hear that

 

[Deathcrow]

So is my head.

So your head is very small?

And which head are you referring to....

lol

 

[Ben Hartley]

Well..

How much pressure would it take to manurfacture a blackhole?

 

[Deathcrow]

Well..

How much pressure would it take to manurfacture a blackhole?

A very large amount. lol

I could probably do the math to figure it out. But there are lots of variables.

But I can say, the only way an object would become a black hole isn't from an outside pressure compressing it. It would be from its own gravitational pull and the object not being able to sustain an outward pressure to keep it from collapsing.

 

[Meetmyarrow]

So is my head.

So your head is very small?

And which head are you referring to....

lol

Stop bringing logic into this. hehe

 

[Haywire]

My brain hurts
But i think i get it.

 

[Stewie]

Blackhole -

Nuff said. :sunglasses_1:

 

[Deathcrow]

My brain hurts
But i think i get it.

=p

Just a little bit of physics.

 

[fes]

My brain hurts
But i think i get it.

=p

Just a little bit of physics.

having fun showing off your physics skills?

 

[Mr.Anderson]

My brain hurts
But i think i get it.

=p

Just a little bit of physics.

Hmm..don't think that's a "little bit"..

Thank you for fucking my brain so hard I now have a headache.

I'll get revenge one day..

 

[Oxide]

I do astronomy, a black hole can be caused by a ton of stuff. Pretty much 90% of them occur from dwarf star's imploding. It's really a great topic to study, I don't go into the maths side of it much though.