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Posted on 11/16/15 at 9:16 pm to DevilDogTiger
Really surprised it took someone that long to mention the hadron collider
Posted on 11/16/15 at 9:16 pm to Master of Sinanju
quote:
Liberate tutame ex infernis.
"We're leaving!"
Posted on 11/16/15 at 9:16 pm to Breesus
quote:
What would happen to me, and everything around me, if a black hole the size of a coin instantly appeared?
quote:
Short answer: You, and everyone around you, will die.
Long answer: Different things will happen if you mean the black hole has the mass of a coin, or if it has the radius. The equation of a black hole is really simple:
Radius = 2 (Gravitational Constant) (Mass) / (Speed of light)^2
Suppose a nickel in your pocket magically collapsed into a black hole. A US nickel has a mass of 5 grams. This black hole would have a radius of 10-30 meters. For comparison, an atom is about 10-10 meters. If atoms were made of atoms, this black hole would be the size of the micro-atom that makes up the milli-atoms that makes up real atoms. Basically, it's unimaginably small.
Such a small black hole would have a similarly unimaginably short lifetime to decay by Hawking radiation- it would radiate away what little mass it has in 10-23 seconds. This 5 grams of mass will be converted to 450 teraJoules of energy, which is comparable to the detonation of about 100,000 tonnes of TNT, and will produce an explosion three times bigger than the atomic bombs dropped on Hiroshima and Nagasaki combined. In this case, you die.
Of course, if the black hole has the radius of a common coin, then it will be considerably more massive. A nickel, again, has a radius of about 10 mm. This black hole has a mass of 1024 kilograms - slightly bigger than the mass of the earth. Its surface gravity is a billion billion times greater than earth's. If it is in your pocket, you will find yourself being drawn towards the black hole at breakneck speeds. Literally breakneck. The difference between your chin and your teeth is about ten trillion g's of acceleration. You'll cross the event horizon before you even realize what's happening. The black hole is now a dominant gravitational piece of the earth-moon-black hole of death system. If you watch sci-fi movies a lot, you might think that the black hole sinks towards the center of the planet and will consume it from the inside out. In actuality, the earth will also move up onto the black hole, and begin to bob around as if it was orbiting the black hole, all while having swaths of mass eaten with each pass. The bulk of the planet earth is consumed after some time, leaving a scattered disk of hot dust and rock in a tight orbit where the earth once was. The black hole grows slowly during this time, eventually doubling its mass by the time it's done feeding.
The effects on the solar system are awesome, but moreso in the Biblical sense of "awesome", which more closely means terrifying. The moon's orbit is now highly elliptical. Tidal forces from the black hole could disrupt the asteroid belt, sending rocks careening through the solar system - bombardment and impacts may become commonplace for the next few million years. The planets are slightly perturbed, but they stay approximately on the same orbit. The black hole we used to call earth will now continue on orbiting the sun, in the earth's place.
In this case, you also die.
taken from a reddit post, no link because frick other forums
Posted on 11/16/15 at 9:25 pm to mailman
There are some pretty obvious flaws in scale at the very least in that post.
The earth weighs more than roughly 1 metric ton.
There are some other measurements that get thrown out that don't make sense that seem almost like typos, but they are also consistently wrong. It's hard to trust anything there.
quote:
This black hole has a mass of 1024 kilograms - slightly bigger than the mass of the earth.
The earth weighs more than roughly 1 metric ton.
There are some other measurements that get thrown out that don't make sense that seem almost like typos, but they are also consistently wrong. It's hard to trust anything there.
This post was edited on 11/16/15 at 9:26 pm
Posted on 11/16/15 at 9:27 pm to mailman
It's pretty incredible that you posted on tigerdroppings by dropping books from a bookshelf onto the keys.
Posted on 11/16/15 at 9:35 pm to Peazey
If you get past whatever measurement problems you have in that post, in general it agrees with what the general consensus has been in this thread. A black hole that is the size of a nickel but has the mass of earth. What that means is that you would have to take the earth and compress it down to the size of a nickel. This is a lot of mass relative to your size. Of course if you were standing right next to it, it would have an extreme effect on you. Does not the Earth have a pretty extreme effect on you? It is not a reasonably feasible thing to do.
The fact that it's a black hole is almost entirely irrelevant. If you placed an object of any density with the same mass next to the Earth, it would have similarly devastating effect.
The fact that it's a black hole is almost entirely irrelevant. If you placed an object of any density with the same mass next to the Earth, it would have similarly devastating effect.
This post was edited on 11/16/15 at 9:37 pm
Posted on 11/16/15 at 9:36 pm to mailman
You aren't intelligent enough to concern yourself with black holes
Posted on 11/16/15 at 9:42 pm to mailman
Don't worry. Black holes don't exist.
Posted on 11/16/15 at 9:43 pm to mailman
there's 20,000 black holes in our galaxy
freaky
freaky
Posted on 11/16/15 at 9:43 pm to Peazey
10^24, 10^-30, etc...I assume.
Posted on 11/16/15 at 9:45 pm to mailman
Thought this was an African sex thread
Posted on 11/16/15 at 9:46 pm to G2160
It would have to be. But it should be written that way.
Posted on 11/16/15 at 9:47 pm to Peazey
quote:
The earth weighs more than roughly 1 metric ton.
There are some other measurements that get thrown out that don't make sense that seem almost like typos, but they are also consistently wrong. It's hard to trust anything there.
I think that was supposed to be 10 to the 24th power. The forum isn't set up to display exponents.
Posted on 11/16/15 at 9:51 pm to Bestbank Tiger
quote:
My eerie thought of the night- black holes
I saw that on Bourbon Street and lost consciousness for a few minutes.
Posted on 11/16/15 at 9:57 pm to Peazey
quote:
This black hole has a mass of 1024 kilograms - slightly bigger than the mass of the earth.
this probably is meant to read 10^23 kilograms
Posted on 11/16/15 at 10:13 pm to mailman
Man has never created anything. Let's start with one baby step before we jump all the way to black holes. Man is no closer now than he was 5000 years ago to creating something.
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