Black Hole the size of a Nickel

Paradisefound · October 26, 2018 10:32PM

Someone asked what would happen to and if a Black Hole the size of a nickel suddenly appears in our pocket (or earth)?

Supposed a nickel in your pocket magically collapsed into the Black Hole....
........ a US nickel has a mass of 5 grams would be converted to 450 terajoules of energy which is comparable to the denotation of about 100.000 tonnes of TNT explosion ......

Bigger than.....
Well ..... what I want to say is......

Welcome back @Insider2

Paradisefound · October 26, 2018 10:42PM

Updated 10/27 to add : Please NO NEED to response; I just realized there already a Thread for the same purpose

Aspie_Rocco · October 26, 2018 10:48PM

Did someone say nickel?

Paradisefound · October 26, 2018 10:53PM

Yes ..... so you better get it out of your pocket

@Aspie_Rocco said:
Did someone say nickel?

Aspie_Rocco · October 26, 2018 11:02PM

There is a “black hole” nickel sized

OldEastside · October 26, 2018 11:24PM

Dats alotta bang for a nickel

Steve

Timbuk3 · October 27, 2018 1:50AM

Wow, imagine if it were a 5oz ATB, what damage that would cause !!!

drei3ree · October 27, 2018 2:13AM

@OldEastside said:
Dats alotta bang for a nickel

Steve

+1

LanLord · October 27, 2018 6:27AM

I'm a little fuzzy on this whole thing,
is the actual singularity the size of a nickel or is the event horizon the size of a nickel?

Just curious

ricko · October 27, 2018 6:37AM

@Paradisefound ... Is that a blue pearl in your second post? Found while diving?? Cheers, RickO

jmski52 · October 27, 2018 7:53AM

This post certainly has gravity.

Onastone · October 30, 2018 3:54AM

Yes Welcome back @Insider2 !!!!!!!!!!!!

WingedLiberty1957 · October 30, 2018 3:56AM

Is there an Insider1?

1630Boston · October 30, 2018 4:00AM

It appears that NASA agrees with the size being that of a 5 Cent piece

Supermassive Black Hole Consumes a Star (NASA's Newest Simulation)

https://youtu.be/1r3GCirDBvI
@Paradisefound

jafo50 · October 30, 2018 2:14PM

@Paradisefound Glad to see your old avatar is back. Didn't particularly care for the Blue Dot.

ctf_error_coins · October 30, 2018 2:22PM

@jafo50 said:
@Paradisefound Glad to see your old avatar is back. Didn't particularly care for the Blue Dot.

Actually, she was trying to have us gift her this .....

Kudbegud · October 30, 2018 2:22PM

In any case, you want to stay away, far far away, from ANY black hole. And especially keep one out of your pocket.

Welcome back insider2. May your return be slightly less explosive than a nickel sized black hole appearing in your pocket.

Paradisefound · October 30, 2018 5:30PM

The Blue Dot was symbolic of "I am with her him" with @Insider2 upon his return

......and now you go ahead participate in the contest ends this coming Saturday

@jafo50 said:
@Paradisefound Glad to see your old avatar is back. Didn't particularly care for the Blue Dot.

Insider2 · October 30, 2018 5:35PM

I think you originally started the ball rolling to get me and the others back on to CU in a reasonable amount of time.
Thanks

Paradisefound · October 30, 2018 5:38PM

"I am with her them" ...... rather

topstuf · October 30, 2018 5:51PM

@Paradisefound said:
Updated 10/27 to add : Please NO NEED to response; I just realized there already a Thread for the same purpose

Oh yes there IS a reason to respond.
You MUST read the novel, "Earth" by David Brin.
It's a real page-turner even though it's not a new book.
A black hole gets loose and what happens is a mess. Exciting as hell.

One of the best reads you'll ever have.

Paradisefound · October 30, 2018 5:56PM

@topstuf
I'll get my kindle going

savitale · October 30, 2018 7:01PM

OK, I know you didn't ask but this is vaguely related to what I do for a living. Black holes have a lifetime proportional to the cube of their mass. A black hole with a mass of 5 grams would last for about 1E-23 or 1/100,000,000,000,000,000,000,000 seconds. So if you had one in your pocket, you wouldn't have to worry about losing anything important due to gravity. Other than your nickel.

Now, how you choose to handle the terajoules of radiation in your pocket ... that's a different matter entirely.

Paradisefound · October 30, 2018 7:05PM

LOL & Luving it

@savitale said:
OK, I know you didn't ask but this is vaguely related to what I do for a living. Black holes have a lifetime proportional to the cube of their mass. A black hole with a mass of 5 grams would last for about 1E-23 or 1/100,000,000,000,000,000,000,000 seconds. So if you had one in your pocket, you wouldn't have to worry about losing anything important due to gravity. Other than your nickel.

Now, how you choose to handle the terajoules of radiation in your pocket ... that's a different matter entirely.

Insider2 · October 30, 2018 8:29PM

@savitale said:
OK, I know you didn't ask but this is vaguely related to what I do for a living. Black holes have a lifetime proportional to the cube of their mass. A black hole with a mass of 5 grams would last for about 1E-23 or 1/100,000,000,000,000,000,000,000 seconds. So if you had one in your pocket, you wouldn't have to worry about losing anything important due to gravity. Other than your nickel.

Now, how you choose to handle the terajoules of radiation in your pocket ... that's a different matter entirely.

OK, you started this. Where would the mass come from? Does the hole have an end?

Paradisefound · October 30, 2018 9:05PM

Simulation of gravitational lensing by a black hole, which distorts the image of a galaxy behind it

Paradisefound · October 30, 2018 9:09PM

A black hole with the mass of a nickel would cause an explosion 3x bigger than both atomic bombs combined.
A black hole as wide as a nickel would have slightly more mass than Earth.
A black hole with the radius of a nickel (10mm) would destroy the Earth and draw the moon into an elliptical orbit.

Paradisefound · October 30, 2018 9:10PM

Paradisefound · October 30, 2018 9:16PM

BTW I do know they evaporate ......

The microscopic black hole would evaporate within a fractions of seconds, but,
.....it is estimated that a black hole with the mass of our SUN
...... would take 10^67 years to evaporate - that's a 1 followed by SIXTY-SEVEN ZEROS

@Insider2 said
OK, you started this. Where would the mass come from? Does the hole have an end?

BlindedByEgo · October 30, 2018 9:54PM

Be hard to get close enough to measure it? What if it was out of Mint specifications?

BJandTundra · October 30, 2018 10:34PM

If the nickel size black hole was a DDO would it be any more valuable?

Paradisefound · October 30, 2018 10:39PM

I suppose ..... it would give you a ripple affects?

@BJandTundra said:
If the nickel size black hole was a DDO would it be any more valuable?

BJandTundra · October 30, 2018 10:54PM

Oh great. Now we will have a bunch of threads asking if the nickel size black hole they found in their pocket is a real DDO or PMD. ....Sorry, its late here.

Kudbegud · October 31, 2018 12:07AM

Just added the Kindle version to my phone. Thanks for the tip @topstuf

JBK · October 31, 2018 3:39AM

"All this science, I don't understand."

Pls don't try to slip some learning past me disguised as a discussion about nickels.

I'll take your word on all the Black Hole stuff. All those huge #s make it seem like science fiction.

At times my US coin collection has been a Black Hole, sucking up all the $ it can and making them disappear.

messydesk · October 31, 2018 6:32AM

@savitale said:
OK, I know you didn't ask but this is vaguely related to what I do for a living. Black holes have a lifetime proportional to the cube of their mass. A black hole with a mass of 5 grams would last for about 1E-23 or 1/100,000,000,000,000,000,000,000 seconds. So if you had one in your pocket, you wouldn't have to worry about losing anything important due to gravity. Other than your nickel.

Now, how you choose to handle the terajoules of radiation in your pocket ... that's a different matter entirely.

But suffice it to say you're not going to be having any more kids.

Insider2 · October 31, 2018 9:14AM

@savitale said:
OK, I know you didn't ask but this is vaguely related to what I do for a living. Black holes have a lifetime proportional to the cube of their mass. A black hole with a mass of 5 grams would last for about 1E-23 or 1/100,000,000,000,000,000,000,000 seconds. So if you had one in your pocket, you wouldn't have to worry about losing anything important due to gravity. Other than your nickel.

Now, how you choose to handle the terajoules of radiation in your pocket ... that's a different matter entirely.

Where does the mass come from? Is it inside the hole? On the hole's rim?

RogerB · October 31, 2018 9:52AM

Your question seems to refer to diameter ("size" or the event horizon) not mass. If that is correct, the black hole would rapidly absorb our little solar system....including nickels with a mass of 5-grams. (The hole's mass would be about 2 suns. An accretion disc of about 8,000 km would immediately form and expand to 75,000 km within 10 seconds; expansion would continue until the new binary system became gravitationally stabilized. The black hole's gravity would perturb the orbits of everything in the solar system as it and our sun fall toward each other. A close binary would form and consume all the inner planets, but Jupiter and the outer planets would likely be thrown out of the system to become unobservable matter.)

Now, about the nickel in you pocket....

topstuf · October 31, 2018 1:36PM

This is how it all works so quit talking about it now.

Insider2 · October 31, 2018 1:43PM

@RogerB said: "Your question seems to refer to diameter ("size" or the event horizon) not mass."

NOPE. @Insider asked: Where does the mass come from because of this:

@savitale said: "A black hole with a MASS of 5 grams...

RogerB · October 31, 2018 2:21PM

OK. I only took the OP's first statement as defining size.... Since a theoretical black hole can have any mass equal or greater than Planck mass (about 2.2×10−8 kg) the nickel could exist. But it appears that the minimum black hole mass - based on present understanding of neutron star to black hole - is about 2.2 suns. (No number is given for daughters, but they are inscrutable anyway so are part of quantum magnetohydrodynamics.)

savitale · November 1, 2018 9:26PM

@Insider2 said:

Where does the mass come from? Is it inside the hole? On the hole's rim?

Where do you think all those pennies go that were supposedly minted for circulation?

Insider2 · November 1, 2018 9:32PM

Looks like someone is making up "unsearched" wheat bags for TV shoppers. LOL. Three scoops of 50's, one scoop of 40's, a handfull of 30's and 20's, 6 steels, some teens, and one 1909 VDB. Been there done that.

PS I was serious about the mass question.

Paradisefound · November 1, 2018 9:35PM

I am afraid I may have to send the book to read.....way too much to post
....and beside there are several theories so the bottom line is ..... the hole will eat us all up in one gulp

@Insider2 said:
Looks like someone is making up "unsearched" wheat bags for TV shoppers. LOL. Three scoops of 50's, one scoop of 40's, a handfull of 30's and 20's, 6 steels, some teens, and one 1909 VDB. Been there done that.

PS I was serious about the mass question.

Insider2 · November 1, 2018 9:39PM

I'll look up black hole on Google. I always thought that something became so heavy that it collapsed into itself to form a "hole."

Wabbit2313 · November 1, 2018 10:06PM

Skip,@insider2, hang tight. We will have the answer shortly.

Black Hole the size of a Nickel

Welcome back @Insider2

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Where does the mass come from? Is it inside the hole? On the hole's rim?

Where does the mass come from? Is it inside the hole? On the hole's rim?

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