Originally posted by §lîñk€¥™

(but only if someone specifically request it).

 

kind regards

 

I'd like to see it.

Originally posted by NSX

I'd like to see it.

I hope it's in Sci-am, because I have about 300 news scientists but only a handful of sci-ams. Give me a day or two and I'll see if I can dig it out.

Originally posted by §lîñk€¥™

Black holes (BH from hereon) are curious objects.

 

The curious thing about them is that if you could watch something falling towards a BH you would never see it cross the event horizon (EH from hereon). For example, if I was watching a clock fall toward a BH, I would notice that it slows down more and more as it gets closer to the EH (it also would get dimmer and dimmer). This will always be the case from any view outside the EH no matter how long you wait. The clock will never be seen to cross the EH. It will slow down and then appear to be frozen (it won't be frozen but will be moving imperceptably).

 

So does the clock ever actually cross the EH of a BH?

 

I say it doesn't.

 

 

 

when clock is falling into the black hole u see the reflection of lght that comming from it.also the incredible gravity field will changing the light from blue to red after that infra red an so on until u wont be able to see the wach because the energy of the light comming from it will be equal to zero.that mean black hole sucked all energy like vacuum cleaner and u cant detect the light.thats why it is called BLACK HOLE because nothing comming out even single bit of energy.so wach keeps falling into black hole but u will see the light slowly changing untill it dissapear. I AM NOT SHURE WHETER MY GRAMMAR IS RIGHT, but i hope u get the idea.

I'm reading the book EARTH by David Brin. Have any of you read it? Its story line is quite depressing. A black hole was shot into the earth by something and is eating up the earth. But I didn't reply to say that. I believe one watching something go towards a BH would see it excelerating until it hits a speed that gives off a frequency of light that are eyes can't see. And for the one traveling into the event horizon, time would slow down until it is inf. small, which it would still slow down but it is impossible to write anything smaller than inf. small. For the free faller, they would never reach the EH, but the looker would see them reach it.

____________________________________________________

I also belive time is not a constant, but a varible and is diffrent depending on ones mind.

Originally posted by KHinfcube22

For the free faller, they would never reach the EH, but the looker would see them reach it.

 

the free faller would definitely reach the EH. local time is not altered at all for him (well okay, it will be a little bit because of the huge warping of specatime over his own body volume, but for simplicity we will ignore that).. however someone watching him yould never see him reach the EH as he would be redshifted out of existance.

boohoo, any way, if one ever did get close enough to reach a black holes event horizon, it would move at extreme speeds, and it would be constantly be hitting random molecules which would have a gamma ray like effect to the free faller, causing him to die even before he reached the EH.

Not if you were in space ship!!!!! In theory you could sit a couple feet from the EH and experience years in seconds, then escape and travel into the future!!!!

Originally posted by KHinfcube22

boohoo, any way, if one ever did get close enough to reach a black holes event horizon, it would move at extreme speeds, and it would be constantly be hitting random molecules which would have a gamma ray like effect to the free faller, causing him to die even before he reached the EH.

 

clearly you have no idea what you're talking about.

To extend slightly on my point, radiation is the last of your concerns when you're a few feet away from the event horizon of a black hole with no protection at all. What's far more likely to kill you is (a) not being in a spacesuit, (b) particles going through you, © the intense gravitational force upon your body

according to Issac Asimov, even if one was in a spaceship they would still be vunerable to the gamma effect. and i DO know what I am talking about, (paritialy.) what would happen if someone was crogenically frozen and thrown into a blackhole?

They'd defrost.

what if we found a way to keep frozen liquid nitrogen to stop melting at room temperature?

That's easy:

 

(1) Ensure room temperature is the same as the liquid nitrogen,

 

or

 

(2) Don't allow the nitrogen to expand.

 

 

Either way though, you'd need a hell of a lot of shielding to protect you from the output of a black hole. I'd suggest some form of temporal shielding, with all the gadgets and doodahs inside the shield perimeter.

I suggested it this way though to examine the Idea of a none animate being going into a time fluctuating singularity.

I don't see why that would be any different to sending through an animate living person, other than the fact that your passenger would not experience any of the trip.

 

A gamma ray is just as happy zipping through frozen tissue as it is living tissue, by the way.

what about putting the victim, I mean passenger, in a thing of nuclear waste so they the would be radioactive? That would stop gamma wouldn't it? ( just so you don't think I'm a COMPLETE idiot, I'm only joking.)

Well it would certainly stop the gamma from killing them.

its the perfect plan! you go first!

^^^ lol funny stuff, kinda out of the question and topic but i heard say when sumone enters the event horizon the last color there able to see is red or violet or sumthign along those lines

One thing's for certain... you better hope space-time distortion doesn't allow for your safe journey to the brink.

 

Immagine an eternity of knowing you are right about to die.

so does a black hole (I mean the bit in the middle) actualy get any bigger the more it`s "fed" or does it stay the same size and just become more massive?

 

or...

 

I think some of the above might mean that nothing ever reaches the middle bit, but it just kinda gets "locked up" forever?

 

I realise my curiousity exceeds my knowledge in this area, but I hope my questions aren`t TOO basic

The only real measure of size is the event horizon, and of course that gets bigger when you add more mass.

erm... ok?

what is that tho (the event horizon) I assume it`s a bit like photoshpere on our sun?. and isn`t there a little tiny mega dense black ball in the middle? and what would that be called?

 

neat that someting gets bigger though! thnx

it would seem odd to have all this stuff going IN and yet no sort of increase!

The matter may be evenly distributed, it may be centralised, it doesn't matter, and we can never find out.

MrL_JaKiri said in post #49 :

The matter may be evenly distributed, it may be centralised, it doesn't matter, and we can never find out.

Unless we tied a rope around YT real good, and like --- dipped him into the event horizon with a polaroid camera 'n stuff.