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 endtimes rated 17 months ago- 10 things you didn't know about Black Holes
If you find yourself being sucked into a black hole, make sure it's a rotating black hole. Theory says that rotating black holes have two event horizons, like an entrance and an exit. For this reason rotating black holes could theoretically pr...
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45 Reviews
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- smano rated 16 months ago
- * As objects fall closer to the singularity spaghettification increases in power at an incredible rate so you would literally be torn apart bit by bit. This is the process:
o The object is torn into its component atoms.
o Then the electrons are stripped from the atoms.
o Then the nuclei are ripped apart, into protons and neutrons.
o Then the protons and neutrons are torn apart into quarks.
o Finally there is nothing left of the falling object, and the black hole has slightly greater mass.
 eliasen rated 16 months ago- Was this page an attempt to get every single fact wrong? Starting from the completely inappropriate title, "Top 10 Most Expensive Exotic Car Crashes", through every single "fact," there's something either subtly or glaringly wrong with each one. It has to be intentional; nobody can get every fact wrong.
He says there are 5 categories of black holes and lists 4.
The categories have huge gaps between them, implying there's, say, no black holes between 15 solar masses and 1000 solar masses.
He says supermassive black holes exist at the center of every solar system. I think he meant galaxy. And that's far from proven.
"[intermediate-mass] black holes are thought to be the power behind X-Rays." Uh, all of them?
"Micro black holes: With the mass of a helium atom, these babies are nothing to worry about...unless you are within 100million miles of one!" Okay, now you're really starting to be an idiot. You're pulling invented dangers and figures entirely out of your ass. A black hole with the mass of a helium atom would evaporate via Hawking radiation in about Planck time (that is, the shortest time measurable, like 10^-44 seconds). And during the time it was alive, it would be no more dangerous than any other helium atom within 100 million miles of you. (And how did you choose that number?) They'd have the exact same gravitational field. Where the hell did he pull this out of?
"even though light has no mass!" Uh, light has mass. It doesn't have rest mass, but photons have mass which is proportional to their frequency. A box full of photons will have a stronger gravitic field than the same box without photons in it. Einstein showed this over 100 years ago, Einstein.
"A black hole bends space-time, also know as time dilation." Wrong. Time dilation is different than the bending of space-time. Special Relativity showed you can have time dilation even in flat space. The terms are not equivalent. While black holes do cause time dilation, the bending of space is not known as time dilation.
"This means that if a spaceship was to travel near to a black hole at the speed of light..." Nothing with rest mass can travel at the speed of light. Besides, why bring speed into it? Because you don't understand what you're talking about. Even an object at rest in a gravitic field experiences time dilation. A spaceship traveling near the speed of light would already experience extreme time dilation relative to "unmoving" objects. This paragraph is clear evidence that the author doesn't understand even the simplest concepts of either Special or General relativity. So why is he writing articles about it, then?
"If a particularly large particle accelerator was to produce a micro black hole that escaped it would literally eat the entire planet!" No, you idiot. If this were true, the billions of ultra-energetic cosmic rays that strike the atmosphere every day (which are far, far more powerful than anything we can create in any conceivable particle accelerator,) this would have happened already. Billions of times a day. Every day for billions of years. As noted before, small black holes evaporate almost instantly, radiating fiercely. I once calculated that it would take all the power of the sun, perfectly focused, to be fed into a 960 kg black hole to be sustainable. And if the power was interrupted, it would evaporate in 74 nanoseconds. And smaller black holes radiate even faster. No black hole smaller than this would be stable, and even a black hole of that size would be impossible to maintain even with all the power of the sun being focused extremely carefully into it.
Okay, I've had enough. Suffice it to say that this page is useless. I'd like to throw the author into a black hole.
- Oxyfreshness rated 17 months ago
- What you don't know about black holes can kill you.
- schredder9 rated 16 months ago
- A black hole's concentrated mass bends space-time so tightly inside the event horizon that: space and time swap roles; space flows in only one direction, towards the center; and the singularity lies in a falling object's inevitable future.
- Appaloosa rated 16 months ago
- Amusing and scary all at once.
- CorrodedBeing rated 17 months ago
- "Supermassive black holes: These behemoths are believed to exist at the center of all solar systems (including ours!)"WRONG
- seidojohn rated 16 months ago
- Wow. I hope nobody reads this page who doesn't already know about black holes. Pretty much everything he says is wrong. I was going to go and list it, but SU user eliasen (http://eliasen.stumbleupon.com/) beat me to it (and did a FAR better job of it than I could).
- kdh9910 rated 17 months ago
- what amazes me, leaves me breathless really, is that so far, we know that there are 125 BILLION galaxies, but that each time we learn more of space, new enigmas creep into the brains of the astrophysicists. we do not, we cannot figure it all out. that's the entire wonder, isn't it?
- jakster rated 17 months ago
- Gee, I thought I knew all there was to know about Black Holes...
- Deosneos rated 17 months ago
- Full of misinformation.
A blamage to the internet.
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