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kay wrote:I think he's postulating that black holes don't exist as we currently define them, because the current definition implies an event horizon ie a point of no return. It seems like a logical step from all his work on black hole evaporation and the apparent quandary of the distruction of information.

Yeah this. Good read but the title was a little misleading lol.

Yeah, poor headline grabbing crap as is becoming the norm with reporters reporting on science.

Here's a better one, pretty similar to what I wrote:
http://phys.org/news/2014-01-grey-black ... wking.html

Piquant.

Human observation of dark energy may shorten the life span of the universe

alphacat wrote:Piquant.

Human observation of dark energy may shorten the life span of the universe

Correct me if I misspeak oh quantum gods, but isn't there an observation anytime one quantum system interacts with another quantum system?

nowaysj wrote:

alphacat wrote:Piquant.

Human observation of dark energy may shorten the life span of the universe

Correct me if I misspeak oh quantum gods, but isn't there an observation anytime one quantum system interacts with another quantum system?

not necessarily, they can just become entangled / superimposed

wavefunction collapse / quantum decoherence occurs more when a macroscopic system interacts with a quantum one (which is what happens during an observation)

Not all physics related, but I thought this was pretty cool:
The Coolest Science of 2013, in GIFs

kay wrote:Not all physics related, but I thought this was pretty cool:
The Coolest Science of 2013, in GIFs

Nice!

Sorry, have to ask, have we never seen ejaculation in space?

pretty sure neil armstrong wanked out of the door of the rocket when it landed on the moon in 1066

"One small step for man, one giant leap for the insertion of superfluous u's into another language."

spooky action at a distance. anyone know that shit?

What do you mean?


Also, I have a question.
It's not physics at all, but it'd be a bit tedious, and presumably annoying to others too, to create an additional mathematics thread so here goes...

What actually makes the Epsilon Delta definition of a Limit useful. As in, what qualities does it have that more intuitive approaches lack?
I get that it's tidy, and that most importantly it works, but it just feels so tedious to go through it, especially when Professors, and school teachers alike, explain to you what a limit is and start chucking all that unfamiliar mathematical notation at you. I want to know what using this method will help me do in future. I know there;s a reason, I just don't see it yet.
To me it seems like a cryptographic way to convey the idea of a limit.

If, on the off chance, it's just for the purposes of further mathematical use, could you point them out?



I feel that when I have information and don't know how to use it I'll just end up forgetting it.

you can use them to do limits of multivariable functions

what is/was/will be ur major phigure?

Cheers.
I guess I found my mission for this semester.

"The First Law of Thermodynamics states that energy, such as the electrical charges generated by your brain, or the heat your body produces cannot be created or destroyed, but simply changes form—implying that the energy that powers your body must go somewhere when it leaves, and that consciousness cannot be destroyed, but is infinite."

Anyone feeling this? ...or am I just so egotistical that I like anything that implies I'm technically immortal.

if you're body's atoms and molecules being burned into the atmosphere, becoming part of the air other people breathe, and then eventually getting shat out of a deer's anus makes you immortal, then by all means

I think guy just means the electricity in your body which is your "consciousness" never gets destroyed and simply becomes part of something else on earth and continues to be energy in some form.

dubunked wrote:spooky action at a distance. anyone know that shit?

Quantum entanglement. Entangled particles will instantaneously exchange information between them, regardless of how far apart they are.

don't see what's so spooky about that.. aren't most forces are like 1/r^2 or something similar so yeah they should have a small effect even if they're extremely far apart right? what makes that special?