Science is interesting

[Mete]

Does this mean there'll be more blood for the blood god?

[SaintCrazy]

Finally, vegetarian vampires are a reality.

[Mete]

Read a bit about wormholes on Wikipedia and found this interesting excerpt:

Schwarzschild wormholes and Schwarzschild black holes are different, mathematical solutions of general relativity and Einstein–Cartan–Sciama–Kibble theory of gravity. Yet for distant observers, both solutions with the same mass are indistinguishable. These results suggest that all observed astrophysical black holes may be Einstein–Rosen bridges, each with a new universe inside that formed simultaneously with the black hole. Accordingly, our own Universe may be the interior of a black hole existing inside another universe.

Imagine that. A universe inside a black hole inside a universe inside a black hole inside a universe...

[Madican]

Quantum physics seems to be the area of science where all the rules just don't apply anymore and all is anarchy.

[Syobon]

That's relativistic physics technically, not quantum.
Basically:
everyday stuff: Newtonian physics aka common sense
really small stuff: quantum physics
really fast or really large/dense stuff: relativistic physics

Note that it's not that Newtonian physics are actually correct for everyday stuff, they're just a good enough approximation.

[Madican]

I thought relativism fell under the quantum physics umbrella. It's certainly weird enough to be that way, what with bending time itself through sheer gravity and/or speed.

[Syobon]

I'd assume it's because the third derivative is the change in the change in the change of the motion, so it's altering how it should be acting, a bit like jerking something affects its motion?

But then that's a bit arbitrary, since the same could be said of a second derivative and movement is so messy in the real world that you have infinite derivatives you can apply to any real motion, so it could even be fourth or fifth or seventeenth derivative.

Maybe it's just a arbitrary technical term?

Edit: whoops yep technical term and I guess not so terribly arbitrary. Any higher derivative could still fit, I think, though.

That's not really how it work, a jerk is a change in momentum and a change in momentum is a (de)acceleration. The derivative of acceleration would describe the rate at which acceleration changes, but has no real scientific meaning and is never used.

Edit: this post is wrong

[SaintCrazy]

The joke I posted just simplified it as jerk is the derivative of acceleration, just as acceleration is the derivative of velocity.

http://en.wikipedia.org/wiki/Jerk_(physics)

I peeked at the wiki a bit, it is apparently useful in engineering and manufacturing. Makes sense for roller coasters, not only do you need to worry about the acceleration, but you also need to worry about how the acceleration is changing.
"never used" is quite the exaggeration.

[Syobon]

Huh, looks like I was completely wrong. Learn something everyday.

[Madican]

Still think it's an overly complicated joke.

[Exeres]

Exactly the kind that should be on xkcd.

[SaintCrazy]

I already knew what jerk was beforehand, so I got it right away. Jokes are no fun when you have to do research, I agree, but I was hoping someone math/physics savvy would know what it was. Maybe I hang out with engineers too often.

Besides, I just found it on Google images. Shrug.

[The Willow Witch]

Tomorrow night the perigee is happening

supermoon guys, go look at it.

For science.

[TheStranger]

Like in the Recess movie?

[Mete]

Test tube baby: http://bit.ly/13V60OO
Artificial heart: http://nyti.ms/18WdNxW
Exoplanet: http://bbc.in/13DOAHB
Planarian worms: http://bit.ly/1b1onEu
Gene therapy: http://bit.ly/16xDZZt
Star birth: http://bit.ly/130nzX4