♪♫ caek's corner ♪♫

https://www.youtube.com/watch?v=ZlfIVEy_YOA

https://www.youtube.com/watch?v=ZlfIVEy_YOA

i am in a weird-ass software dev workshop and it is passing me by

http://3.bp.blogspot.com/_CezSYzAS5Ms/TIGsRHpnESI/AAAAAAAACMM/aRj7yQcEyRU/s400/DSC09423.jpg

...wait for it...

my buddy was on the UK experiment that would have gotten this discovery first if the uk govt had not defunded it in order to save £2m

bg's explanation is legit and clear and short

https://www.facebook.com/photo.php?fbid=843023029056612&set=a.191237650901823.54357.178097115549210&type=1&stream_ref=10

the cosmology big guns on inspect the results on FB

https://www.facebook.com/groups/574544055974988/

motherfucker u been holding out on us

hi

teleportation is the headline

but rly is this Dutch thing gonna be abt information processing and transmission, sounds huge

link?

http://www.irishtimes.com/business/sectors/technology/beam-me-up-scientists-say-human-teleportation-is-possible-1.1815010

hmm. odd article. fairly well understood theoretically, looks like a valuable but incremental practical advance.

that's just the spin put on it

Would be interested if you consider this credible, a new model of the Thea collision that incorporates a previous smaller moon into the mix.
http://nautil.us/issue/13/symmetry/when-the-earth-had-two-moons

http://en.wikipedia.org/wiki/Leviathan_of_Parsonstown

i was here today it looks like this '_'

https://www.facebook.com/photo.php?fbid=10152245376168772&l=e2f516ca33

posting from fb so im assuming that wont work but anyway

https://www.facebook.com/photo.php?fbid=10152245376168772&l=e2f516ca33

i kind of struggled to get through that moon article. it is not crazy but my undersrtanding (not a solar system guy) is that there is a less crazy idea that is the "consensus".

Nautilus seem to have a knack of making ropey premises seem credible, starting to think that is their MO.

not to get all degrasse tyson on your thread but

http://www.newscientist.com/article/dn25723-massive-ocean-discovered-towards-earths-core.html

plants, man! crazy stuff

planEts, sry

woah

"We should be grateful for this deep reservoir," says Jacobsen. "If it wasn't there, it would be on the surface of the Earth, and mountain tops would be the only land poking out."

It is a headfuck thinking about where all the water comes from, it seems like there is too much to have been delivered by comets alone.

oh some crazy moon has an ocean under its surface, wait so does our planet.

i was not aware of that! that is cool. the NS article is a bit casual about the difference between "evidence for" and "consistent with", but otherwise seems legit.

is it possible that the molecules in a liquid can remain static

like if u had liquid in a container with no gravity acting on it and heat/pressure was consistent would it still be moving

no the molecules must be moving (goes for solids and gases too)

that's the definition of non-zero temperature

they stop moving by definition at absolute zero, but absolute zero is a theoretical limit and cannot be reached by a liquid

good episode http://www.bbc.co.uk/programmes/b01r113g

thank you for the martin rees recommendation in some other thread, been enjoying "our cosmic habitat".

it is a great "i want to read one book, 200 pages please" recommendation

martin rees's dad was our family GP when I was a kid -- he looked like the mekon, except tall

sounds like martin rees but tall

come to think of it I was quite small so possibly not that tall

so the difference is that solids will vilbrate but the movement of molecules is constrained within that, like a lattice structure or whatever, so they can only move to a certain extent? whereas in a liquid the molecules will move around independently, interchange positions, etc?

yeah in a solid things are constrained, but still jiggling

in a liquid (absent gravity, boundaries of container, etc.) things can go wherever

thank you that is exactly what i wanted to know

this was inspired by imagining the molecules moving around in an inert, cellared bottle of wine

(im drinking wine rn)

lol

caek i read the other day that absolute zero is no longer regarded as the point at which atoms cease to move but at which they attain the lowest possible (theoretical) energy state, is this right y/n?

isn't that an intersection

anyways idk re particle motion but absolute zero occurs on the saula rd around mid November,normally when the taxi has gone home and you've lost yr jacket

not sure exactly what your article was talking about NV but...

yeah 'cease to move' is the classical description of what goes on at absolute zero

in quantum mechanics it's not that simple because they're delocalized (i.e. their location is fuzzy via the uncertainty principle)

http://static01.nyt.com/images/2014/08/06/science/comet-gif-67P/comet-gif-67P-articleLarge.gif

forces are propogated by massless particles. e.g. the electromagnetic force, which is the force that dominates our lives, keeps us warm, prevents us from walking through doors, etc., is propagated by the best known massless particle, the photon.

massless particles travel at exactly the speed of light. therefore forces can only propagate at the speed of light, you are correct.

there is a thought experiment about this involving the sun suddenly disappearing. if this happened then the earth would stay on its orbit for 8 minutes, before suddenly flying off into space, because that's how long light takes to reach us.

the reason all this makes sense is complicated and difficult to explain without getting into special relativity, which is not my strongest subject, and not something i've ever been good at teaching. but perhaps if you're comfortable with the idea that you can't send information at faster than the speed of light, then it would make sense to you that you can't have forces that operate faster than that (or instantaneously) because they could be used to transmit information at faster than the speed of light.

this wikipedia article makes a decent stab at this. of course once you throw in quantum mechanics all hope of understanding this is lost, because that stuff makes no fucking sense whatsoever.

― caek, Saturday, 5 December 2009 22:28 (4 years ago) Bookmark Flag Post Permalink

fave ilx post, I think

fave ilx thread title, sometimes

it's a good jingle

http://apod.nasa.gov/apod/image/1408/comet_on_3_august_2014.jpg

s/t for this thread

https://www.youtube.com/watch?v=eGPhUr-T6UM