20% of physics students, at this university level, thought that humanity had traveled beyond the Moon? And some thought that we routinely use the shuttle to travel to the moon...
That's a lot easier to stomach than the fact that 75% of Americans with postgraduate degrees (and 84% overall) believe that a mythical being was involved in created humanity (source)
Intergalactic travel doesn't seem feasible, the timescales are just too big. But what about this galaxy?
I'd tend to think that the fact we haven't encountered intragalactic travellers lends weight to the hypothesis that we are the most advanced life form yet in this galaxy. (Bayesian reasoning!)
We can probably colonize the galaxy within a few million years, which is nothing on a cosmological timescale.
Even if these neutrinos are proven to be FTL, it doesn't mean the barrier was broken: another explanation would be that all neutrinos are FTL. They stay on the other side of the barrier their whole life!
Because the mass is so small. I believe that current estimates of the neutrino masses is small enough that it might not produce any observable difference in travel time across the observable universe
In whose reference frame though? In our frame, the lifetime of a moving particle appears longer if the particle is moving faster. There is no such thing as the 'lifetime of a charged pion' without also specifying its speed relative to yours.
My first thought on reading this article was that they had not taken into account "relativistic effects", i.e. they had assumed Euclidean geometry in their calculations, instead of Einsteinian. For example, how do you measure the 732km? If you take Cartesian coordinates in Euclidean 3-space then you get the wrong answer, because space is curved (GR) and the distance depends on the relative motion of the measurer (SR) -- who will be moving at a different velocity relative to each end of the track , since the earth is curved and rotating.
Also, the mass distribution of the earth is uneven, so assuming the warping of space due to the earth to be the same as that of a point mass at its centre would also lead to errors (although I couldn't begin to estimate just what the scale of these errors would be).
The SN1987A neutrinos arrived hours before the light did; but we have a pretty good explanation for that. The neutrinos just go straight from the core collapse to our detector. But the photons have to make their way through the star's material; the photons are constantly being bounced around off the star's atoms (i.e. absorbed and re-emitted a bit later). In fact, it's estimated that for our Sun, photons take at least 10,000 years to escape from the core!
It's sure as hell not giving money back to any players. They don't give a flying about the players, they view the players as willing participants in illegal operations. I don't think the nationality ff the player really makes a difference.
I checked over a few of his bug reports, and was bemused to see the same old rubbish
"mplayer" - calloc() called with a 32-bit integer multiply "id Tech 4 engine" - memcpy(_,_, size - 6) , where 'size' is the size of a received packet and can be 5 bytes "Unreal server" - crash the server by sending an unexpected packet (the code does an assert() instead of just dropping the packet or whatever) "winamp" - craft a video with large dimensions, winamp does signed 16bit multiply of video height*width
I guess the mplayer one can be explained by free software people not having proper programming training, but iD etc. , you would think that they would hire programmers who think about the possible contents of the variables each time they write an arithmetic operation, especially when it's known that the value of the variable is read from a file or socket and could be anything.
It really is not difficult to check that size >= 6 (and then that size - 6 buffer_size) before writing "size - 6" in a memcpy.
I never understood assert() either, just seems like a recipe for disaster in production; it's not difficult to test conditions and invoke actual error handling and recovery
There is no page for AP Columbae.. how can that be?
NB. The WP search says, "Did you mean 'APA Columbae?'", but if you go for that option, it still finds no results. That bug has been around for a while in Google.
Well said. This idea 'smells right' to me. Some of the greatest breakthroughs in science have been things that seemed really obvious afterwards. You think to yourself, "I could have thought of that". And then you go and try to think of other 'obvious' things and can't think of anything:)
In my area, if you drive around town then a lot of places show up as "Unsecured wireless network" but if you try to access the Internet through it, it redirects all traffic to one particular location that wants you to put in a username/password (which you have to have paid for via some other channel previously).
The single photon wouldn't necessarily end the superposition, it would just entangle the tree with the environment (which it already was anyway).
Obviously it's absurd to suggest that humans cause collapse, but nobody has yet suggested a convincing enough explanation of what does cause collapse (or if collapse even happens at all), so I don't think the tree is dead just yet:)
Slashdot Mirror
20% of physics students, at this university level, thought that humanity had traveled beyond the Moon? And some thought that we routinely use the shuttle to travel to the moon...
That's a lot easier to stomach than the fact that 75% of Americans with postgraduate degrees (and 84% overall) believe that a mythical being was involved in created humanity
(source)
Intergalactic travel doesn't seem feasible, the timescales are just too big. But what about this galaxy?
I'd tend to think that the fact we haven't encountered intragalactic travellers lends weight to the hypothesis that we are the most advanced life form yet in this galaxy. (Bayesian reasoning!)
We can probably colonize the galaxy within a few million years, which is nothing on a cosmological timescale.
Even if these neutrinos are proven to be FTL, it doesn't mean the barrier was broken: another explanation would be that all neutrinos are FTL. They stay on the other side of the barrier their whole life!
Sounds like ORBS all over again..
Here's what these people seem to say.
When it comes to piracy - "ISPs shouldn't be policing the internet!"
When it comes to spam - "ISPs should be policing the internet!"
Well, the test is whether you can send a signal for it. Currently our detectors pick up something like 1 in 10^12 of neutrinos that pass through it.
Because the mass is so small. I believe that current estimates of the neutrino masses is small enough that it might not produce any observable difference in travel time across the observable universe
In whose reference frame though? In our frame, the lifetime of a moving particle appears longer if the particle is moving faster. There is no such thing as the 'lifetime of a charged pion' without also specifying its speed relative to yours.
My first thought on reading this article was that they had not taken into account "relativistic effects", i.e. they had assumed Euclidean geometry in their calculations, instead of Einsteinian. For example, how do you measure the 732km? If you take Cartesian coordinates in Euclidean 3-space then you get the wrong answer, because space is curved (GR) and the distance depends on the relative motion of the measurer (SR) -- who will be moving at a different velocity relative to each end of the track , since the earth is curved and rotating.
Also, the mass distribution of the earth is uneven, so assuming the warping of space due to the earth to be the same as that of a point mass at its centre would also lead to errors (although I couldn't begin to estimate just what the scale of these errors would be).
The SN1987A neutrinos arrived hours before the light did; but we have a pretty good explanation for that. The neutrinos just go straight from the core collapse to our detector. But the photons have to make their way through the star's material; the photons are constantly being bounced around off the star's atoms (i.e. absorbed and re-emitted a bit later). In fact, it's estimated that for our Sun, photons take at least 10,000 years to escape from the core!
It's sure as hell not giving money back to any players. They don't give a flying about the players, they view the players as willing participants in illegal operations. I don't think the nationality ff the player really makes a difference.
One time the feds set up a racket to rip off US players and used the funds to buy weapons (with no money taken off the actual illegal casino), http://odenton.patch.com/articles/county-police-net-470000-in-online-gambling-seizure
Siemens always left me with a bad taste in my mouth
We do have a pretty high ratio of dammable rivers : population
There's a video response where the guy has edited it to look smoother and clearer:
http://www.youtube.com/watch?v=PdDEpC0uHWI&feature=watch_response
I checked over a few of his bug reports, and was bemused to see the same old rubbish
"mplayer" - calloc() called with a 32-bit integer multiply
"id Tech 4 engine" - memcpy(_,_, size - 6) , where 'size' is the size of a received packet and can be 5 bytes
"Unreal server" - crash the server by sending an unexpected packet (the code does an assert() instead of just dropping the packet or whatever)
"winamp" - craft a video with large dimensions, winamp does signed 16bit multiply of video height*width
I guess the mplayer one can be explained by free software people not having proper programming training, but iD etc. , you would think that they would hire programmers who think about the possible contents of the variables each time they write an arithmetic operation, especially when it's known that the value of the variable is read from a file or socket and could be anything.
It really is not difficult to check that size >= 6 (and then that size - 6 buffer_size) before writing "size - 6" in a memcpy.
I never understood assert() either, just seems like a recipe for disaster in production; it's not difficult to test conditions and invoke actual error handling and recovery
What should the US be doing instead? I'm being serious.
STOP INVADING FOREIGN COUNTRIES
http://en.wikipedia.org/wiki/US_invasions
Start saying "1st of September" like the rest of the world does..
You haven't heard of '2 girls 1 cup' ?
Huh? The picture in wikipedia you linked looks like a pizza. A fast-food pizza is just as much a pizza as a McDonald's burger is a burger
There is no page for AP Columbae .. how can that be?
NB. The WP search says, "Did you mean 'APA Columbae?'", but if you go for that option, it still finds no results. That bug has been around for a while in Google.
I guess you didn't actually read the linked paper.. the paper itself explicitly does claim to disprove the Verlinde theory of emergent gravity
Well said. This idea 'smells right' to me. Some of the greatest breakthroughs in science have been things that seemed really obvious afterwards. You think to yourself, "I could have thought of that". And then you go and try to think of other 'obvious' things and can't think of anything :)
(what happens in a car crash -- call out the hazmat team!)
8 grams of thorium (whose natural radiation doesn't even penetrate human skin, according to WP) is far less hazardous than a gasoline fire
Come on , this is complete rubbish___8^)_#;3,2,.3root>^$)(^(943hellomax0984)_))1..l2l2_}[[}{
In my area, if you drive around town then a lot of places show up as "Unsecured wireless network" but if you try to access the Internet through it, it redirects all traffic to one particular location that wants you to put in a username/password (which you have to have paid for via some other channel previously).
The single photon wouldn't necessarily end the superposition, it would just entangle the tree with the environment (which it already was anyway).
Obviously it's absurd to suggest that humans cause collapse, but nobody has yet suggested a convincing enough explanation of what does cause collapse (or if collapse even happens at all), so I don't think the tree is dead just yet :)