1655 posts • joined Wednesday 24th March 2010 19:26 GMT
It's more likely ...
they'll have already read HHGG and will turn up expecting Bournemouth ( or was it Eastbourne ?) to be 'one of the most exciting places in the galaxy'
"Except that neutrinos don't seem to be effected by gravity."
Why do you keep repeating this - there's no evidence whatsoever that it's true !
Even photons with no rest mass are affected by gravity as predicted by GR
I've just been in B&Q
and they had 50W equivalents on the shelf with 25 years printed on the packaging.
Mind I think they were @30GBP
I've just looked at the detector web-site. The detector stack is 25 m long ! so the transit time for a light speed particle would be about 80nS
I assume the detection events are found over the entire length and then averaged in some way
"only releasing it 3 hours later"
Photons interact STRONGLY with matter - that slows them down - that's why light travels slower than c in matter
"And since established theory forbids superluminal travel"
AFAIK it only forbids superluminal speeds* in a vacuum, but in anything else where light is traveling at less than c then these sort of effects (e.g. Cherenkov radiation) are seen.
* Yes, I know the theory only actually forbids reaching light speed not travelling faster
"tunnel through the c barrier "
My understanding of tunneling is that it can ONLY occur if the energy barrier is finite. It then becomes a question of what that means for a FTL transition
"ize and composition of a star 168,000 light years away "
Well try this - for our local star - on average it takes many,many years for a photon, once generated as a gamma ray, to escape from the sun due to the dense interactions in the core.
"It's about time boffins took this idea seriously."
There's no need to take this seriously - if life can evolve in such diverse conditions you'd basically have to look almost everywhere so why not leave it at that.
"Conservation laws are already gone #"
Particles created near black holes are effectively taking mass from the black hole which will eventually vanish ( if no matter replenishes the black hole ) This is exactly why micro black holes are thought to have a very short lifetime and hence if the LHC somehow managed to create any it wouldn't be a problem
It would be best ...
if they were standards compliant, clear and up-to-date - forget the eye-candy.
The 6502 was mostly designed by a Motorola team but they moved to MOS when Motorola didn't want the design. THE Motorola 8-bit was the 6809
How many more times...
"Five hundred years ago, everybody knew the Earth was flat"
Almost everyone who THOUGHT about it didn't think it was flat. Most people weren't bothered either way. Sailors and anyone living near the coast knew if wasn't flat, ships would slowly 'sink' below the horizon and then come back
"hat all the possible errors fell well short of 60 nanoseconds."
All the random errors. Doesn't say anything about systematic errors like the clocks and distances.
This latest experiment suggests that one possible systematic error is not the reason for the observed 'speed'
Re :"What about the poles? "
The apparent rotation of the earth would be zero as the satellite is intended for geostationary orbit.
It's intended for geostationary - in any case how else would it be able to point at a receiver array ?
I make it ~0.9c but I take your point. It does point out the difficulty ( I mean impossibilty ) of fuelling any type of ship intended for such speeds. Any fuel mass just becomes more mass to accelerate .... recurses !
"Do we *know* that matter...... "
Well of course we do - Dan Brown cleared that up years ago
As I said "it's still one very large number ( of targets) of which we are 1."
I assumed they may well send multiple probes it's just that the number of 'local targets' is enormous. I think probes doing 'grand tours' is rather far-fetched and in any case would take a long, long time.
Very good but
you should really acknowledge that the quote is from Hitchhikers
There may well be millions of 'advanced civilizations..
but space is BIG, VERY BIG.
Consider if there were 1 million advanced civilizations in the galaxy willing to send probes - they've got a choice of ~4e11 stars to send a probe to. OK they could rule out quite a lot but it's still one very large number of which we are 1. Plus the distance. So we'd be dependant on a civilization developing in our neighbourhood, wanting to send missions, choosing us amongst many, and the probe arriving, not malfunctioning and us spotting it.
"Since when was shale gas low carbon?"
Most of the energy comes from burning the hydrogen in methane.
A mole of carbon (12g) burning to CO2 (22.4L )emits ~350 kJ
A mole of methane (16g) burns to CO2 (22.4L) + 2H2O and gives ~900kJ
"Having just two operating systems available isn’t good for innovation!
And on the desktop ??
At 500 miles range ..
It's going to need some mechanism to steer it just to keep to the earth's curvature unless the ballistic arc just happens to match.
OK if it hits something solid like a building or tank but a thin-walled, unarmoured warship - it will punch a hole clean through unless it hits something with significant resistance/mass.
"Cant believe the difference in quality and speed"
Do you mean you can talk much faster ?
Trust and Microsoft - two words that you don't see together without Don't in front
Who on earth downvoted this ?
Well I'm using a Three 3G dongle (Huawei E367)
and after 2 months intermittent use in various parts of the UK I'm very impressed (and I've still got most of my data allowance left )
Works fine on both a Linux laptop and netbook.
"Note just under 19 cars require a MW of power"
I think you need to check your figures - at ~9 kW I make it 111 cars/MW - I think you might have divided by the six hour charge time which isn't relevant.
The power they require is ~1MW for 111 cars. The energy consumption is ~1MW.h for 19 cars if the charge time is 6 hrs
I can only add that our (UK) house which is moderately large and uses electric cooking averages a consumption over the year of 4 amps - any significant numbers of electric cars are going to swamp the grid with demand
"If you ever dragged a couch for the missus..."
That comment gives away the fact that you're not married. No self-respecting wife would accept a computer program's view when there's real work to be done
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