1424 posts • joined Wednesday 24th March 2010 19:26 GMT
"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
I rely on a complex 20 digit password for access to my SSH account.
BUT I also use a non-standard port and and only allow access to a very unusual username. Every bit helps even if it just hinders most of the automated probes
Java, Flash, Silverlight ..........
"executable bits and such won't apply to an Adobe vulnerability"
They will on my system 'cos there's no Adobe.
"330m* piece of (tight) string if I pull one end the other end doesn't move until a second later???"
Correct if that's the speed of sound in whatever medium.
That answers both questions.
(should be easy enough try with string - not sure about the neutron star rod)
"What if I pulled on the string at faster than the speed of sound in the string?" - I think you might snap the string.
Common sense or "gut feeling" is not always a good guide to reality. To some extent that's why we need mathematics. Try reading about chaos theory which doesn't deal with the very small like QM or the very fast/large like relativity but still provides some really weird and wonderful effects in the everyday world.
Sorry - shouldn't really call it chaos theory
Non-linear dynamics is better
"over major swaths of linux"
Well on my OpenSuse installations neither Firefox or Thunderbird will allow executables to run by just clicking and even if you save the file it's set as non-executable so you really have to have a death wish to run an unknown binary. It doesn't matter at all what the extension is.
It is possible to have FF etc set to run interpreted files if you really, really want to.
"oes not the string tied around Alice's wrist in Gran Sasso not tug"
Effect propagates at speed of sound in string or whatever material you use.
how do they know the starting time as these things are so hard to detect or have they got a fast gate in the beamline. No it can't be that as the little devils would just go through it. Must look it up
"go a bit funny in curved spacetime"
as does Mercury's orbit - which is not predicted by Newton's gravity but is by GR
"So time flows that way for you " or similar
As a scientist ...
and someone who writes LOTS of terrible code I generally agree.
I have however met some great programmers who were once scientists
If by that...
you mean a rotating system it has to have a considerable radius otherwise the force acting at head level is considerably different to foot level and can't be compensated for so blood pools in the legs.
Depends on how much you are buying but ~£4/L - this stuff is used all the time with superconducting magnets. Chemistry NMR instruments hold ~~ 100L
Incidently the LHC uses ~120000 kg or ~~ 650000L I believe.
On another point (although I wouldn't recommend trying this) a stream of liquid nitrogen droplets will bounce readily off the skin without harm due to the boiling liquid being insulated by a layer of gas. As the skin cools however then the problems start. We used to use these types of materials without gloves as any finding its way down a glove could easily produce a nasty burn.
"it will just take a long time to get there"
How long have you got ?
Even if you can manage 10000 km/sec it will take ~120 years and you'll need >5E18 joules to accelerate to that speed in even a 100 tonne ship
As far as I know depletion of ozone depends on ..
chlorine derived from CFCs.
The actual reaction is atomic chlorine + O3 -> chlorine monoxide and oxygen.
Unfortunately chlorine monoxide can react with oxygen atoms of which there are some in the upper atmosphere to regenerate chlorine atoms to perpetuate the cycle.
ClO + O -> O2 + Cl
A Non-fluorine containing material such as carbon tetrachloride is also an ozone destroyer.
I've not gone into the details of this ..
.. but I'd *guess* the patent is for the control of an application by gesture on a touchscreen NOT for the software to implement that. After all it could be by an ASIC or some other means.
Still thin-end of the wedge-ish