Forget that old theory
Looks like we need DARKER Energy.
83 posts • joined 10 Sep 2012
Looks like we need DARKER Energy.
And as such is capable of producing free energy forever. When allowed to freely accelerate on a wheel, there comes a point where the kinetic energy (quadratic with time) exceeds the total input energy (linear with time). Knock yourselves out. Throw away your coal and nuclear reactors and stop fracking.
Or it doesn't work and what's seen is experimental artifact.
We are going about this space business entirely the wrong way. The key to opening up space is cheap launches, and rockets (even reusable ones) don't cut it - only two technologies do: StarTram and Skylon. Once up there, the DEEP-IN system will allow us to weave a web of light around the solar system for almost-fuelless propulsion around the place in record time. That is the vision to which we should aspire.
There, now you have three new terms to Google.
like the eponymous Alan Shepard, it just goes up, and then down. Oingo Boingo. We did this in the early sixties. It's boring.
Con job. Gravy train. Next!
If you licked Charon, would your tongue stick to it?
Hopefully the grand LIGO success will cause a newly-formed Yank committee to rejoin eLISA and make it LISA again, with originally-designed full capability. And to accelerate that ridiculously far-future deadline to something much sooner. LISA will be even more awesome than LIGO.
Rumours are also swirling that gravitational waves taste like pork rinds
A fiddling Nero moment. This to allow us to bear witness to the final demise of a once-great company which has lost its way. Way to go Carly and Meg.
What Tech Support was always meant to be
That new 3D tattoo had seemed like a good idea.
The usual, run-of-the-mill bureaucratic clusterfuck. Colour us Not Surprised.
I wonder what she'll do about curtains?
For an empty box the colour of puke.
The Golgafrinchans really could have used her to declare leaves the default currency and help with defoliating the forests. Or to have helped with topping up the bathwater.
Waste of protein. Next!
when you lie to me
As an electronics engineer, I wouldn't design it anything like that. Chiefly, I would not allow any communications (wifi, LAN, internet, bluetooth) with the box while voting is going on. Each box is preloaded with the registration list - a list of social security numbers pertinent to the locale - and a vote consists of
a) self identification via SS number
b) the vote itself
When voting is complete, voting data is extracted via a USB port using encrypted protocols.
That's not 100% tamper-proof, but it's pretty good.
There is no need for a complex OS. The functions described can all be done with an extremely primitive microprocessor and some flash memory.
And on a political note, dissatisfaction with all of the candidates should be available for a vote via a choice labelled "None of the above". This carries more punch than simply not voting. It means you took the trouble to point out that all the candidates are shite.
Context, context. If there's no tx/rx at Alpha Centauri, there's no point in having one here. But if there is one there, it means we can get there and have already done it. Which means 550 AU is "local" for us already.
My main point is that such comms cannot be detected by the usual SETI methods, and as such assures a high degree of privacy. If that's the aliens' cup of tea, you'll never know, and SETI is a waste of effort.
But it does give a sensible answer to the Fermi question, even in the face of the ongoing blizzard of new exoplanet discoveries
Conventional wisdom about interstellar comms gets well thumped when a civilisation starts using Claudio Maccone's gravity lens system. The idea is to use one's own star as a giant focuser of radio and light waves. Great telescope, great radio antenna. With about 10 watts we could establish comms with the Alpha Centauri system and get 5 by 9 clarity and good bandwidth. Hard to believe, but that's what the maths says. Of course, there is a bit of a lag.
Our own grav focus begins at about 550 AU out. We'd place a transceiver (nuclear thermal powered I assume) on the opposite side of Sol to the target star system. At the target system we'd do the same. So we end up with a straight line that links remote Tx/Rx - remote star - Sol - local Tx/Rx.
The chief impediment we ourselves currently face is the ability to make such long trips quickly. Once we have that, we could set up radio comms all over the place.
But to the question about aliens. If they are using this mode of communication, there's not a chance in hell that we could detect it.
There's a heavy piece of irony here, as Maccone is chief of SETI.
That's SIR Arthur C. Clarke to you, minion
Why do they keep torturing us with promises of a quantum computer? It's downright sadistic.
Hear, hear - kudos to the author. It's a massively complex subject and this is yet another baby step, and as such was heroically described.
Launch costs will have to come down below $200/Kg for this to be viable.
Thinking Big Picture like this will generate new industries that are of direct benefit to all of us.
In the meantime, aneutronic fusion is a desirable near-future goal - perhaps Focus Fusion will win the day.
Well, first of all to that despicable little NSA shit - go boil your head.
These people have lost touch with reality. I wouldn't normally be concerned, except that they are doing it on our tax dollars to the tune of billions, and are seemingly immune from being axed as an institution. Where are the politicians with the balls to toss the NSA on the garbage heap? We did fine without them before. NASA or the health care system could use that money.
The thesis of this idiot appears to be that if there's data that they cannot snoop, then it's a terrorist network. That way lies a 1984 society. It is a price most of us are unwilling to pay.
A web of solar-powered lasers for lightsail propulsion would be good. Crisscrossing the solar system. First Moon <-> Earth and then Mars <-> Earth. Can be pretty fast, and you don't need to carry tons of fuel, so you accelerate faster.
The elephant in the room is the inescapable fact, true for all propellantless drive ideas, that it is not only a perpetual motion machine, but that it can be made to generate free energy forever. This can be seen using very basic school physics. Constant input power generates constant thrust (it is claimed) and thus we get constant acceleration. Thus total input energy increases linearly with time, but output (kinetic) energy increases quadratically with time. It should now be clear that if you put this device on a wheel, there exists a breakeven speed above which free energy can be continuously obtained.
Therefore Shawyer is talking out of his arse when he says that the stored energy drops as the machine goes faster. Physics demands there be no preferred frame of reference, so pray tell, Roger old chap, how the cavity knows its velocity relative to its original rest frame?
I believe the thrust measurement is an artifact of induced patch charges. The only way to truly settle the debate is to do a space-based test.
If the Germans were serious, they'd toss out the American military bases. I know the people don't want them.
Iff a > b also
I get the LSD bit...
The sun uses nuclear fusion and puts out 10^26 watts continuously. Just a hint.
Phil Plait of Bad Astronomy fame has posted an animated gif of the left and right NAVCAM views, showing that it's in one and not the other. Normally that would be the end of the argument, but not necessarily in this case. That's because we're looking at irregular terrain and the occlusion details differ between left and right cameras.
There's also the issue of simultaneity between the two cameras; then the left camera showing nothing would mean that the flash only began in time for the right camera to grab it.
Either or both of these caveats argue for Curiosity to live up to her name, and to get the hell over there and check it out. But this is NASA, so they won't.
I wouldn't put it past Microshaft to deliberately leak something damaging to XP into the wild.
Coz it surfed on FTL spacetime. Whheeeeeeeeeee!
OK - now we know that FTL spacetime expansion is real, it's time to roll our sleeves up and build that space drive!
Pass the hacksaw, Mabel...and careful with that axe, Eugene.
And this is why moonshine can be dangerous
What if there's nothing there except turtles all the way down...
A way overpaid pompous arse, that Standen. Boot him out.
Could a new video standard, superior to HEVC, be in the offing? If so, I'll work on it.
The NSA have demonstrated beyond any shadow of a doubt that they are incapable of safeguarding the national trust - not to mention international good will. They should be disbanded forthwith. We did without them before. Accountability is a tenet of democratic government, and they spit on the idea.
Rockets are so 1950s, someone said recently - and that's true. The going rate for launch-to-LEO is between $8K/Kg and $15K/Kg - say $12K/Kg average. The sad fact is that right now we have the tech to reduce that figure to less than $5/Kg and launch multiple times per day without destroying any hardware in the process. It's called a railgun, and for my money, it's the only worthy game in town. The ideal location is equatorial and uses a few Km of track for gee-hardened cargo launches, or over 100 Km for more sedate passenger launches. The US Airforce and Navy have been messing with this, but they are really only interested in making ballistic weapons, so they use insane energy densities - about 100x more than a commercial launch outfit needs. The principle is sound, and lacks only investment. Ecuador is a good spot - there are flat stretches leading to useful mountains to angle the launch correctly.
Too late. NSA hacked Americium-241 a decade ago. They found a backdoor into the weak force.
There's a ton of bollocks in that article. For one thing, in a lot less than a million years from now we'll be able to incrementally bump out Earth's orbit as far as we like. Or two hundred million? Makes no difference. That resets the clock to 6 billion years. Everyone relax :).
But there's something else. Neglecting other catastrophes, an entire galaxy is headed our way at breakneck speed - Andromeda. ETA estimated at around 4 billion years
We may need to get galactic before then.
I read the report and think that it has a good chance of success. It certainly puts the state-approved scheme to absolute shame, being cheaper to build (10x), faster (5x), cheaper ticket price (5x), safer, more energy-efficient, less environmentally demanding, quicker to build and quicker to board. I hope there are sufficient red faces in Sacramento this week (assuming that politicians are capable of experiencing shame) to kick them into action on scrapping that boondoggle they recently approved, which would end up costing not $68B, but more likely over $100B.
The aerodynamic control and the thermal issues may be problematic, but I see no technical showstoppers here. So let's get this show on the road!
Americans should petition their congresscritters to disband the NSA
What can evolve in a billion years? On Earth, quite a lot. On Mars, maybe more.
I've been using a Logitech Trackman Marble for what seems like well over a decade, and don't want to switch. The thumb is the strongest digit, so natural for movement. It fits to the hand perfectly. And no scraping over a surface either - I detest scrapies.
Looks like the way forward is HEVC-DASH for mobile and thus for everything else.
The Chinese tried to counter H.264 (AVC) licensing with their own "AVS", which was basically a clone (what a surprise), and it fell on its arse. Earlier, Microsoft had tried the same thing with their own "VC-1" (also almost a clone) which fell on its arse. VP8 did too, as the article says. I therefore predict that VC-2, AVS2 and VP9 will all fall on their arses.
I would say a little chat with their mullah is called for here.
or a CGI-resurrected Patrick Moore discussing toad sexing. The possibilities with dead celebrities are endless