Tacking is, theoretically, possible, however consider the following:
All the wind is coming from one central point.
Your sail is *huge*, and not rigidly supported. In order to tack, you need to be able to hold a sail at 45 degrees to the wind, while holding your vessel pointing towards the wind, with a predisposition to move in that direction (supplied by the hull/daggerboard) which, while feasibly possible with a solar sail, would be an engineering feat, to say the very least.
The interesting question is, how about a wireless receiver?
If it's possible to create a chip this small, would it be possible to embed enough electronics in a piece of paper, while keeping it still flexible, to power a polymer based display, with data perhaps remotely recieved?
This sounds rather like core memory, which was abandoned rather a long while ago, due to storage devices vibrating accros rooms. Obviously, the new devices are a lot smaller, so the vibrations will be equally smaller, but surely still damaging to the hardware.
On a slightly unrelated note, I remember a story I heard of an old stack of 20" platters which used to walk across the room when under heavy load, and unplug themselves!
Then vulnerability notifications regarding vulnerable vulnerability notifications won't get out, leading to more vulnerabilities in the vulnerability notification service, leading to more false vulnerabilities, causing vulnerabilities to be vulnerable?
It is commonly accepted that the moon was formed by a cataclysmic collision between the earth and a planetoid, however this is not responsible for the convection currents in the earth. The Earth has never had anything other than a liquid state since its creation, which has been primarily maintained by the decay of lithium isotopes (I believe, it's amazing how fast you forget a degree after you graduate). Convection currents arise in any system where there is heat, and the possibility of a moving medium.
The core of the earth is primarily iron, as all fusion chains do, as you correctly state, end in iron, however the heavier elements (Pu,U,etc.) decay to lighter elements.
b) A major collision is in no way necessary, sorry.
c) What you've written about gravitational stress is correct - tidal forces (difference in pull on various parts of planet due to varying radial distance from Saturn) cause the entire planet to be mildly deformed - think about tides on earth - if the sun, which is millions of miles away, can pull our water around (and the entire earth, a little, actually), think how magnified the forces must be that much closer to a massive body. This is the primary mechanism for liquidity and internal energy in any planetary body.
d) Fission is likely in any sufficiently dense object. Due to the great heat in the core, denser elements (such as uranium, plutonium, other radioactive elements) will sink to the bottom, where they will reach critical masses and fiss. In addition, fusion is likely, because electron degeneracy can be overcome in planetary cores.
e) If the core is ferrous, there will be a magnetic field. This will result in a 'dynamo' effect, causing further heating.
Actually, it probably isn't geologically inactive at all. It's trapped in the gravity well of an extremely massive planet, so it's likely that there are some considerable tidal effects (i could work it out, but can't be bothered right now - how far is Titan from the Roche Limit?) which would result in the 'massaging' of the planet's interior. This would result in increased internal energy and activity, and could result in vulcanism, perhaps under the ice (which is what has given rise to speculation about thermal vents).
For instance, Io, which is very near the Roche limit (point at which an object is torn apart by tidal forces) of Jupiter is extremely active due to these tidal forces.
Son??? What have I told you about disclosing our uber sekrit evil world domination plans? I for one, welcome our... selves. Now go to bed. No milk and cookies for 20 minutes for you! Shame!
I have a 1950s bifold leather wallet, used to be my dads - I use it for day to day spending.
I also have a moneyclip, which I use when I'm going out, and generally just take a few hundred quid in it, so I don't spend too much. At the moment, I have about £11,000 in it - I'm about to go buy a car, and I prefer to pay cash (don't want phone calls going 'so, you bought a car, do you want to by x?').
40,000 lumens??? With that brightness, you'd probably melt the glass of the lens, and blind anyone in the room at the time. 40,000 lumens is **bright**.
I remember playing with something not dissimilar as a litestep pluging *many* years ago - it shrunk the desktop to a cube, and you could rotate to the new desktop.
What are you talking about? Do you have the slightest idea how exchange rates work? Just because you get fewer units of a currency for a number of units of your currency doesn't mean you suddenly have less money - it just means that you get 'more bang for your buck'. VAT in the UK runs at 17.5%, and as far as I can see, it's an extremely nebulous legal area as to whether they should be charging VAT at all, as you're paying for digital media, rather than a physical item...
VAT law in the UK is ugly, some things are zero-rated for VAT (cold food, books), and some things are VAT exempt (examples, anyone?)... There was a case a few years back when people first started charging for online services such as web design, and whether they should be charging VAT on the labour, or on the finished product... Needless to say, it got messy... Anyway, not entirely sure where I'm going with this, so I'll shut up.
I wonder how games oriented around the govern^H^H^H^H^H^Hterminator will be rated.... This entire system is nothing new - it's been like this in europe a long while with ESRB ratings... You can't buy a game if you're underage, much like trying to rent porno. Not that I'd know. erm....
Slashdot Mirror
Tacking is, theoretically, possible, however consider the following:
All the wind is coming from one central point.
Your sail is *huge*, and not rigidly supported. In order to tack, you need to be able to hold a sail at 45 degrees to the wind, while holding your vessel pointing towards the wind, with a predisposition to move in that direction (supplied by the hull/daggerboard) which, while feasibly possible with a solar sail, would be an engineering feat, to say the very least.
The interesting question is, how about a wireless receiver?
If it's possible to create a chip this small, would it be possible to embed enough electronics in a piece of paper, while keeping it still flexible, to power a polymer based display, with data perhaps remotely recieved?
I wonder whether he is well versed in the 'art of cable fond^H^Hlding'!
This sounds rather like core memory, which was abandoned rather a long while ago, due to storage devices vibrating accros rooms. Obviously, the new devices are a lot smaller, so the vibrations will be equally smaller, but surely still damaging to the hardware.
On a slightly unrelated note, I remember a story I heard of an old stack of 20" platters which used to walk across the room when under heavy load, and unplug themselves!
In Soviet Russia, YOU don't recognize hardware?
Then vulnerability notifications regarding vulnerable vulnerability notifications won't get out, leading to more vulnerabilities in the vulnerability notification service, leading to more false vulnerabilities, causing vulnerabilities to be vulnerable?
No no no...
In vulnerability, Soviet Russia Accesses YOU!
It is commonly accepted that the moon was formed by a cataclysmic collision between the earth and a planetoid, however this is not responsible for the convection currents in the earth. The Earth has never had anything other than a liquid state since its creation, which has been primarily maintained by the decay of lithium isotopes (I believe, it's amazing how fast you forget a degree after you graduate). Convection currents arise in any system where there is heat, and the possibility of a moving medium.
The core of the earth is primarily iron, as all fusion chains do, as you correctly state, end in iron, however the heavier elements (Pu,U,etc.) decay to lighter elements.
a) Titan is a moon of Saturn
b) A major collision is in no way necessary, sorry.
c) What you've written about gravitational stress is correct - tidal forces (difference in pull on various parts of planet due to varying radial distance from Saturn) cause the entire planet to be mildly deformed - think about tides on earth - if the sun, which is millions of miles away, can pull our water around (and the entire earth, a little, actually), think how magnified the forces must be that much closer to a massive body. This is the primary mechanism for liquidity and internal energy in any planetary body.
d) Fission is likely in any sufficiently dense object. Due to the great heat in the core, denser elements (such as uranium, plutonium, other radioactive elements) will sink to the bottom, where they will reach critical masses and fiss. In addition, fusion is likely, because electron degeneracy can be overcome in planetary cores.
e) If the core is ferrous, there will be a magnetic field. This will result in a 'dynamo' effect, causing further heating.
Actually, it probably isn't geologically inactive at all. It's trapped in the gravity well of an extremely massive planet, so it's likely that there are some considerable tidal effects (i could work it out, but can't be bothered right now - how far is Titan from the Roche Limit?) which would result in the 'massaging' of the planet's interior. This would result in increased internal energy and activity, and could result in vulcanism, perhaps under the ice (which is what has given rise to speculation about thermal vents).
For instance, Io, which is very near the Roche limit (point at which an object is torn apart by tidal forces) of Jupiter is extremely active due to these tidal forces.
Son??? What have I told you about disclosing our uber sekrit evil world domination plans? I for one, welcome our... selves. Now go to bed. No milk and cookies for 20 minutes for you! Shame!
welcome our giant lion-slaying ape overlords!
Also, in soviet russia, giant ape discovers YOU!
The X-Prize is irrelevant and unimportant! Incidentally, wikipedia is covering it well. They've as good as won it.
Wikipedia is reporting well on this here. Shame /. seems incapable.
They've hit 112.2km unofficially - why the hell is no-one reporting this or interested? They've won the bloody X-Prize!!!!
Particularly so - spaceshipone is about to win the X-Prize, and no story!!!
I have a 1950s bifold leather wallet, used to be my dads - I use it for day to day spending.
I also have a moneyclip, which I use when I'm going out, and generally just take a few hundred quid in it, so I don't spend too much. At the moment, I have about £11,000 in it - I'm about to go buy a car, and I prefer to pay cash (don't want phone calls going 'so, you bought a car, do you want to by x?').
40,000 lumens??? With that brightness, you'd probably melt the glass of the lens, and blind anyone in the room at the time. 40,000 lumens is **bright**.
I remember playing with something not dissimilar as a litestep pluging *many* years ago - it shrunk the desktop to a cube, and you could rotate to the new desktop.
The cat was dead, and the poster was torn...
He went to my school, in britain, King's Canterbury. He's quite definitely british. Unless americans suddenly have public school accents?
What are you talking about? Do you have the slightest idea how exchange rates work? Just because you get fewer units of a currency for a number of units of your currency doesn't mean you suddenly have less money - it just means that you get 'more bang for your buck'. VAT in the UK runs at 17.5%, and as far as I can see, it's an extremely nebulous legal area as to whether they should be charging VAT at all, as you're paying for digital media, rather than a physical item...
VAT law in the UK is ugly, some things are zero-rated for VAT (cold food, books), and some things are VAT exempt (examples, anyone?)... There was a case a few years back when people first started charging for online services such as web design, and whether they should be charging VAT on the labour, or on the finished product... Needless to say, it got messy... Anyway, not entirely sure where I'm going with this, so I'll shut up.
My first screen name as a kid was skywalkr42. odd.
I wonder how games oriented around the govern^H^H^H^H^H^Hterminator will be rated.... This entire system is nothing new - it's been like this in europe a long while with ESRB ratings... You can't buy a game if you're underage, much like trying to rent porno. Not that I'd know. erm....
10,000,000 is a terribly exciting number, you know.... Actually, hang on, no it isn't.
Actually, maybe he should.