The photons hit your eye at the speed of light no matter how fast you are going. That is the basic revelation of relativity. The speed of light is constant no matter what your reference frame. As for photons acting as a shield for further photons, this can't happen either, photons do not interact with other photons in any way, they just pass through one another.
It was saying that holograms in empty space are impossible. Which is likely true. Basically, you will need something in the line of vision from your eye to the hologram. the something can be anywhere on the line, a screen in front, a spinning disk where the hologram is or a real-time animated diffraction grating behind, but you need something there, you can't just project a hologram to an arbitrary location.
It is the same on x86_64. C ints are 32 bits. just pointers are 64 bits and your long longs are implemented in hardware so are faster. There is no need to make the default integer size bigger, it would just double the memory usage for no reason. 64 bit cpus are designed to do 32 bit math fast too for this reason.
I should mention that I AM a touch typist with the touchstream. it is designed for touch typing. Since it can detect all your fingers at once, it actually can tell the difference between dropping all fingers to rest or recenter the hand and just touching with a single finger because you intend a keystroke. it has little divits under the home row, so it is not hard to stay in location.
Another thing helping touch typists is that you never need to move your fingers away from home far for anything, every key that you would normally have to move away from home on a normal keyboard actually has a gesture right over home row (the mouse too). One could get by with just the letter keys, I think they silkscreen on the outlyers just so hunt-n-peck typists won't be totally lost, but an experienced touchstreamer never ventures there.
This is a common misconception, that there is no tactile feedback, probably caused by people used to membrane keyboards where pressure is needed to cause a key to register and you have no feedback on when you have applied the right amount of presure.
This is not the case with the touchstream, since it used e-field sensing, pressure does not matter, it can even detect your hands when they arn't even touching the surface of the keyboard. The tactile feedback is your fingertip touching the surface of the keyboard, if you feel ANYTHING the key has registered. there is an exact correspondence between the 'touch' and the 'keypress'. It is really great tactile feedback actually, you only need to feel for one thing, the touch and not a change in resistance like with normal keyboards. It is impossible for it not to register a keystroke, once you are used to it, your hands sort of glide over the surface and you lightly, very lightly just tap out what you want.
It is for some reason really difficult to convince people of this when they sit down, you see them mashing their fingers in because they are used to pressure based systems.
I have one, you can clean the entire surface with windex or lysol. It uses E-field sensing so does not have the drawbacks of membrane keyboards and in fact has many advantages over regular keyboards.
A whole usb port can only source about 500mA across all connected devices at 5V. This is not a whole lot of power, it would take forever to completely charge a li-ion battery off of that and require some interesting circuitry. It is enough to top-off a battery, or charge smaller ones. but cell-phones use a lot of power. as power consumption on phones goes down, we might see full charging from USB more often. But it will take some engineering to do right.
There are already a huge huge number of people working on superconductors, in industry and academia. nasa throwing a few more dollars at it isn't going to make a difference. A room temperature, or even heck, a slightly higher temperature superconductor would be a goldmine. If we actually invent them, I am sure NASA will find tons of uses, but right now we don't even know if they are possible.
However, even if we had superconductors, there is still the matter of doing actual work. lifting an object from the earths surface to space takes actual work and a lot of energy, even being perfectly efficient won't change that.
Heat does not generate electricity or any sort of useful work.
A heat differential does. You need a hot place AND a cold place and piggybacking on the heats tendancy to want to move from hot to cold is where you get energy from. The bigger the difference in temperatures, the better your ability to extract useful work from it.
This is why the simple heat engine model won't work. space is a great insulator, you would heat up, but have no where to dispose of the heat to create your cold sink. Without air as a medium, you have to rely on radiant energy to dissipate heat, which isn't going to be easy.
Solar panels however are a good idea, it is likely all the entries into this contest will use them because they work now and are well understood. I am not sure why you think you are taking crazy pills, it is well known wireless power works now. A space elevator is mainly a matter of scale, building something bigger and stronger than we ever have before.
The problem is the english language, which has one word for two different things. We should just adopt the most common terms from other languages and use those
libre - free as in speech gratis - free as in beer
Of course they did. It is expected it will be tens of years before they have synthetic muscles strong enough to beat a human. What will be interesting is when they can beat a chimp. A human adult has a grip strength of about 210 pounds, while an average chimpanzee has one of 1260!
No need for a dictionary attack. Just take your own valid card with an encrypted PIN you know (because it is yours) and replace the account number with someone elses. Then use the card and type in your PIN and extract cash from the other account. Newer ATMs will hash the account number along with the PIN making this not work, but not everywhere.
No. nothing can modify what you can do with your code. (except a full copyright transfer or independent contracts)
The GPL cannot infect other code, if you accidentally incorperate GPLed code into a project, the worst that happens is you have to stop distributing the GPLed portion of the code. (your own code is UNAFFECTED)
This reminds me of the story of how the automatic telephone switchboard was invented. An undertaker was convinced that the telephone operator (who was the wife of one of his competitors) was routing calls to her husband rather than him when clients asked for him.
His response was to invent the automated switchboard to keep human operators who were prone to bribery or bias out of the loop.
see Almon Strowger for more information. Not much has changed, except now we can program computers to carry out the dirty work.
A rip isn't a problem. since the suits are using mechanical pressure, rather than air pressure, a rip is not threatening (as long as your air supply around your head is safe). You will end up with a horrible bruise from your cappelaries bursting at the point of the rip, but you would survive.
Protecting your current credit cards doesn't prevent identity theft, it prevents plain old theft:)
Identity theft is when someone takes out credit in your name.
And a debit card is a very bad thing.
when someone steals your credit card and uses it, they are not stealing from you, they are stealing from the credit card company. you cannot (legally) be held responsible for the charges they accrue. However with a debit card, they are actually stealing from your account directly, you have no recourse but to take the hit, much as if someone stole your car or wallet.
Of course, many debit card providers will provide guarentees that you won't be held responsible, but you are trusting in their good will. with credit cards you cannot even legally be held responsible for fraudulent charges no matter what the creditors policy says.
The trick to enjoying CSI is to think of it as taking place in the not too distant future. Right now, DNA tests take a long time, but they are much faster than a few years ago and work is being done to make them much faster still. Pretty much everything on the show is current technology made faster/more accurate, a reasonable extrapolation for the future of any modern technology.
We are already doing a good job of replacing and improving all the software that made it. How about taking some good ideas from the past which didn't quite make it in the commercial space and giving them new life as OSS?
frame dragging was predicted in the early 1900s by the various equations that make up relativity. if we were to observe that it wasn't happening and some other effect were causing it, then that would be very odd indeed, as that would imply that all the equations which have been right in so many other ways are wrong in this one little regard making things much much more complicated.
The simplest possible explanation for this is frame dragging.
Also, the gravity effects you mention would not affect the sattelite in this way, a downward pull has no effect on the horizontal motion of a satellite and the moon and suns gravity can easily be accounted for. Also, imagine the root cause was the moon and suns gravity, then that would imply there is something fundamentally new about the gravitational laws we do not yet understand, which again is very interesting and much more complicated than frame dragging.
The point is not big weapons, but small ones. A nuke is more than powerful enough, but the problem is they are too powerful. If you want an explosion somewhere between the largest chemical one and the smallest nuclear one (which is a pretty big range) then anti-matter is a nice canidate.
Lisp's advantages are in a large part due to the general advantages of functional programming. Modern functional languages such as Ocaml or Haskell, have all those advantages plus 30 years or so of advances in type theory under their belt.
One of the main advantages lisp has over languages such as haskell and ocaml is in self-modifying code, since in lisp, programs are data and it has dynamic typing. This feature probably just has not been useful in recent tasks.
The winning place entry, used haskell to implement a domain specific langugae via a monadic combinator library, something Haskell excels at, so they were definitly using the languages strengths.
Programming Haskell is truly a transcendent experience.
Slashdot Mirror
The photons hit your eye at the speed of light no matter how fast you are going. That is the basic revelation of relativity. The speed of light is constant no matter what your reference frame. As for photons acting as a shield for further photons, this can't happen either, photons do not interact with other photons in any way, they just pass through one another.
It was saying that holograms in empty space are impossible. Which is likely true. Basically, you will need something in the line of vision from your eye to the hologram. the something can be anywhere on the line, a screen in front, a spinning disk where the hologram is or a real-time animated diffraction grating behind, but you need something there, you can't just project a hologram to an arbitrary location.
It is the same on x86_64. C ints are 32 bits. just pointers are 64 bits and your long longs are implemented in hardware so are faster. There is no need to make the default integer size bigger, it would just double the memory usage for no reason. 64 bit cpus are designed to do 32 bit math fast too for this reason.
Why is there no "Didn't read the article" moderation option? It seems like it would be so useful in many circumstances.
I should mention that I AM a touch typist with the touchstream. it is designed for touch typing. Since it can detect all your fingers at once, it actually can tell the difference between dropping all fingers to rest or recenter the hand and just touching with a single finger because you intend a keystroke. it has little divits under the home row, so it is not hard to stay in location.
Another thing helping touch typists is that you never need to move your fingers away from home far for anything, every key that you would normally have to move away from home on a normal keyboard actually has a gesture right over home row (the mouse too). One could get by with just the letter keys, I think they silkscreen on the outlyers just so hunt-n-peck typists won't be totally lost, but an experienced touchstreamer never ventures there.
This is a common misconception, that there is no tactile feedback, probably caused by people used to membrane keyboards where pressure is needed to cause a key to register and you have no feedback on when you have applied the right amount of presure.
This is not the case with the touchstream, since it used e-field sensing, pressure does not matter, it can even detect your hands when they arn't even touching the surface of the keyboard. The tactile feedback is your fingertip touching the surface of the keyboard, if you feel ANYTHING the key has registered. there is an exact correspondence between the 'touch' and the 'keypress'. It is really great tactile feedback actually, you only need to feel for one thing, the touch and not a change in resistance like with normal keyboards. It is impossible for it not to register a keystroke, once you are used to it, your hands sort of glide over the surface and you lightly, very lightly just tap out what you want.
It is for some reason really difficult to convince people of this when they sit down, you see them mashing their fingers in because they are used to pressure based systems.
http://fingerworks.com/
I have one, you can clean the entire surface with windex or lysol. It uses E-field sensing so does not have the drawbacks of membrane keyboards and in fact has many advantages over regular keyboards.
A whole usb port can only source about 500mA across all connected devices at 5V. This is not a whole lot of power, it would take forever to completely charge a li-ion battery off of that and require some interesting circuitry. It is enough to top-off a battery, or charge smaller ones. but cell-phones use a lot of power. as power consumption on phones goes down, we might see full charging from USB more often. But it will take some engineering to do right.
There are already a huge huge number of people working on superconductors, in industry and academia. nasa throwing a few more dollars at it isn't going to make a difference. A room temperature, or even heck, a slightly higher temperature superconductor would be a goldmine. If we actually invent them, I am sure NASA will find tons of uses, but right now we don't even know if they are possible.
However, even if we had superconductors, there is still the matter of doing actual work. lifting an object from the earths surface to space takes actual work and a lot of energy, even being perfectly efficient won't change that.
Heat does not generate electricity or any sort of useful work.
A heat differential does. You need a hot place AND a cold place and piggybacking on the heats tendancy to want to move from hot to cold is where you get energy from. The bigger the difference in temperatures, the better your ability to extract useful work from it.
This is why the simple heat engine model won't work. space is a great insulator, you would heat up, but have no where to dispose of the heat to create your cold sink. Without air as a medium, you have to rely on radiant energy to dissipate heat, which isn't going to be easy.
Solar panels however are a good idea, it is likely all the entries into this contest will use them because they work now and are well understood. I am not sure why you think you are taking crazy pills, it is well known wireless power works now. A space elevator is mainly a matter of scale, building something bigger and stronger than we ever have before.
The problem is the english language, which has one word for two different things. We should just adopt the most common terms from other languages and use those
libre - free as in speech
gratis - free as in beer
Don't forget the thousands made by me and others who looked at SCOs claims, saw they were shite and shorted SCOs stock. mmmm... free money.
Of course they did. It is expected it will be tens of years before they have synthetic muscles strong enough to beat a human. What will be interesting is when they can beat a chimp. A human adult has a grip strength of about 210 pounds, while an average chimpanzee has one of 1260!
No need for a dictionary attack. Just take your own valid card with an encrypted PIN you know (because it is yours) and replace the account number with someone elses. Then use the card and type in your PIN and extract cash from the other account. Newer ATMs will hash the account number along with the PIN making this not work, but not everywhere.
The correct solution is to switch to base 12. Then we get easy conversions with the english system plus a more convienient base.
How often do you have to take 5ths of something compared to takeing thirds, fourths, sixths or halfs?
No. nothing can modify what you can do with your code. (except a full copyright transfer or independent contracts)
The GPL cannot infect other code, if you accidentally incorperate GPLed code into a project, the worst that happens is you have to stop distributing the GPLed portion of the code. (your own code is UNAFFECTED)
This reminds me of the story of how the automatic telephone switchboard was invented. An undertaker was convinced that the telephone operator (who was the wife of one of his competitors) was routing calls to her husband rather than him when clients asked for him.
His response was to invent the automated switchboard to keep human operators who were prone to bribery or bias out of the loop.
see
Almon Strowger for more information. Not much has changed, except now we can program computers to carry out the dirty work.
A rip isn't a problem. since the suits are using mechanical pressure, rather than air pressure, a rip is not threatening (as long as your air supply around your head is safe). You will end up with a horrible bruise from your cappelaries bursting at the point of the rip, but you would survive.
Protecting your current credit cards doesn't prevent identity theft, it prevents plain old theft
Identity theft is when someone takes out credit in your name.
And a debit card is a very bad thing.
when someone steals your credit card and uses it, they are not stealing from you, they are stealing from the credit card company. you cannot (legally) be held responsible for the charges they accrue. However with a debit card, they are actually stealing from your account directly, you have no recourse but to take the hit, much as if someone stole your car or wallet.
Of course, many debit card providers will provide guarentees that you won't be held responsible, but you are trusting in their good will. with credit cards you cannot even legally be held responsible for fraudulent charges no matter what the creditors policy says.
The trick to enjoying CSI is to think of it as taking place in the not too distant future. Right now, DNA tests take a long time, but they are much faster than a few years ago and work is being done to make them much faster still. Pretty much everything on the show is current technology made faster/more accurate, a reasonable extrapolation for the future of any modern technology.
Lotus Improv.
We are already doing a good job of replacing and improving all the software that made it. How about taking some good ideas from the past which didn't quite make it in the commercial space and giving them new life as OSS?
Maxima (maxima.sf.net) is a great computer algebra system. Highly recommended.
Frame dragging IS the simpler explanation :)
frame dragging was predicted in the early 1900s by the various equations that make up relativity. if we were to observe that it wasn't happening and some other effect were causing it, then that would be very odd indeed, as that would imply that all the equations which have been right in so many other ways are wrong in this one little regard making things much much more complicated.
The simplest possible explanation for this is frame dragging.
Also, the gravity effects you mention would not affect the sattelite in this way, a downward pull has no effect on the horizontal motion of a satellite and the moon and suns gravity can easily be accounted for. Also, imagine the root cause was the moon and suns gravity, then that would imply there is something fundamentally new about the gravitational laws we do not yet understand, which again is very interesting and much more complicated than frame dragging.
The point is not big weapons, but small ones. A nuke is more than powerful enough, but the problem is they are too powerful. If you want an explosion somewhere between the largest chemical one and the smallest nuclear one (which is a pretty big range) then anti-matter is a nice canidate.
Lisp's advantages are in a large part due to the general advantages of functional programming. Modern functional languages such as Ocaml or Haskell, have all those advantages plus 30 years or so of advances in type theory under their belt.
One of the main advantages lisp has over languages such as haskell and ocaml is in self-modifying code, since in lisp, programs are data and it has dynamic typing. This feature probably just has not been useful in recent tasks.
The winning place entry, used haskell to implement a domain specific langugae via a monadic combinator library, something Haskell excels at, so they were definitly using the languages strengths.
Programming Haskell is truly a transcendent experience.