Nice, but the motion seems more complicated than just clicking. In my opinion the perfect input device should not have moving parts, just two microphones. Here's a description of a purely acoustic keyboard. http://nanoquimica.awardspace.com.nyud.net:8080/So undkey.htmLINK
The details are in the McGrady webpage, research section: No reference to results or calculations, seems like they're just getting started.
From the page:
Light metal hydrides such as AlH3 (5) and complexes like NaAlH4 (6) , whi ch contain a high percentage of hydrogen by weight, are attractive as on-board sources of H2 in vehicular applications.
Link:
http://v8nu74s71s31g374r7ssn017uloss3c1vr3s.unbf.c a/~smcgrady/research/index.html
A working prototype is nice, but it's only viable if the can manufacture the chips with a high yield. New processes have low yield, meaning a high percentage of the chips don't work.
the challenger was a sailboat carrying instruments. It didn't dive.
The bastiscaphe trieste, did though. You probably were thinking about this one.
http://en.wikipedia.org/wiki/Bathyscaphe_Trieste
I see. That would be too much to write in a wired article for the general public.
Your explanation makes it clear that the seawater compressibility shouldn't be neglected.
Since it's supposed to use little power, I wonder if this would be useful as a means of transporting goods. Would be slow though.
I'm working in a buoyancy related problem so I have to point this out.
From the full article: "When pressure compresses a hull in a traditional glider, it gains buoyancy and requires more energy to control."
If it's compressed, the volume shrinks, it gains density and loses buoyancy.
Well, I see what you mean with the problems with natural gas in the US. But sooner or later you have to expand the infrastructure, the same goes for the electrical grid.
All these new energy ideas are good, but true energy savings in transportation would take a re-thinking of housing and commuting patterns, which might take decades to happen, or a sustained large increase in gasoline prices.
If you lived really close to the stores, your friends and your workplace what do you need cars for?.
Compressed natural gas (mostly methane and low C alkanes) has been in use in Argentina for years, it's cheaper and cleaner than gasoline, the autonomy of compressed gas is lower but for city driving it doesn't matter, and cars can still use gasoline because the engine has only minor modifications.
This method seems to admit lower pressure in the tank, and might enable to store more gas without need of thick heavy steel was for containing it. Sounds like a good idea to me.
There are some subtleties in measuring things from an image.
Lenses distort images in a non-linear way, so just counting the pixels wouldn't be extremely accurate. One of the ways this can be improved is by calibration, basically taking a picture of a bunch of dots in a square array that covers the whole field of view, and do some math. Hey iPhotomeasure people, if you need a consultant for version 2, "with improved calibration" give me a call!!
The question is hardly new but it's just one of the many unsolved problems in education.
How to test?
How to teach effectively?
How to motivate students?
How to train teachers properly?
Have any of these been properly addressed yet?
That's the first thing that came to mind when I saw the article.
It's been around for years. I've used a it a few times and was amazed to find one of my random website texts in other peoples's work (It was properly cited so I don't complain).
Quantum level models are very limited in the lengthscales and timescales they are able to model. Shouldn't they first try a slightly less microscopic explanation, based in molecular dynamics that should be easier to verify. You still can have rich dynamics, with vibrations and rotations and diffusion and changes in configuration that might account for the different interactions between the receptor and the odorant.
There are a number of uncertainties for sure. For exmaple we are not sure of the method of use of the nanoparticles. A prevalent hypothesis is they... Applied it directly to the forehead
Nanotubes have many potential applications, but so far the most successful one is as conductive fillers http://www.patagon.8m.com/equations/cnt.html(adddi ng a small amount into a polymer makes is conductive enough to dissipate static charge or block electromagentic interference). Tons per year are used for this, particularly in the auto industry.
The packaging seems inconvienient. I would design it as a stand alone box with a cable to the laptop. This would mitigate problems of noise, fire hazards etc.
I would suspect that for games you don't need many significant digits in the solutions and the cards might not be optimized for solving problems of engineering of scientific interest.
That said I think specialized hardware would be extremely useful for the most common numerical tasks such as solving a large linear system, or ODE solving.
I think there might be people with great imagination which can actually contribute to the solution of a problem, but they might not necesarily be able to do all the steps for the implementation themselves. Should they be labeled lazy, daydreamers and dismissed from the technology process. Could their ideas somehow be used?
Let's supose you have an interesting idea but don't have the time or resources to file a patent, develop a prototype or put them into practice. What should you do?
* Forget about it?
* Disclose it into the public domain and not get a penny?
* Are there easy ways to get the idea to interested developers in such a way that you would get at least some small royalties if the patent is sucessful?
Also there are a lot of scams for would-be inventors out there.
IMO, the parent comment is not a joke, but a great observation. We now know where those figures probably came from. It also makes us think how dumb it is for the press to give so many significant figures for this kind of estimates.
The problem with current volume controls is that your ear adapts the gain to potentially high levels of noise. For example in a noisy environment you crank up the volume and your hearing adapts to that level of sound and you stop noticing how loud it is. An improved volume control system in my opinion should let you crank it up to whatever level you want, but afterwards it will reduce the volume very slowly so in the end you you are not exposed to unsafe levels of sound for too long. Has this been tried?
That's probably true. I'm sort of remembering the use of the word "technology" in the media during the dot com era, it became a buzzword used by businesspeople as a synonym of internet related products and services. Probably short for IT.
Now it's probably starting to recover it's original meaning, probably because of the advances in the hardware front.
Y_combinator is focused mostrly on software and web services. That's cool, but is a sign of a trend that I don't like. This kind of focus on IT sometimes lead people and some media too to equate technology with software and web services. I think this leads the masses to think that's all there is for technology.
Slashdot Mirror
One of the the first renewable fuels was firewood, and using it in quantity caused quite an impact on forests.
Nice, but the motion seems more complicated than just clicking.o undkey.htmLINK
In my opinion the perfect input device should not have moving parts, just two microphones. Here's a description of a purely acoustic keyboard.
http://nanoquimica.awardspace.com.nyud.net:8080/S
From the page: Light metal hydrides such as AlH3 (5) and complexes like NaAlH4 (6) , whi ch contain a high percentage of hydrogen by weight, are attractive as on-board sources of H2 in vehicular applications.
Link: http://v8nu74s71s31g374r7ssn017uloss3c1vr3s.unbf.
A working prototype is nice, but it's only viable if the can manufacture the chips with a high yield. New processes have low yield, meaning a high percentage of the chips don't work.
To dive deeper,I guess we'll have to wait until the polar ice caps melt.
the challenger was a sailboat carrying instruments. It didn't dive. The bastiscaphe trieste, did though. You probably were thinking about this one. http://en.wikipedia.org/wiki/Bathyscaphe_Trieste
I see. That would be too much to write in a wired article for the general public.
Your explanation makes it clear that the seawater compressibility shouldn't be neglected.
Since it's supposed to use little power, I wonder if this would be useful as a means of transporting goods. Would be slow though.
I'm working in a buoyancy related problem so I have to point this out. From the full article: "When pressure compresses a hull in a traditional glider, it gains buoyancy and requires more energy to control." If it's compressed, the volume shrinks, it gains density and loses buoyancy.
Well, I see what you mean with the problems with natural gas in the US. But sooner or later you have to expand the infrastructure, the same goes for the electrical grid. All these new energy ideas are good, but true energy savings in transportation would take a re-thinking of housing and commuting patterns, which might take decades to happen, or a sustained large increase in gasoline prices. If you lived really close to the stores, your friends and your workplace what do you need cars for?.
Compressed natural gas (mostly methane and low C alkanes) has been in use in Argentina for years, it's cheaper and cleaner than gasoline, the autonomy of compressed gas is lower but for city driving it doesn't matter, and cars can still use gasoline because the engine has only minor modifications. This method seems to admit lower pressure in the tank, and might enable to store more gas without need of thick heavy steel was for containing it. Sounds like a good idea to me.
There are some subtleties in measuring things from an image. Lenses distort images in a non-linear way, so just counting the pixels wouldn't be extremely accurate. One of the ways this can be improved is by calibration, basically taking a picture of a bunch of dots in a square array that covers the whole field of view, and do some math. Hey iPhotomeasure people, if you need a consultant for version 2, "with improved calibration" give me a call!!
The question is hardly new but it's just one of the many unsolved problems in education. How to test? How to teach effectively? How to motivate students? How to train teachers properly? Have any of these been properly addressed yet?
That's the first thing that came to mind when I saw the article. It's been around for years. I've used a it a few times and was amazed to find one of my random website texts in other peoples's work (It was properly cited so I don't complain).
Quantum level models are very limited in the lengthscales and timescales they are able to model. Shouldn't they first try a slightly less microscopic explanation, based in molecular dynamics that should be easier to verify. You still can have rich dynamics, with vibrations and rotations and diffusion and changes in configuration that might account for the different interactions between the receptor and the odorant.
There are a number of uncertainties for sure. For exmaple we are not sure of the method of use of the nanoparticles. A prevalent hypothesis is they... Applied it directly to the forehead
Nanotubes have many potential applications, but so far the most successful one is as conductive fillers http://www.patagon.8m.com/equations/cnt.html(adddi ng a small amount into a polymer makes is conductive enough to dissipate static charge or block electromagentic interference).
Tons per year are used for this, particularly in the auto industry.
The packaging seems inconvienient. I would design it as a stand alone box
with a cable to the laptop. This would mitigate problems of noise, fire hazards etc.
I would suspect that for games you don't need many significant digits in the solutions and the cards might not be optimized for solving problems of engineering of scientific interest.
That said I think specialized hardware would be extremely useful for the most common numerical tasks such as solving a large linear system, or ODE solving.
I think there might be people with great imagination which can actually contribute to the solution of a problem, but they might not necesarily be able to do all the steps for the implementation themselves. Should they be labeled lazy, daydreamers and dismissed from the technology process. Could their ideas somehow be used?
Let's supose you have an interesting idea but don't have the time or resources to file a patent, develop a prototype or put them into practice. What should you do? * Forget about it? * Disclose it into the public domain and not get a penny? * Are there easy ways to get the idea to interested developers in such a way that you would get at least some small royalties if the patent is sucessful? Also there are a lot of scams for would-be inventors out there.
IMO, the parent comment is not a joke, but a great observation. We now know where those figures probably came from. It also makes us think how dumb it is for the press to give so many significant figures for this kind of estimates.
The problem with current volume controls is that your ear adapts the gain to potentially high levels of noise. For example in a noisy environment you crank up the volume and your hearing adapts to that level of sound and you stop noticing how loud it is. An improved volume control system in my opinion should let you crank it up to whatever level you want, but afterwards it will reduce the volume very slowly so in the end you you are not exposed to unsafe levels of sound for too long. Has this been tried?
I wonder if these cards could be useful for for Numerical computation? I could use extra cpu power for solving a linear system.
That's probably true. I'm sort of remembering the use of the word "technology" in the media during the dot com era, it became a buzzword used by businesspeople as a synonym of internet related products and services. Probably short for IT. Now it's probably starting to recover it's original meaning, probably because of the advances in the hardware front.
Y_combinator is focused mostrly on software and web services. That's cool, but is a sign of a trend that I don't like. This kind of focus on IT sometimes lead people and some media too to equate technology with software and web services. I think this leads the masses to think that's all there is for technology.