You're not missing much. Those of us who are lucky enough to have two working eyes can simulate one eyed vision fairly easily just by closing an eye. It is possible for you to do the same, but its a bit more difficult (see below).
The second eye does not provide much aditional information, it just simplifies the mental process of depth perception using a little math. If there are two people are standing in a field, one 400 feet to the west of the other. Both of the people are facing north. Now imagine that there is a flag halfway in between them some distance to the North. Lets pretend the one on the West sees the flag as being 30 degrees east of North and the one on the East sees the flag as being 30 degrees west of North. It is now possible for them to calculate the distance, or "depth" to the flag using trigonometry. The formula would be (DistanceBetweenObservers / 2) / Tangent(Angle to flag). In this case, the flag is about 346 feet away.
It is actually possible for you to see the same sort of information that a person with two eyes sees. By moving your head around slightly, your eye will visit multiple locations in a short period of time. This creates the same effect as having multiple eyes, because the scene you are looking at changes very little in the time your head bobs around, the pictures you see at two points in time are equivelent to the two pictures a person with binocular vision is revieving at every point in time. To return to the flag anology, a single person can calculate the position of the flag in the field by moving along the border of the field and visiting both locations, the East and the West. By measuring the angle to the flag at both locations, this single observer can make exactly the same calculation as the two observers.
For the above reason "depth perception" issues associated with driving are a moot point. The motion of just one of the drivers eyes through the environment provides far more depth perception information than that of stationary binocular vision.
The only benefits I have noticed of binocular vision over monocular vision are better ability to focus my eyes (this could probably be completely overcome through practice) and more intuitive depth perception when standing still (overcome by moving).
The origrinal slashdotted site started to redirect here after a couple of days. This is just the standard editorial sloppiness that ensures I'll never pay for slashdot.
Re:I wonder if they really can make this 'invisibl
on
Foiling Cinema Pirates
·
· Score: 1
I'll be able to see it. I can see the screen refresh on monitors at 60 or 65 hz. I can see the flicker at 70 hz. I will only use LCD screens, screens with fairly persistent displays (like old phosphorus terminals), and screens set to 75 hs or above. I can also here sounds up to about 37 kHz and the difference between mp3s and CDs.
This is pointless, as people will still rip from Screener DVDs. Even if you wanted to RIP with a camerra you can still do it. The way to rip it is to use a low film rate video camera, about 24 hz, so that the camera can't pick up smaller artifacts, or to use a very high film rate camera, so that on playback the artifacts are of the same quality (ie invisible) as they were in the theater. The third method would be to film it with whatever and just apply a simple digital filter to remove it. Anything as simple as a low pass filter set to cut anything of extremely high frequency (twice that of a one frame scene change) will get it. They forget the world has access to fourier transforms and the same film editing power they have.
Spontaneous flipping still poses an upper limit to magnetic data storage capacity. Basically, if you cram lots of bits too close together, they will start flipping each other.
Remember the original Windows 95 floppy disk installation. I don't know how many times I got the error that I can't install it if there is an unrecognizable partition anywhere on the computer. (i.e. a Linux partition, etc...)
As many posts to this site have pointed out, using GPS in agriculture is not new. However, there is one application that would be of great economic and environmental value. An affordable centimeter range differential GPS signal that can be used for a farm sized area would allow farmers to drive tractors through their fields year after year and always drive in the same place. This ability seems like it would be trivial and only of intrest to the technocrat, but the reality of the situation is quite different. Every time a tractor drives through a field it compacts and damages the soil. By making the same tractor passes year after year, a farmer could seperate his farmland into plantland and narrow strips of tractorland. But, there is a more important application. If a farmer is able to always drive in the same spot, he can do more exotic things to the other parts of the field without risk of damaging them. One of the possibilities (which is already being tested by the Malheur Experiment Station) is permanent buried drip irrigation systems. This modifies the existing drip irrigation systems by buring the tape about 11 inches below the soil and leaving it in for multiple seasons. This significantly decreases the cost of using drip irrigation. The drip irrigation is a small buried tape which emits water in the root zone of the plants. It allows the minimum ammount of water to be applied to irrigate a crop. This has many invironmental benefits. Because no excess water is applied to the field, there is no runoff, which can contain agricultural chemicals. There is also no excess water, so a process called leaching does not take place. In this process excess water seeps down through the soil, carrying with it ag chemicals, and fertilizer, both naturaly occuring and artificial. When the nitrogen is not leached out of the soil, less fertilizer must be applied to the field to produce similar yields. High precission farm GPS will help to minimize damage to fields from tractor traffic, enable the use of permantent drip irrigation systems, and possibly technologies which have not yet been concieved. These technologies are of significant interest because they will allow more economic and environmentaly friendly farming practices in the future.
This will not set a legal precedent, as it has nothing to do with US law. Both New Line (Austin Powers) and MGM (The studio that makes Bond flicks) are members of the MPAA (Motion Picture Association of America). It is in New Line's best interest to remain a member of the MPAA, which collectively represents most studios and many other entities. The MPAA sided with MGM, meaning New Line has to conform to MPAA guidelines or quit.
You are right, however, that under US law, the new Austin Powers flick should be protected as satire, but the name it is being sold under (Goldmember) very likely violates trademark issues (Although not the character in the film - satire again. He isn't being sold; the film is.)
You are probably not thinking about angular momentum, but energy in circular motion.
Energy contained in circular motion is equal to:
(This is the energy associatied with angular momentum)
E = 1/2 I * (w^2)
Where I is the moment of inertia and w is the angular frequency (in this case about 7.27 x 10^-5 1/s because the period of rotation will be 24 hours). The moment of inertia will increase as the load gets further away from the Earth.
I = m * (r ^ 2)
m is mass
and r is radius from the center of the earth.
So, the energy in circular motion at each height would be:
E = 1/2 * m * (r^2) * (w^3)
To get the formula for the total energy at each height, add the potential energy from Earth's gravitational pull.
To answer your question, the increase in angular momentum of the payload is a result of the force exerted by the elevator doing work on the payload, resulting in a change in energy of circular motion.
If you are worried about what is called conservation of angular momentum, the increase in angular momentum comes from a decrease in the angular momentum of the Earth. Conservation laws are usually written like so:
initial = final
So,
L (angular momentum) initial = L final
I forgot, angular momentum = I * w
Where L is the sum of the angular momentums in the system.
So,
L(earth) + L(payload) + L(elevator) initial = L(earth) + L(payload) + L(elevator) final
Because the radius from center of mass of the elevator and the Earth don't (negligibly) change during the lifting of the payload (this would affect I) and that for the payload does, the final angular frequency of something must be slower. Since they are all tethered together going at the same angular frequency, their angular frequencies must remain the same, and the anular frequency of the Earth will decreas very slightly (negligibly actually) and days will become slightly shorter while the payload is in space. You wouln't notice it though, because this happens every time any payload is sent into space -- every satellite space ship, etc.
When you drink too much physics, alchohol just doesn't make any sense anymore.
Google.com gets about 100 million page impressions per day right now. With a penny per page, Google would make $1 million a day, or something like $350 million per year.
Google currently has indexed 1,610,476,000 pages. According to my logs, Google makes a complete crawl about once every two to three weeks. So, every twenty one days, google accesses 1.6 billion pages. Google probably crawls 76 million pages per day at a cost of 760,000 dollars. Additionally, Google hits the first 10% or so of my web site every week. If this is typical, it brings the total crawls in three weeks up to 1.9 billion and ups the pages crawled to about 91 million per day. This leaves Google with a measly $90,000 a day. So, under this system, by cutting the sevice they provide 10% by doing fewer crawls, Google could double their profits. This would discourage search engines from providing the excellent service they currently do.
Ohh, but search engines should get do do it for free. Watch and see how quickly I write a proxy that indexes pages as I browse them and provides a search feature for the 7 people crazy enough to go poking arround in my high port numbers each year. Inevitably, free pages for crawlers means free pages for everyone using the new FreeWeb DistributedSearchEngineAndPageRatingAndIndexingSys temBrowser.
"This holographic approach suggests a method of web encryption using multiple hop paths and ping times to create a message which can only be decoded when received at a specific target node!"
There is no analogy between the interference patterns in the water and the internet. The patterns interfere with each other because they are waves. (Recall Physics 1). On the internet, two signals sent down two different paths will (hopefully) not interfere with and distort each other. It is true that if you cut a letter in two, and send it in two different envelopes, someone who intercepts only one will not be able to read the entire message.
This works underwater because the sounds are designed so that their interference is only meaningful at one point in the water and that intercepting the interference pattern elsewhere is always meaningless. I suspect that, if the interference pattern were read at multiple locations, the message could be interperated.
Slashdot Mirror
Can I patent every idea I have, and then sue others who have the same idea and make something of it?
Yes
Zerbey,
You're not missing much. Those of us who are lucky enough to have two working eyes can simulate one eyed vision fairly easily just by closing an eye. It is possible for you to do the same, but its a bit more difficult (see below).
The second eye does not provide much aditional information, it just simplifies the mental process of depth perception using a little math. If there are two people are standing in a field, one 400 feet to the west of the other. Both of the people are facing north. Now imagine that there is a flag halfway in between them some distance to the North.
Lets pretend the one on the West sees the flag as being 30 degrees east of North and the one on the East sees the flag as being 30 degrees west of North. It is now possible for them to calculate the distance, or "depth" to the flag using trigonometry. The formula would be (DistanceBetweenObservers / 2) / Tangent(Angle to flag). In this case, the flag is about 346 feet away.
It is actually possible for you to see the same sort of information that a person with two eyes sees. By moving your head around slightly, your eye
will visit multiple locations in a short period of time. This creates the same effect as having multiple eyes, because the scene you are looking at changes very little in the time your head bobs around, the pictures you see at two points in time are equivelent to the two pictures a person with binocular vision is revieving at every point in time. To return to the flag anology, a single person can calculate the position of the flag in the field by moving along the border of the field and visiting both locations, the East and the West. By measuring the angle to the flag at both locations, this single observer can make exactly the same calculation as the two observers.
For the above reason "depth perception" issues associated with driving are a moot point. The motion of just one of the drivers eyes through the environment provides far more depth perception information than that of stationary binocular vision.
The only benefits I have noticed of binocular vision over monocular vision are better ability to focus my eyes (this could probably be completely overcome through practice) and more intuitive depth perception when standing still (overcome by moving).
Good luck and don't feel left out,
Cedric
The origrinal slashdotted site started to redirect here after a couple of days. This is just the standard editorial sloppiness that ensures I'll never pay for slashdot.
I'll be able to see it. I can see the screen refresh on monitors at 60 or 65 hz. I can see the flicker at 70 hz. I will only use LCD screens, screens with fairly persistent displays (like old phosphorus terminals), and screens set to 75 hs or above. I can also here sounds up to about 37 kHz and the difference between mp3s and CDs.
This is pointless, as people will still rip from Screener DVDs. Even if you wanted to RIP with a camerra you can still do it. The way to rip it is to use a low film rate video camera, about 24 hz, so that the camera can't pick up smaller artifacts, or to use a very high film rate camera, so that on playback the artifacts are of the same quality (ie invisible) as they were in the theater. The third method would be to film it with whatever and just apply a simple digital filter to remove it. Anything as simple as a low pass filter set to cut anything of extremely high frequency (twice that of a one frame scene change) will get it. They forget the world has access to fourier transforms and the same film editing power they have.
I got the Vorizon DSL add on this page.
Spontaneous flipping still poses an upper limit to magnetic data storage capacity. Basically, if you cram lots of bits too close together, they will start flipping each other.
r ch.nsf/pages/frontier399.html
see: http://domino.watson.ibm.com/comm/wwwr_thinkresea
under storing information for info on pushing this limit
That's right. This theory, that, "The small compartments would have been formed in iron sulphide rocks near hot, hydrothermal vents on the sea floor, not in the atmosphere" was orriginaly posed as the doctorate thesis of / ">Dr. Everett Shock</a>, now working at Arizona State University.
This same work also sparked many of the current theories about the possibility of life on Mars.
Remember the original Windows 95 floppy disk installation. I don't know how many times I got the error that I can't install it if there is an unrecognizable partition anywhere on the computer. (i.e. a Linux partition, etc...)
As many posts to this site have pointed out, using GPS in agriculture is not new. However, there is one application that would be of great economic and environmental value. An affordable centimeter range differential GPS signal that can be used for a farm sized area would allow farmers to drive tractors through their fields year after year and always drive in the same place. This ability seems like it would be trivial and only of intrest to the technocrat, but the reality of the situation is quite different. Every time a tractor drives through a field it compacts and damages the soil. By making the same tractor passes year after year, a farmer could seperate his farmland into plantland and narrow strips of tractorland.
But, there is a more important application. If a farmer is able to always drive in the same spot, he can do more exotic things to the other parts of the field without risk of damaging them. One of the possibilities (which is already being tested by the Malheur Experiment Station) is permanent buried drip irrigation systems. This modifies the existing drip irrigation systems by buring the tape about 11 inches below the soil and leaving it in for multiple seasons. This significantly decreases the cost of using drip irrigation. The drip irrigation is a small buried tape which emits water in the root zone of the plants. It allows the minimum ammount of water to be applied to irrigate a crop. This has many invironmental benefits. Because no excess water is applied to the field, there is no runoff, which can contain agricultural chemicals. There is also no excess water, so a process called leaching does not take place. In this process excess water seeps down through the soil, carrying with it ag chemicals, and fertilizer, both naturaly occuring and artificial. When the nitrogen is not leached out of the soil, less fertilizer must be applied to the field to produce similar yields.
High precission farm GPS will help to minimize damage to fields from tractor traffic, enable the use of permantent drip irrigation systems, and possibly technologies which have not yet been concieved. These technologies are of significant interest because they will allow more economic and environmentaly friendly farming practices in the future.
This will not set a legal precedent, as it has nothing to do with US law. Both New Line (Austin Powers) and MGM (The studio that makes Bond flicks) are members of the MPAA (Motion Picture Association of America). It is in New Line's best interest to remain a member of the MPAA, which collectively represents most studios and many other entities. The MPAA sided with MGM, meaning New Line has to conform to MPAA guidelines or quit.
You are right, however, that under US law, the new Austin Powers flick should be protected as satire, but the name it is being sold under (Goldmember) very likely violates trademark issues (Although not the character in the film - satire again. He isn't being sold; the film is.)
You are probably not thinking about angular momentum, but energy in circular motion.
Energy contained in circular motion is equal to:
(This is the energy associatied with angular momentum)
E = 1/2 I * (w^2)
Where I is the moment of inertia and w is the angular frequency (in this case about 7.27 x 10^-5 1/s because the period of rotation will be 24 hours). The moment of inertia will increase as the load gets further away from the Earth.
I = m * (r ^ 2)
m is mass
and r is radius from the center of the earth.
So, the energy in circular motion at each height would be:
E = 1/2 * m * (r^2) * (w^3)
To get the formula for the total energy at each height, add the potential energy from Earth's gravitational pull.
To answer your question, the increase in angular momentum of the payload is a result of the force exerted by the elevator doing work on the payload, resulting in a change in energy of circular motion.
If you are worried about what is called conservation of angular momentum, the increase in angular momentum comes from a decrease in the angular momentum of the Earth. Conservation laws are usually written like so:
initial = final
So,
L (angular momentum) initial = L final
I forgot, angular momentum = I * w
Where L is the sum of the angular momentums in the system.
So,
L(earth) + L(payload) + L(elevator) initial = L(earth) + L(payload) + L(elevator) final
Because the radius from center of mass of the elevator and the Earth don't (negligibly) change during the lifting of the payload (this would affect I) and that for the payload does, the final angular frequency of something must be slower. Since they are all tethered together going at the same angular frequency, their angular frequencies must remain the same, and the anular frequency of the Earth will decreas very slightly (negligibly actually) and days will become slightly shorter while the payload is in space. You wouln't notice it though, because this happens every time any payload is sent into space -- every satellite space ship, etc.
When you drink too much physics, alchohol just doesn't make any sense anymore.
Glass2k is still availible for download from chime.tv:
http://www.chime.tv/products/glass2k/Glass2k.exe
Google currently has indexed 1,610,476,000 pages. According to my logs, Google makes a complete crawl about once every two to three weeks. So, every twenty one days, google accesses 1.6 billion pages. Google probably crawls 76 million pages per day at a cost of 760,000 dollars. Additionally, Google hits the first 10% or so of my web site every week. If this is typical, it brings the total crawls in three weeks up to 1.9 billion and ups the pages crawled to about 91 million per day. This leaves Google with a measly $90,000 a day. So, under this system, by cutting the sevice they provide 10% by doing fewer crawls, Google could double their profits. This would discourage search engines from providing the excellent service they currently do.
Ohh, but search engines should get do do it for free. Watch and see how quickly I write a proxy that indexes pages as I browse them and provides a search feature for the 7 people crazy enough to go poking arround in my high port numbers each year. Inevitably, free pages for crawlers means free pages for everyone using the new FreeWeb DistributedSearchEngineAndPageRatingAndIndexingSys temBrowser.
"This holographic approach suggests a method of web encryption using multiple hop paths and ping times to create a message which can only be decoded when received at a specific target node!"
There is no analogy between the interference patterns in the water and the internet. The patterns interfere with each other because they are waves. (Recall Physics 1). On the internet, two signals sent down two different paths will (hopefully) not interfere with and distort each other. It is true that if you cut a letter in two, and send it in two different envelopes, someone who intercepts only one will not be able to read the entire message.
This works underwater because the sounds are designed so that their interference is only meaningful at one point in the water and that intercepting the interference pattern elsewhere is always meaningless. I suspect that, if the interference pattern were read at multiple locations, the message could be interperated.