We're taking mass from the earth and putting it in gaseous form farther out from the center. Now remember what happens when an ice skater starts spinning and then extends their hands- they slow down. It seems like the same concept.
My brother runs a laser laboratory. When I visited it I was amazed to find all the walls covered with plywood. He told me that plywood is inpenetrable to many laser types, since the glue in the wood vaporizes and diffuses the beam before it can penetrate the wood.
I can report that it is probably less than 8 hours until spam is received after adding an email address to a web page. I route my web email though my IEEE email address which has a virus detector built in. I bet 99% of those emails I get are flagged by the virus detector. Otherwise I wouldn't know, since I'm running FreeBSD.
On my web site http://www.pythonemproject.com there are some FDTD Python programs that you can use to simulate waveguide antennas. Now these are not GUI based, and there is a learning curve. You basically set up the metal so that its tangential E fields are 0, thats called PEC, perfect electrical conductor. Each bit of metal corresponds to a matrix element. I've been meaning to try out a slotted waveguide antenna on one of my programs, maybe I will get to it and post it there. All of the FDTD programs are GPL, and you can use Animabob to view the E fields in real time.
You can do all the computer simulations you want of the Gnutella network, but I know that it just works. I've never had any problems finding music that I want, its just that it takes a little more time. Its kind of like stamp collecting. Even after Napster fell and there was an upsurge in nodes, I was still able to use it well. Who cares if you are on a subnet of Gnutella if you still find the music you want?
Why not make your monitor into a fish tank?
on
Harddrive Speakers
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· Score: 1
While you're at it, why not make an old monitor into a fish tank. Remove all the electronics, and crt, and put a piece of glass over the front end, cementing and plugging up the holes with RTV. Then cut a hole in the top and add your fish.
Check the National Semiconductor catalog. The LM1893 power line transciever died long ago, and for good reason. It took a team of engineers to install any product using the chips. Thats because the carrier will not traverse power transformers. And what do utilities have a lot of ? Power transformers. You need a repeater to bridge every transformer in the system. Or run fiber or coax to each utility pole. Wasn't feasable in 1986, and I doubt that it is now.
Just in case you are doing scientific apps:
I find that my fully vectorized code runs at about 1/2 C speed with Numeric Python. Marginally vector code at 1/4 to 1/10 the speed of C. Thats great for prototyping since you can make a quick change and see the result pretty quickly. Check out my web site for examples.
1. Broadcast live on the internet
2. Allow every type of banned drug to now be used, including illegal stimulants and hallucinogens
3. Unban Tonya Harding from figure skating
I agree with you that his Linux device is overkill, but I disagree about the affects of too much chlorine. Many people are simply intolerant or allergic to it. We've been using Baquacil, which is a hydrogen peroxide/organic disenfectant based system. We get many reports from people that they didn't know smimming in a pool could be so comfortable without the irritation and smell of chlorine.
What is taking so long to get wireless internet access to everyone? Ham radio operators have been communicating via packet radio for years, and even exchange their own TV video over UHF. As a wireless engineer, I'm really frustrated that I can't get rid of these darned cables. The technology exists to do it, but the political and business will does not. Expensive satellite connnections seem to be the only option. I'm glad to see some grass roots movement in the right direction.
I've spent about $1000 on books from ArtechHouse last year. All of them were about electromagnetism, antennas, EM simulation (well, that one is programming related). What I need are books that take very esoteric subjects in electronics, physics, and math, and put the subject matter into an easy to understand format, but yet not be cursory or condescending. Its a very tough act to follow through on. C. Balanis is one author who does it well (Wiley).
For a good example, check out the MIT Radiation Lab series of books for the work that was done during WW2 and eventually spawned a huge amount of the technology we use today. Used your microwave oven lately? e.g. Another example, Gallium Arsenide integrated circuits used to be the bread and butter of military applications, now they are used in most cellphone handsets, WLAN cards, etc.
I'm a wireless engineer, but I have no idea what wavelets are. I've seen some arcane journal articles where wavelets are seen as some kind of boon to mankind for every technical problem ever posed. For example, wavelets in Nuclear Fusion, wavelets in EM simulation, wavelets for curing cancer. How real is this?
I work in the cellphone chip business, and we and many others really need some carriers that can make a 2.5G phone that people will really want. In order for them to want it, it has to be easy to use and truly deliver on the bandwidth. So far we have seen none of that, and its reflected in the poor earnings reports for Nokia, Motorola, and Ericsson, which has rippled down to everyone else in the supplier business
Too bad Enron didn't use transparent concrete
on
Transparent Concrete
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· Score: 1
Then everybody might know what really happened there!
Future news: "The free-energy story was debunked when the machine tipped over and 100 hamsters ran for cover. Animal rights activists were outraged, and picketed for weeks"
And in related news Acme Mobile Shredding stock has quadrupled in the last year. Says CEO Mike Flimflamigan, "...I hate to make so much money off of other peoples' misery, but its the American Way TM"
Where I work we're still using NT4 and Word 97. This is a medium sized company with 1000 employees. I think that until the current economic climate changes, not many businesses are going to touch XP, or even Win2K for that matter.
Although I use FreeBSD, building a custom kernel is good for Linux or any of the *nix's. You can get rid of device drivers that slow down the boot process, and you can tailor optimization for your specific uP. That will be especially true if we ever get a gcc that has decent Athlon optimization. I'm also told that taking out the plain Jane i386 support speeds up things considerably.
Slashdot Mirror
Windows takes 20 minutes to boot.
We're taking mass from the earth and putting it in gaseous form farther out from the center. Now remember what happens when an ice skater starts spinning and then extends their hands- they slow down. It seems like the same concept.
My brother runs a laser laboratory. When I visited it I was amazed to find all the walls covered with plywood. He told me that plywood is inpenetrable to many laser types, since the glue in the wood vaporizes and diffuses the beam before it can penetrate the wood.
I can report that it is probably less than 8 hours until spam is received after adding an email address to a web page. I route my web email though my IEEE email address which has a virus detector built in. I bet 99% of those emails I get are flagged by the virus detector. Otherwise I wouldn't know, since I'm running FreeBSD.
On my web site http://www.pythonemproject.com there are some FDTD Python programs that you can use to simulate waveguide antennas. Now these are not GUI based, and there is a learning curve. You basically set up the metal so that its tangential E fields are 0, thats called PEC, perfect electrical conductor. Each bit of metal corresponds to a matrix element. I've been meaning to try out a slotted waveguide antenna on one of my programs, maybe I will get to it and post it there. All of the FDTD programs are GPL, and you can use Animabob to view the E fields in real time.
You can do all the computer simulations you want of the Gnutella network, but I know that it just works. I've never had any problems finding music that I want, its just that it takes a little more time. Its kind of like stamp collecting. Even after Napster fell and there was an upsurge in nodes, I was still able to use it well. Who cares if you are on a subnet of Gnutella if you still find the music you want?
For /dev/null
While you're at it, why not make an old monitor into a fish tank. Remove all the electronics, and crt, and put a piece of glass over the front end, cementing and plugging up the holes with RTV. Then cut a hole in the top and add your fish.
Check the National Semiconductor catalog. The LM1893 power line transciever died long ago, and for good reason. It took a team of engineers to install any product using the chips. Thats because the carrier will not traverse power transformers. And what do utilities have a lot of ? Power transformers. You need a repeater to bridge every transformer in the system. Or run fiber or coax to each utility pole. Wasn't feasable in 1986, and I doubt that it is now.
Just in case you are doing scientific apps:
I find that my fully vectorized code runs at about 1/2 C speed with Numeric Python. Marginally vector code at 1/4 to 1/10 the speed of C. Thats great for prototyping since you can make a quick change and see the result pretty quickly. Check out my web site for examples.
1. Broadcast live on the internet
2. Allow every type of banned drug to now be used, including illegal stimulants and hallucinogens
3. Unban Tonya Harding from figure skating
I agree with you that his Linux device is overkill, but I disagree about the affects of too much chlorine. Many people are simply intolerant or allergic to it. We've been using Baquacil, which is a hydrogen peroxide/organic disenfectant based system. We get many reports from people that they didn't know smimming in a pool could be so comfortable without the irritation and smell of chlorine.
What is taking so long to get wireless internet access to everyone? Ham radio operators have been communicating via packet radio for years, and even exchange their own TV video over UHF. As a wireless engineer, I'm really frustrated that I can't get rid of these darned cables. The technology exists to do it, but the political and business will does not. Expensive satellite connnections seem to be the only option. I'm glad to see some grass roots movement in the right direction.
I hereby declare that this comment cannot be moderated down without my express permission :)
I've spent about $1000 on books from ArtechHouse last year. All of them were about electromagnetism, antennas, EM simulation (well, that one is programming related). What I need are books that take very esoteric subjects in electronics, physics, and math, and put the subject matter into an easy to understand format, but yet not be cursory or condescending. Its a very tough act to follow through on. C. Balanis is one author who does it well (Wiley).
For a good example, check out the MIT Radiation Lab series of books for the work that was done during WW2 and eventually spawned a huge amount of the technology we use today. Used your microwave oven lately? e.g. Another example, Gallium Arsenide integrated circuits used to be the bread and butter of military applications, now they are used in most cellphone handsets, WLAN cards, etc.
Stripped of all of its bugs, I think you just get MSDOS6.2 :)
Thanks for the explanation. Yes, I'm an old timeer :) BSEE 1984 :) Rob.
I'm a wireless engineer, but I have no idea what wavelets are. I've seen some arcane journal articles where wavelets are seen as some kind of boon to mankind for every technical problem ever posed. For example, wavelets in Nuclear Fusion, wavelets in EM simulation, wavelets for curing cancer. How real is this?
I work in the cellphone chip business, and we and many others really need some carriers that can make a 2.5G phone that people will really want. In order for them to want it, it has to be easy to use and truly deliver on the bandwidth. So far we have seen none of that, and its reflected in the poor earnings reports for Nokia, Motorola, and Ericsson, which has rippled down to everyone else in the supplier business
Then everybody might know what really happened there!
Future news: "The free-energy story was debunked when the machine tipped over and 100 hamsters ran for cover. Animal rights activists were outraged, and picketed for weeks"
And in related news Acme Mobile Shredding stock has quadrupled in the last year. Says CEO Mike Flimflamigan, "...I hate to make so much money off of other peoples' misery, but its the American Way TM"
Where I work we're still using NT4 and Word 97. This is a medium sized company with 1000 employees. I think that until the current economic climate changes, not many businesses are going to touch XP, or even Win2K for that matter.
Although I use FreeBSD, building a custom kernel is good for Linux or any of the *nix's. You can get rid of device drivers that slow down the boot process, and you can tailor optimization for your specific uP. That will be especially true if we ever get a gcc that has decent Athlon optimization. I'm also told that taking out the plain Jane i386 support speeds up things considerably.