And this is sponsored by the Department of Energy for what reason?
For the same reason the Department of Commerce is responsible for our atomic clocks?
Seriously though, the DOC, DOE, etc., each have a variety of national labs, each of which have many areas of research. I'd suppose the DOE's expertise in high-reliability sensors (for light and all other wavelengths of radiation) is one reason why they mesh well with this project.
No, not their skin. Kindt & Schmuttenmaer (1996). 1 cm of water attenuates frequencies above 100 GHz by several hundred dB.
3. Yes and no. They're better than X-rays for some diagnostics, but, as always, more knowledge = less peace.
X-rays and terahertz radiation are not really competitors in the medical field, due to the fact that terahertz radiation is attenuated greatly by water, and we're mostly water. You can detect some skin conditions with it, but only those in the first 1-3 mm of tissue. These are also visible to the naked eye, typically.
Now, you can look through bandages to see if a wound is healed, yes. That could be useful, but we also like changing bandages too, so it's debatable.
1) They can penetrate through clothing/plastic/flesh, and most of the materials mentioned seem to be organic in nature. This gives them "X-ray"-like properties.
Sorry, terahertz radiation cannot penetrate through flesh, in any manner comparable to X-ray radiation. We (our bodies) are pretty much water, when it comes down to it, and above 100 GHz, even 1 cm of water will attenuate a signal by several hundred dB. Refer to Kindt & Schmuttenmaer (1996) for the double-Debye model fit parameters.
The images you probably have in mind are from reflectance-based measurements, rather than transmittance. They appear similar to X-ray images, but have very little in common.
Clothing, common building materials, etc., are all fairly translucent to terahertz radiation.
2) They were able to make T-Rays before in laboratories, but now they can make them more cheaply, with less power, in human-friendly settings.
Basically.
3) T-Rays give off less radiation than X-rays, due to the much larger wavelength.
I think you meant to say that terahertz radiation has lower photon energy than X-ray radiation. That is true.
Here's what the diffraction pattern looks like, quite impressive. Here is their other paper (no registration required) on the design of these near-field focusing plates.
The results are quite impressive indeed; there are no sidelobes or spillover to speak of. The concept to understand here is that the final radiation pattern is designed (it's the starting point, in the math), and the required focusing plate geometry is the result of solving the equations in the paper.
Your points are correct to some extent. My method is indeed invalid if the following are simultaneously true: (1) the password field is using a fixed-width font, (2) all keystrokes and mouse activity are timestamped, (3) the password field coordinates on the screen are known.
Many methods can be imagined to add to the difficulty, including moving the window around, selecting other objects intermittently and entering keystrokes while they are active, and so on and so forth.
Remember, no single method is perfect, assuming there is a keylogger. Hopefully the keylogger owner is after the low-hanging fruit, which you won't be if you do any of these things. If he's actually targeting you specifically, you have bigger things to worry about.
Yes, and forms that don't allow pasting (certain Flash forms, etc)??? Easy. If your password is "secret", type "s", then something random, like "jd#'2;Knfn>", then highlight those last characters (except for the "s"), and type "e". Continue until done. Takes a while but is fairly safe.
Victorinox in general, actually! It took me a while to notice, but everyone who actively uses a laptop in my research group has a Victorinox case/bag of some sort. None of us have the same model, and we all swear by them.
Mine is the Web Messenger - works well for a laptop up to ~15.5" (the GP's hammock comment is dead on), as well as some file folders, laptop accessories (charger, wireless mouse, etc.), headphones, and so on and so forth. I've had it for over 2.5 years and have yet to see any wear. The ballistic nylon is invincible.
Regarding overstuffing - being that it's a messenger bag, the outer flap folds over and locks to two adjustable straps. I've filled it way too full on many occasions, and neither the bag nor the contents suffered at all. Additionally, the padded strap is amazing; it has never cut into my shoulder like backpacks or other messenger bags tend to do. It's overengineered, without a doubt.
...you could also build a Faraday cage around your room and charge it...
It doesn't need to be charged.
A wire mesh made from a decent conductor will be just fine. The frequency you're interested in blocking also has a lot to do with the mesh size/shape. For example, regular chicken-wire (hexagonal, ~1" openings) attenuates 2.4 GHz signals by approximately 20 dB.
Yes, a transreflective LCD, such as what is on this Garmin GPS60CS. The brighter the sunlight, the brighter the screen. It really works well. From now on, I'll never buy a device made for outdoor use that has a regular LCD.
I just got the Webmessenger. Best laptop bag I've ever seen or used. Tons of compartments, pockets, etc. Thick padded shoulder strap. Metal (not plastic) everything.
Oh yeah, and it has laptop insurance for a year. Pretty handy.
If you really need to stray from kazaaliteuser@kazaa, add some profanity to your username.
I seriously doubt we'd see "RIAA vs. FuckRIAA@Kazaa" on the news, or "RIAA vs. YourGoatsAssFuck@Kazaa".
I don't see any usernames on that list that have R-rated language in them. The worst appear to be "pimp", "booty", and "hot", in whatever self-serving context the user thought would be exciting.
The whole premise is wrong in my opinion, I think I should be able to do what I want with things people give to me or leave on my property.
If someone GIVES you something, yes. If someone LEAVES something on your property, yes. Your argument relies on the fact that these "things" are usually objects, and someone is not leaving them on -everyone's- property. Radio waves do not fit into this category.
If you are beaming your signals into my property, my house, my body, my kids, etc, I will damn well do what I please with them!
Yes, you have that right. You can do what you please with them.
I almost have a duty to intercept them and decode them and make sure they are not harmful in anyway.
I guess my question is this. Do you intercept and decode every radio wave that makes its way onto your property? Or only the ones you think/know contain useful information, like digital television? Do you decode amateur radio traffic? Do you simultaneously listen to every radio station that happens to be availible on your property? Do you decode your neighbors' microwave frequencies from their MICROWAVE? Do you listen to every police band radio transmission that you can find? Do you listen to ELF transmissions designed for communication with submarines? If you do all of this (and more), then I think you win. If not, it sounds like you are taking advantage of a service that is meant to be provided at a cost, not checking to ensure the signals are not harmful in any way.
If they arrived unsolicited in the physical mail they would be mine to keep by federal law no questions asked.
Right, but they don't. See my first paragraph.
You don't want me to do anything with them?? Then keep them off my land and out of my body, problem solved.
Or just don't worry about them. Problem solved. Or... listen to and decode ALL of them in order to make your argument valid. Problem solved.
These are physical radio waves, you are dumping them on my property and I can't do what I want with them?
Use IPSec. There are many tutorials for using IPSec in tunnel mode as a replacement for WEP. Google it. I wrote the 3rd or 4th one down - it isn't that hard, guys. Please don't use WEP, it really isn't smart.
It wouldn't matter if you wore it in the rain, as long as the water didn't form a complete circuit with the ground (literally and figuratively).
The surface of the jacket may be at 80,000V, but that isn't going to be affected by rain drops; just like if someone threw a tennis ball at it - it would just bounce and fall off. The ball isn't going to be shocked, and neither would the rain.
... it won't work. At least, it won't work very well.
There are only 3 non-overlapping 802.11b channels, or 4 if you do it right. Either way though, that isn't 7.
However, if you can get it down to 3 or 4 links, don't use omnis anyway - use some little 8dBi-14dBi patch antennas, and do highly directional links to the radios you're bridging to. You only want to use omnis for client (think people moving around, unknown target direction) access.
The above is what the traditional thinkers would say. And what you were probably thinking, given the fact you said "point to point" link for the omni -> client links.
You can get around that barrier, however, if you do a single AP at your POP, and the bridged radios are simply looking to the AP for client access. The downside to this is that all the bridged radios will be sharing the bandwidth of a single channel, but you can have 7 (or more) links from your central antenna this way.
And if you're going to do it that way, get two 15dBi 180-degree sector antennas (cell-site quality), put them back-to-back, and do a combiner feed to your AP box.
CD's don't have theatrical runs. Sure, many movies don't, but theater releases are where most movies make their big money.
I say:
Actually, video rentals (and sales) are where most movies make their money. It's something like 60/40:rentals/theater for most movies. Remember, rentals and sales just keep going. And going. And going. Theater runs are usually a few months at most.
Slashdot Mirror
A Faraday cage (or two) does not block magnetic fields.
For the same reason the Department of Commerce is responsible for our atomic clocks?
Seriously though, the DOC, DOE, etc., each have a variety of national labs, each of which have many areas of research. I'd suppose the DOE's expertise in high-reliability sensors (for light and all other wavelengths of radiation) is one reason why they mesh well with this project.
Now, you can look through bandages to see if a wound is healed, yes. That could be useful, but we also like changing bandages too, so it's debatable.
The images you probably have in mind are from reflectance-based measurements, rather than transmittance. They appear similar to X-ray images, but have very little in common.
Clothing, common building materials, etc., are all fairly translucent to terahertz radiation. Basically. I think you meant to say that terahertz radiation has lower photon energy than X-ray radiation. That is true.
Here is their other paper (no registration required) on the design of these near-field focusing plates. The results are quite impressive indeed; there are no sidelobes or spillover to speak of. The concept to understand here is that the final radiation pattern is designed (it's the starting point, in the math), and the required focusing plate geometry is the result of solving the equations in the paper.
Your points are correct to some extent. My method is indeed invalid if the following are simultaneously true: (1) the password field is using a fixed-width font, (2) all keystrokes and mouse activity are timestamped, (3) the password field coordinates on the screen are known.
Many methods can be imagined to add to the difficulty, including moving the window around, selecting other objects intermittently and entering keystrokes while they are active, and so on and so forth.
Remember, no single method is perfect, assuming there is a keylogger. Hopefully the keylogger owner is after the low-hanging fruit, which you won't be if you do any of these things. If he's actually targeting you specifically, you have bigger things to worry about.
Victorinox in general, actually! It took me a while to notice, but everyone who actively uses a laptop in my research group has a Victorinox case/bag of some sort. None of us have the same model, and we all swear by them.
Mine is the Web Messenger - works well for a laptop up to ~15.5" (the GP's hammock comment is dead on), as well as some file folders, laptop accessories (charger, wireless mouse, etc.), headphones, and so on and so forth. I've had it for over 2.5 years and have yet to see any wear. The ballistic nylon is invincible.
Regarding overstuffing - being that it's a messenger bag, the outer flap folds over and locks to two adjustable straps. I've filled it way too full on many occasions, and neither the bag nor the contents suffered at all. Additionally, the padded strap is amazing; it has never cut into my shoulder like backpacks or other messenger bags tend to do. It's overengineered, without a doubt.
...you could also build a Faraday cage around your room and charge it...
It doesn't need to be charged.
A wire mesh made from a decent conductor will be just fine. The frequency you're interested in blocking also has a lot to do with the mesh size/shape. For example, regular chicken-wire (hexagonal, ~1" openings) attenuates 2.4 GHz signals by approximately 20 dB.
Yes, a transreflective LCD, such as what is on this Garmin GPS60CS. The brighter the sunlight, the brighter the screen. It really works well. From now on, I'll never buy a device made for outdoor use that has a regular LCD.
If you watch NASA TV, you can usually see what OS is used on many of the computers.
:) No FOIAs needed.
The cameras don't hold back when panning around the JPL control room.
Determining what OSes are used is left as an exercise for the reader.
Bjorn Lomborg says Bjorn Lomborg is not stupid.
I just got the Webmessenger. Best laptop bag I've ever seen or used. Tons of compartments, pockets, etc. Thick padded shoulder strap. Metal (not plastic) everything.
Oh yeah, and it has laptop insurance for a year. Pretty handy.
Next Generation Secure Computing Base.
Until I (the prisoner) pull out a BB gun and shoot the balloon...
(bulletproof balloons might raise the cost a bit.)
I like the NBA image though.
If you really need to stray from kazaaliteuser@kazaa, add some profanity to your username.
I seriously doubt we'd see "RIAA vs. FuckRIAA@Kazaa" on the news, or "RIAA vs. YourGoatsAssFuck@Kazaa".
I don't see any usernames on that list that have R-rated language in them. The worst appear to be "pimp", "booty", and "hot", in whatever self-serving context the user thought would be exciting.
The whole premise is wrong in my opinion, I think I should be able to do what I want with things people give to me or leave on my property.
If someone GIVES you something, yes. If someone LEAVES something on your property, yes. Your argument relies on the fact that these "things" are usually objects, and someone is not leaving them on -everyone's- property. Radio waves do not fit into this category.
If you are beaming your signals into my property, my house, my body, my kids, etc, I will damn well do what I please with them!
Yes, you have that right. You can do what you please with them.
I almost have a duty to intercept them and decode them and make sure they are not harmful in anyway.
I guess my question is this. Do you intercept and decode every radio wave that makes its way onto your property? Or only the ones you think/know contain useful information, like digital television? Do you decode amateur radio traffic? Do you simultaneously listen to every radio station that happens to be availible on your property? Do you decode your neighbors' microwave frequencies from their MICROWAVE? Do you listen to every police band radio transmission that you can find? Do you listen to ELF transmissions designed for communication with submarines? If you do all of this (and more), then I think you win. If not, it sounds like you are taking advantage of a service that is meant to be provided at a cost, not checking to ensure the signals are not harmful in any way.
If they arrived unsolicited in the physical mail they would be mine to keep by federal law no questions asked.
Right, but they don't. See my first paragraph.
You don't want me to do anything with them?? Then keep them off my land and out of my body, problem solved.
Or just don't worry about them. Problem solved. Or... listen to and decode ALL of them in order to make your argument valid. Problem solved.
These are physical radio waves, you are dumping them on my property and I can't do what I want with them?
Yep. That's basically it.
It's just too hard to masturbate to these small images.
Of course! This is SGI we're talking about! How about a 7.5MB TIFF?
Have fun jacking off.
I don't know about you who use WEP, but please STOP.
It is BROKEN.
Use IPSec. There are many tutorials for using IPSec in tunnel mode as a replacement for WEP. Google it. I wrote the 3rd or 4th one down - it isn't that hard, guys. Please don't use WEP, it really isn't smart.
Leonard Nemoy's album... Nothing beat's hearing ol' spock ripping out "Proud Mary"...
I think Spock singing the Bilbo Baggins song is much better than "Proud Mary"...
Download it here.
Just don't wear it in the rain!
No.
It wouldn't matter if you wore it in the rain, as long as the water didn't form a complete circuit with the ground (literally and figuratively).
The surface of the jacket may be at 80,000V, but that isn't going to be affected by rain drops; just like if someone threw a tennis ball at it - it would just bounce and fall off. The ball isn't going to be shocked, and neither would the rain.
... it won't work. At least, it won't work very well.
There are only 3 non-overlapping 802.11b channels, or 4 if you do it right. Either way though, that isn't 7.
However, if you can get it down to 3 or 4 links, don't use omnis anyway - use some little 8dBi-14dBi patch antennas, and do highly directional links to the radios you're bridging to. You only want to use omnis for client (think people moving around, unknown target direction) access.
The above is what the traditional thinkers would say. And what you were probably thinking, given the fact you said "point to point" link for the omni -> client links.
You can get around that barrier, however, if you do a single AP at your POP, and the bridged radios are simply looking to the AP for client access. The downside to this is that all the bridged radios will be sharing the bandwidth of a single channel, but you can have 7 (or more) links from your central antenna this way.
And if you're going to do it that way, get two 15dBi 180-degree sector antennas (cell-site quality), put them back-to-back, and do a combiner feed to your AP box.
I have a Soekris net4521, and it works great with PowerDsine's PD 6001 (part of their PD 6000 mid-span series).
They (PowerDsine) have been doing 802.3af since its earliest drafts, and it's been working as designed.
You say:
CD's don't have theatrical runs. Sure, many movies don't, but theater releases are where most movies make their big money.
I say:
Actually, video rentals (and sales) are where most movies make their money. It's something like 60/40:rentals/theater for most movies. Remember, rentals and sales just keep going. And going. And going. Theater runs are usually a few months at most.
Hell, we can get software from my school for so dirt cheap, ($30 for Windows XP Pro) they might as well give it away for free.
At my school, we get XP Pro and Office XP for $10 each. Not too shabby.