Got a paper by the "U.S. Army Corps of Engineers". It's 467 pages long and talks about electromagnetic impulses and how you can shield your facilities.
Got this from here. It's interesting to read if you know the basics.
The general idea is to set up an L-R-C circuit and destabilize it. For example, we know the change in emf (E) is related to the ke quantities (L = indcutance, R = resistance, C = capacitance) by:
L (d^2 I(t) / dt^2) + R (dI(t) / dt) + I(t)/ C = dE(t)/ dt
where I(t), and E(t) are time-variable
Under suitable conditions (cf. Spicer, 'Solar Physics', v53, p. 305, 1977) it is possible to induce a voltage 'spike' which is the equivalent of a HERF burst. In his Fig. 4, Spicer shows a profile of such a burst, generated using an ST-tokamak.
Of course, ST-tokamaks are not needed to accomplish this. It is fairly well known that *all* electrical circuits containing an inductance (L) are intrinsically explosive (cf. Alfven, 'Cosmic Plasma', p. 34, Dordrecht-Reidel, 1981).
Thus, if such a circuit is somehow disrupted, there is an explosive release of magnetic energy, of order:
W = 0.5 LI^2
Where L is the inductance (say of the inducting coil in the circuit) and I is the current. Say, for example, that L = 10 H (10 Henries) and I = 20A, then:
W = 0.5 (10H) (20A)^2 = 2000 J (Joules)
This is a fair amount of energy.
In practical HERF circuits one would incorporate a 'double layer' say by using a capacitor across which some maximum value of voltage V(D) might be applied. As the current is made to exceed a threshold value I(D), a voltage drop V(D) occurs across the capacitor up to the current I(ex) when it explodes and disrupts the current (cf. Alfven, ibid.).
When switched on, the current increases at rate:
dI/dt = (V(b) - R I/ L)
(V(b) is intrinsic emf of circuit)
Without the 'double layer' (capacitor) it reaches saturation at:
I(s) = V(b)/ R
If I(D) I(D) is given by:
dI/dt = [V(b) - V(D) - RI]/ L
The current will tend towards a saturation value:
I(s)' = [V(b) - V(D)]/ R
If I(ex)
The explosion will generate a high energy radio frequency pulse.
This pulse, if proximate enough to an electronic device (i.e. computer) will render it inoperable
1 6,167,386 Method for conducting an on-line bidding session with bid pooling
2 6,073,117 Mutual credit server apparatus and a distributed mutual credit system
3 6,058,417 Information presentation and management in an online trading environment
4 6,058,379 Real-time network exchange with seller specified exchange parameters and interactive seller participation
5 6,044,363 Automatic auction method
6 6,012,045 Computer-based electronic bid, auction and sale system, and a system to teach new/non-registered customers how bidding, auction purchasing works
This gives flash a much higher level of interactivity than it had befor.
You were able to generate flash movies with the "Generator Studio" from Macromeda which costs ~1100$, now one can do similar stuff with perl - for free.
This could mean a great revenue loss for Macromedia, can they do anything to put this off air, after releasing the swf format?
They are teaching us the Linux Kernel over here. Somehow big and complex and I wonder if something like the hurd would be a better choice...but I'm definitely enjoying it:)
Slashdot Mirror
Hey..I'm really proud to know that Linus seems to read /. then and when.
/. ... *grins*
Keep care you firstposters, one day you might not be able to compile a kernel on your machine again..just because you pissed off Linus on
Hi!
Here is the official Nasa Cassini Homepage
Many nice pictures and much more.
cheers
mike
...these are still the best, if you got the necessary fantasy.
I remember playing "3 Kingdoms" during a whole summer...anyone else?
And to make this a bit more informative, here is one of the largest MUD Link collections:
www.mudconnector.com
cheers
mike
The article fails to give a url for "Matra BAe Dynamics" which are the producers of this new emp weapon.
I did some internet research and found "BAE Systems" which seem to be the guys mentioned in the article.
The URL is http://www.baesystems.com/
cheers
mike
You know, if /. will be down the next few days, we know that this EMP thing really works ... and that the military does not like to get /.ted ;)
Got a paper by the "U.S. Army Corps of Engineers".
It's 467 pages long and talks about electromagnetic impulses and how you can shield your facilities.
Get it here (pdf, directly from the U.S. Army Corps of Engineers Homepage) or here (text format).
cheers
mike
Here is a very interesting article on
ELECTROMAGNETIC BOMB - A WEAPON OF ELECTRONIC MASS DESTRUCTION
It's a very interesting read. Explains everything, with many pictures (;-))
cheers
mike
Hi again ;-)
;-)
Here is an article about a guy who build such a weapon, mostly out of commercially available tools.
*pretends that he is not into these things*
cheers
mike
Want to build your own EMP weapon? This site sells building kits ;-)
I'm in no way affiliated with them.
cheers
mike
Got this from here. It's interesting to read if you know the basics.
The general idea is to set up an L-R-C circuit and destabilize it. For example, we know the change in emf (E) is related to the ke quantities (L = indcutance, R = resistance, C = capacitance) by:
L (d^2 I(t) / dt^2) + R (dI(t) / dt) + I(t)/ C = dE(t)/ dt
where I(t), and E(t) are time-variable
Under suitable conditions (cf. Spicer, 'Solar Physics', v53, p. 305, 1977) it is possible to induce a voltage 'spike' which is the equivalent of a HERF burst. In his Fig. 4, Spicer shows a profile of such a burst, generated using an ST-tokamak.
Of course, ST-tokamaks are not needed to accomplish this. It is fairly well known that *all* electrical circuits containing an inductance (L) are intrinsically explosive (cf. Alfven, 'Cosmic Plasma', p. 34, Dordrecht-Reidel, 1981).
Thus, if such a circuit is somehow disrupted, there is an explosive release of magnetic energy, of order:
W = 0.5 LI^2
Where L is the inductance (say of the inducting coil in the circuit) and I is the current. Say, for example, that L = 10 H (10 Henries) and I = 20A, then:
W = 0.5 (10H) (20A)^2 = 2000 J (Joules)
This is a fair amount of energy.
In practical HERF circuits one would incorporate a 'double layer' say by using a capacitor across which some maximum value of voltage V(D) might be applied. As the current is made to exceed a threshold value I(D), a voltage drop V(D) occurs across the capacitor up to the current I(ex) when it explodes and disrupts the current (cf. Alfven, ibid.).
When switched on, the current increases at rate:
dI/dt = (V(b) - R I/ L)
(V(b) is intrinsic emf of circuit)
Without the 'double layer' (capacitor) it reaches saturation at:
I(s) = V(b)/ R
If I(D) I(D) is given by:
dI/dt = [V(b) - V(D) - RI]/ L
The current will tend towards a saturation value:
I(s)' = [V(b) - V(D)]/ R
If I(ex)
The explosion will generate a high energy radio frequency pulse.
This pulse, if proximate enough to an electronic device (i.e. computer) will render it inoperable
Here is an interesting link about "HERF and other Radio Weapons".
Some of the links are dead, but those who are not give a really interesting read, about things like:
have fun!
cheers
mike
Even more Ebay patents...
1 6,167,386 Method for conducting an on-line bidding session with bid pooling
2 6,073,117 Mutual credit server apparatus and a distributed mutual credit system
3 6,058,417 Information presentation and management in an online trading environment
4 6,058,379 Real-time network exchange with seller specified exchange parameters and interactive seller participation
5 6,044,363 Automatic auction method
6 6,012,045 Computer-based electronic bid, auction and sale system, and a system to teach new/non-registered customers how bidding, auction purchasing works
You can find them here.
Got this from the United States Patent and Trademark Office
cheers
mike
Here are some more I found...
Integrated Auction for remote online bidders and live participants at an auction site
Information presentation and management in an online trading environment
I got this from the website of the European Patent Office
cheers
mike
This gives flash a much higher level of interactivity than it had befor.
You were able to generate flash movies with the "Generator Studio" from Macromeda which costs ~1100$, now one can do similar stuff with perl - for free.
This could mean a great revenue loss for Macromedia, can they do anything to put this off air, after releasing the swf format?
Anyhow, I'm looking forward to play with this.
cheers
mike
I did some research for a robot project some time ago, here are some cheap, small, light cams:
http://www.quasarelectronics.com/cmos_cameras.htm
http://www.mars-cam.com/frame/optical.html
http://www.supercircuits.com/
cheers
mike
Serious question: Wouldn't such a thing affect the earth orbit?
They are teaching us the Linux Kernel over here. Somehow big and complex and I wonder if something like the hurd would be a better choice...but I'm definitely enjoying it :)
We don't have such a thing as internet. doh.
www.webwirelessnow.com claims to provide everyone free internet access, who has a cell phone.
Might be worth to check out.
cheers
mike