Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×

Comment Re:I am having a vision of the future... (Score 3, Interesting) 296

He said mitigated, not prevented. I've (unintentionally) measured the oscillating light output of an incandescent while I was developing an optical trigger circuit for my last job, the intensity dropped by ~20% for this particular bulb (20W desk lamp) during the AC zero crossing. The flickering was 100Hz (funnily enough) - higher than most peoples' periphery will notice.

Sci-Fi

Submission + - Physicists Invent Working Tractor Beam, World Becomes Instantly More Awesome (geekosystem.com)

anavictoriasaavedra writes: We have tractor beams now! Like where you zap a thing with a laser and pull it toward you with beam power? We have those now. Even though they are super tiny and effective only on microscopic items like silica spheres suspended in water for right now, they are still working tractor beams.

Submission + - Boeing's CHAMP missile uses radio waves to remotely disable PCs (boeing.com) 1

Dupple writes: During last week's test, a CHAMP (Counter-electronics High-powered Microwave Advanced Missile Project) missile successfully disabled its target by firing high power microwaves into a building filled with computers and other electronics.

On Oct. 16th at 10:32 a.m. MST a Boeing Phantom Works team along with members from the U.S. Air Force Research Laboratory (AFRL) Directed Energy Directorate team, and Raytheon Ktech, suppliers of the High Power Microwave source, huddled in a conference room at Hill Air Force Base and watched the history making test unfold on a television monitor.

CHAMP approached its first target and fired a burst of High Power Microwaves at a two story building built on the test range. Inside rows of personal computers and electrical systems were turned on to gauge the effects of the powerful radio waves.

Seconds later the PC monitors went dark and cheers erupted in the conference room. CHAMP had successfully knocked out the computer and electrical systems in the target building. Even the television cameras set up to record the test were knocked off line without collateral damage.

Comment Re:Tubes Eaten Away (Score 1) 358

Actually the beryllium is primarily used for another purpose. It is a low Z material which means that when it gets into the plasma (via wall ablation) and ionises, it only has a few electrons to lose. Lots of electrons = lots of bremsstrahlung = significant energy loss. Also very high Z impurities which don't fully ionise lead to even more significant loses through line emission. High Z pollution of the plasma can lead to a radiative collapse of the plasma. For more info see here:

http://www.carolusmagnus.net/papers/2005/docs/koslowski_operational_limits.pdf

Submission + - UK seeks to repeal 'SOPA-like' site-blocking (zdnet.com) 1

ShadowCat8 writes: "The UK government has said it will abandon legislative plans to block copyright-infringing websites — proposals reminiscent of the draft Stop Online Piracy Act (SOPA) Bill put before the US House of Representatives late last year.
Does that mean an end to site blocking? Of course not. The courts just don't need the extra helping hand to make it happen any more."

Real Time Strategy (Games)

Submission + - Did you like Total Annihilation? Help KickStart Planetary Annihilation!

An anonymous reader writes: RTS Total Annihilation (http://en.wikipedia.org/wiki/Total_annihilation) was released in 1997 and 7 years later was still winning awards (http://en.wikipedia.org/wiki/Total_annihilation#Awards). Now, the team that built both TA and its successor, Supreme Commander (http://en.wikipedia.org/wiki/Supreme_Commander_%28game%29), wants to build a modern RTS in the same vein with your help via KickStarter (http://www.kickstarter.com/projects/659943965/planetary-annihilation-a-next-generation-rts). Here's some raw meat to get the /. crowd excited: Linux support at launch and DRM-free (http://www.kickstarter.com/projects/659943965/planetary-annihilation-a-next-generation-rts/posts, buried).
Hardware

Submission + - TV with 16 times resolution of HDTV passed by UN standards body (techworld.com) 1

Qedward writes: A new television format that has 16 times the resolution of current High Definition TV has been approved by an international standards body, Japanese sources said earlier today.

UHDTV, or Ultra High Definition Television, allows for programming and broadcasts at resolutions of up to 7680 by 4320, along with frame refresh rates of up to 120Hz, double that of most current HDTV broadcasts. The format also calls for a broader palette of colours that can be displayed on screen.

The video format was approved earlier this month by member nations of the International Telecommunication Union, a standards and regulatory body agency of the United Nations, according to an official at NHK, Japan's public broadcasting station, and another at the Ministry of Internal Affairs and Communications. Both spoke on condition of anonymity.

Slashdot Top Deals

Beware of Programmers who carry screwdrivers. -- Leonard Brandwein

Working...