Please create an account to participate in the Slashdot moderation system


Forgot your password?
Slashdot Deals: Deal of the Day - Pay What You Want for the Learn to Code Bundle, includes AngularJS, Python, HTML5, Ruby, and more. ×

Chinese Researchers Reveal Active Stealthy Material ( 137

hackingbear writes: Even after billions and billions of dollars spent on the stealthy skin used on F-22, F-35 and B-2, the material has weaknesses, and one of those is ultra-high-frequency (UHF) radar, which can pick up traces of the plane that other radar misses. Chinese researchers came to the rescue and created a material just 5/16 of an inch thick that can safeguard stealth planes against UHF detection. The material tunes itself to a range of detection frequencies, protecting against a large swath of radar scans. What's even more amazing? They published this seemingly top secret invention wide open in the Journal of Applied Physics .

Comment Re:Mixed (Score 3, Interesting) 350

While I also hate tailgaters, as a European who spends many months each year in the U.S. I have to say average American driving habits sometimes make me pull my hair out. I know driving rules and habits are different, still, if most drivers would at least try to keep to the right, to at least try to drive fast enough to be close to the speed limit on highways (not forcing 65-goers to constantly change lanes), to signal lane changes (left and right, yes, both), and not to break randomly on the open road (i.e., even when there's nobody ahead for hundreds of yards), well then maybe I wouldn't curse so much while driving. Oh, and for f* sake, if you enter the freeway and don't plan to leave at the next exit then you might sometimes consider shifting left 1-2 lanes.

You know, it's interesting--I would say there are even huge changes in driving habits between different parts of the country. This is obviously all anecdotal, but my experiences in parts of the midwest have been that people are very good about staying out of the left lane and allowing people to pass them as necessary. OTOH, in North Carolina, people are very bad about that. There are big differences in tailgating, use of the horn, passing on the right, etc. It seems to b e a fairly "southern" driving trait (I've heard northeasterners comment about this) to swing widely in the opposite direction before turning.

I just wish people would freaking pay attention at stop lights and watch for the light to change to green. It's almost always this excruciating ballet of watching the cars ahead of me "Oh, the light changed? *2 seconds to process before starting to accelerate" followed by the car behind them seeming to only realize it's time to go after their own two second pause. I'm hoping for network aware (or just aware!) autonomous cars that can all start rolling at the same time after a light change.

Submission + - SPAM: Wearables take to the sky with easyJet smart uniforms

stephendavion writes: easyJet has unveiled its 2016 uniforms that feature in-built sensors and LED lights. The garments will be used by engineers, crew and pilots, and will feature a set of microphones so staff can communicate with each other. Cabin crew's uniforms will also be fitted with LED lights on the shoulders that continuously display the flight's number and destination.

Submission + - Prison Hack Show Attorney-Client Privilege Violation (

Advocatus Diaboli writes: "An enormous cache of phone records obtained by The Intercept reveals a major breach of security at Securus Technologies, a leading provider of phone services inside the nation’s prisons and jails. The materials — leaked via SecureDrop by an anonymous hacker who believes that Securus is violating the constitutional rights of inmates — comprise over 70 million records of phone calls, placed by prisoners to at least 37 states, in addition to links to downloadable recordings of the calls. The calls span a nearly two-and-a-half year period, beginning in December 2011 and ending in the spring of 2014."

"Particularly notable within the vast trove of phone records are what appear to be at least 14,000 recorded conversations between inmates and attorneys, a strong indication that at least some of the recordings are likely confidential and privileged legal communications — calls that never should have been recorded in the first place. The recording of legally protected attorney-client communications — and the storage of those recordings — potentially offends constitutional protections, including the right to effective assistance of counsel and of access to the courts."

Submission + - Getting Started with GNU Radio (

An anonymous reader writes: Software Defined Radio must be hard to create, right? Tools like GNU Radio and GNU Radio Companion make it much easier to build radios that can tune AM, FM, and even many digital modes. Of course, you need some kind of radio hardware, right? Not exactly. Hackaday has one of their video hands on tutorials about how to use GNU Radio with no extra hardware (or, optionally, a sound card that you probably already have). The catch? Well, you can't do real radio that way, but you can learn the basics and do audio DSP. The next installment promises to use some real SDR hardware and build an actual radio. But if you ever wanted to see if it was worth buying SDR hardware, this is a good way to see how you like working with GNU Radio before you spend any money.

I have a theory that it's impossible to prove anything, but I can't prove it.