Follow Slashdot blog updates by subscribing to our blog RSS feed


Forgot your password?

Submission + - Transparent Aluminum is 30 years late, but finally here. ->

Charliemopps writes: Though it's 30 years late, Transparent Aluminum, as predicted in the 1986 film Star Trek IV: The Voyage Home, may finally be here. There have been many attempts to create transparent metals in the pass few years, and some have been somewhat successful, if only for a few femtoseconds.

But now, by modifying metals like Silver and Aluminum at the subwavelength scale, researchers are developing "Meta-Materials" that causes light to interact with these metals in new and interesting ways. One of their more promising goals is to create a "perfect lens" which would allow an every day person to view things as small as a virus with the naked eye. Will this eventually lead to whale sized fish tanks as clear as glass with the strength of aluminum? Only time will tell.

Link to Original Source

Submission + - Elon Musk offers explanation for loss of Falcon 9 mission

garyisabusyguy writes: This Forbes article provides the best analysis of the loss of the last Falcon 9 mission based on information released by Elon Musk.
1. Sound triangulation led them to identify a strut holding helium tank as root cause where the falling helium tank pinched a line causing overpressure in the LOX tank.
2. The failure occurred at 2,000 pounds of force, and the struts were rated at 10,000 pounds of force. They initially dismissed this as a cause until sounds triangulation pointed back to the strut
3. Further testing of struts in stock found one that failed at 2,000 pounds of force, with further analysis identifying poor grain structure in the metal, which caused weakness
4. It will be months before the next launch while SpaceX goes over procurement and QA processes all struts and bolts, and re-assesses any "near misses" with Air Force and NASA
5. Next launch will include failure mode software, which will allow recovery of the Dragon module during loss of the launch vehicle since they determined that it could have saved the Dragon module in this lost mission

I'm still waiting for them to stick the landing,which could be a way in the future

Submission + - SpaceX Falcon 9 CRS-7 Failure: Broken Strut on Helium Tank->

Teancum writes: In a press conference held by SpaceX CEO Elon Musk, he released some findings about what caused the explosion of the launch vehicle carrying the CRS-7 Dragon spacecraft on its way to the International Space Station.

Apparently a Helium tank was held in place inside of the Liquid Oxygen tank on the 2nd stage that failed while it was under going the nearly 32 m/s^2 acceleration (about 3.2 time Earth's gravity acceleration). This part was manufactured by an undisclosed 3rd party contractor for SpaceX and was rated to being able to hold up to 10,000 PSI, but failed at 2000. In the past week, SpaceX has been "testing an enormous number" of this exact strut that is currently in their inventory intended for future flights, and confirmed that at least one of them failed in a similar fashion where metallurgical analysis has been performed trying to identify potential defects.

It was also confirmed in this press conference that the SpaceX Dragon spacecraft was tracked after the explosion and remained intact until it could no longer be followed by the tracking station due to it falling below the horizon. The Dragon could have survived the explosion and been recovered, except that the on-board guidance computer was not programmed to deploy the parachute during ascent. In the future, SpaceX plans on having this parachute deployment as a standard procedure even on cargo missions in the event of a rocket failure.

Link to Original Source

Comment Re: "Or Tor?" (Score 1) 260

A daily database task? Are you in sales?

You do know how TOR works, right?

Without a doubt certain agencies are capable of decrypting TLS/SSL and some probably have a good chance of identifying high-value TOR targets in a serious effort but I am pretty sure your ISP or even my country's National Intelligence Service lacks the capability to decrypt TOR traffic and the encrypted payload traffic, let alone being capable of orchestrating meaningful global timing attacks to capture all and everything in a useable daily-database-task format with a spiffy frontend.

Obviously if you go over TOR to UK based sites the packets received by the website can indeed be stored but would still be encrypted unless you do http ofcourse but in that case, you are in sales. Suppose hell froze over, packets are decrypted one way or another and The Man finds out too much about you and it foils your evil-take-over-the-world plan you could consider a second hand laptop that's not linkable to your identity in any way. Run and go about your merry little evil business from some free wifi spot in the sun but mind the CCTV's and -avoid- doing anything that potentially could expose a hint of your true identity, like checking your fb stats (sales). If you are really paranoid about selling that suitcase nuke you could chain some vpn's you bought over TOR using bitcoins, scratch credit cards or paid for with blowjobs (sales again!) and mix some proxies in there for the hell of it. They can daily-database-task all they want but they will have a significant hard time finding out wtf you are doing and an even harder time discovering your true identity.

Submission + - Could Prison be a Killer App for an Apple Watch?

theodp writes: After seeing all the ways cops reportedly screwed up the manhunt for escaped killers David Sweat and (the late) Richard Matt, one wonders what could be done to prevent a recurrence of the need to have 1,200 police search 22 square miles for 1 man. If you've been to the movies lately, perhaps the tracking device for the Indominus Rex in Jurassic World comes to mind. Or could it be that a next-gen Apple Watch — with some combination of location tracking, cameras, and biometrics — is just what the doctor ordered for tracking incarcerated prisoners? In a world where Google is encouraging the use of technology to keep tabs on babies and pets, shouldn't prisoners be fair game for surveillance technology? Any ideas what that might look like?

Comment Re:If there ever is a real collision risk... (Score 1) 76

It will be known among intergalactic circles as "Man's Final Fiasco". Boards and committees of useless heads will be created to 'go over the science and verify the numbers', some nut jobs will claim it's a hoax while others will get upset if the interrogated scientist wears the wrong shirt.

Submission + - Reddit blocked in China, Wayback Machine blocked in Russia->

Mark Wilson writes: It is becoming increasingly common for governments around the world to block access to websites they don’t approve of for one reason or another. The most frequent censor is China, and the latest site to fall victim to the Great Firewall of China is Reddit. If you're not able to pop over to China to check whether the site is blocked, you can use Blocked In China to test whether any site is accessible from within the country.

This is not the only site which people are having trouble accessing. Over in Russia, the Internet Archive — responsible for the nostalgia-inducing Wayback Machine — is also blocked. While the blocking of Reddit in China has probably been done on purpose, the same may not necessarily be true in Russia.

Link to Original Source

Submission + - Red Hat CEO Publishes Open Source Management Memoir->

ectoman writes: Red Hat CEO Jim Whitehurst has just published The Open Organization , a book that chronicles his tenure as leader of the world's largest open source company. The book aims to show other business leaders how open source principles like transparency, authenticity, access, and openness can enhance their organizations. It's also chock full of interesting anecdotes about daily life inside Red Hat. Whitehurst joined Red Hat in 2008 after leaving Delta Airlines, and he says his time working in open source has changed him. "I thought I knew what it took to manage people and get work done" he writes in The Open Organization. "But the techniques I had learned, the traditional beliefs I held for management and how people are taught to run companies and lead organizations, were to be challenged when I entered the world of Red Hat and open source." All proceeds from the book benefit the Electronic Frontier Foundation, and is hosting free book club materials.
Link to Original Source

Submission + - Academics build a new Tor client designed to beat the NSA->

An anonymous reader writes: In response a slew of new research about network-level attacks against Tor, academics from the U.S. and Israel built a new Tor client called Astoria designed to beat adversaries like the NSA, GCHQ, or Chinese intelligence who can monitor a user's Tor traffic from entry to exit. Astoria differs most significantly from Tor's default client in how it selects the circuits that connect a user to the network and then to the outside Internet. The tool is an algorithm designed to more accurately predict attacks and then securely select relays that mitigate timing attack opportunities for top-tier adversaries.
Link to Original Source

"Well, it don't make the sun shine, but at least it don't deepen the shit." -- Straiter Empy, in _Riddley_Walker_ by Russell Hoban