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Submission + - Slashdot Beta SUCKS (

DroolTwist writes: My scoop? Slashdot beta sucks. I'm definitely joining slashcott. Thanks for the years of entertaining and knowledgeable discussion, slashdotters. While I mainly lurked, I learned so much from discussions.

Submission + - Graphene conducts electricity ten times better than expected ( 1

ananyo writes: Physicists have produced nanoribbons of graphene — the single-atom-thick carbon — that conduct electrons better than theory predicted even for the most idealized form of the material. The finding could help graphene realize its promise in high-end electronics, where researchers have long hoped it could outperform traditional materials such as silicon.
In graphene, electrons can move faster than in any other material at room temperature. But techniques that cut sheets of graphene into the narrow ribbons needed to form wires of a nano-scale circuit leave ragged edges, which disrupt the electron flow. Now a team led by physicist Walt de Heer at the Georgia Institute of Technology in Atlanta has made ribbons that conduct electric charges for more than 10 micrometres without meeting resistance — 1,000 times farther than in typical graphene nanoribbons. The ribbons made by de Heer's team in fact conduct electrons ten times better than standard theories of electron transport they should, say the authors.


Submission + - Zopfli compresses 3-8% more than gzip at a heavy CPU cost (

more writes: The Zopfli Compression Algorithm is a new open sourced general purpose data compression library that got its name from a Swiss bread recipe. The output generated by Zopfli is typically 3–8% smaller compared to zlib at maximum compression, and we believe that Zopfli represents the state of the art in Deflate-compatible compression. Zopfli is bit-stream compatible with compression used in gzip, Zip, PNG, HTTP requests, and others.

Submission + - A Supersonic Ping Pong Gun (

Frans Faase writes: "The Ping Pong gun or Ping Pong bazooka has been a popular and compelling tool for physics education. However, the design necessarily means the ball emerges at subsonic speed. The design has been modified to include a pressure chamber and a convergent-divergent nozzle, similar to the design of some supersonic wind tunnels. This modification results in supersonic speeds. The current design has achieved a launch speed of 406 m/sec, about Mach 1.23."

Submission + - Crowdsourcing Mars Images (

alancronin writes: In conjunction with BBC's recent astronomy television program: Stargazing Live comes a citizen science project to analyze images of Mars. Zooniverse has setup a site that allows people to explore the surface of Mars in incredible detail with pictures taken from the HiRISE (High Resolution Imaging Science Experiment) camera on board the Mars Reconnaissance Orbiter. HiRISE can image Mars with resolutions of 0.3 m/pixel (about 1 foot), resolving objects below a meter across.

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