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+ - openSUSE 13.1 released, reviewed!->

Submitted by sfcrazy
sfcrazy (1542989) writes "openSUSE teams just announced the release of openSUSE 13.1 and it has already been reviewed. There are some core points which sets openSUSE apart from populist OS Ubuntu. While Ubuntu has become more or less Canonical owned project, openSUSE is becoming more and more community driven project and looking at the recent controversies around Ubuntu and their move towards mobile platforms, openSUSE seems to be a great option for desktop users."
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Comment: Re:It's the promises you have to look out for (Score 1) 86

Qt is publicly developed on Gitorious (https://qt.gitorious.org/), accepting merge requests (with code review). Even if you can't get them to accept patches into the 'official' codebase, you could always just branch it and fix the bugs for yourself ...

Comment: Re:Same as last time (Score 4, Insightful) 559

by MasterPatricko (#43881961) Attached to: No, the Tesla Model S Doesn't Pollute More Than an SUV

Small fuel efficient cars have a huge problematic bug , that has never been worked out. They're dangerous, hard to spot, slow to get out of the way

As evidenced by your own statement it's the huge speeding behemoths that are actually the ones causing the accidents, even if it's those around them that suffer the consequences ... and yet you claim it's the small cars that should be removed from the road?

Comment: Re:What this means (Score 2) 259

A symmetry under X means the system under test is unchanged (ie the same physical laws work, your predictions are still correct) when you do X.

A simple example is the symmetry under spatial translation -- if your experiment still behaves the same way if it's moved a meter to the left, it has "spatial translational symmetry". This symmetry isn't exactly true on the surface of the earth because of variations in the gravitational field etc., but on a small scale for lab experiments it's true, and in deep space it's certainly true. Another example is symmetry under spatial rotation -- your experiment doesn't care whether you face it north or east.

By a very cool bit of maths called Noether's Theorem, you can show that for every symmetry that a system has, there is an associated conserved quantity. So systems with spatial translation symmetry will show conservation of momentum. Systems with time translation symmetry exhibit conservation of energy -- within that system, you can't create or destroy energy. Rotational symmetry results in conservation of angular momentum.
https://en.wikipedia.org/wiki/Symmetry_(physics)

Much of modern physics is built around identifying the symmetries that the universe (or parts of the universe) obeys, the associated conserved quantities, and what happens when those symmetries are broken -- for example the maths leading to the Higgs boson. Currently we believe the universe overall obeys C(harge) P(arity) T(ime) symmetry, that is if you change matter for antimatter, flip everything spatially (as in a mirror), and reverse the direction of time, everything would be the same. This recent experiment shows that time symmetry by itself is not obeyed -- if you only reverse the direction of time, this particular particle collision is not the same.

Comment: Re:Quick question then (Score 1) 259

Photons moving through a medium are "slowed down" by interactions of the electromagnetic field with the atoms of the medium.

Remember that a photon is just localised electromagnetic energy. In a medium, the electromagnetic fields behave differently than in a vacuum, because of the all the atoms with their various charged bits (protons, electrons) -- there is a different "resistance" to changing the field strength because the field has to move the atoms as well. This resistance to changing the field strength is what determines the speed of the electromagnetic wave.
In mathematical terms we say photons (electromagnetic waves) travel at speed c/n, where n is the refractive index of the material, and n is sqrt(epsilon * mu), where epsilon and mu are the relative permittivity and permeability (to electromagnetic fields) of the medium.

A simpler, but wrong, model you might hear is that the photons are being absorbed and reemitted many times as it passes through the medium, all while travelling at c between the atoms, but that can't be really true because otherwise light would be highly directionally spread out after exiting any high refractive index material, but we can see straight through glass and water.

Linux

+ - openSUSE 12.2 is out!->

Submitted by
jospoortvliet
jospoortvliet writes "Two months of extra stabilization work have resulted into a stellar release, chock-full of goodies, yet stable as you all like it.

The latest release of the world's most powerful and flexible Linux Distribution brings you speed-ups across the board with a faster storage layer in Linux 3.4 and accelerated functions in glibc and Qt, giving a more fluid and responsive desktop. The infrastructure below openSUSE has evolved, bringing in newly matured technologies like GRUB2 and Plymouth and the first steps in the direction of a revised and simplified UNIX file system hierarchy. Users will also notice the added polish to existing features bringing an improved user experience all over. The novel Btrfs file system comes with improved error handling and recovery tools. KDE has improve its stability, GNOME 3.4, developing rapidly, brings smooth scrolling to all applications and features a reworked System Settings and Contacts manager while XFCE has an enhanced application finder.

Download openSUSE 12.2 from any of our mirrors."

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Comment: The real reason the judge was annoyed (Score 4, Interesting) 227

by MasterPatricko (#39733261) Attached to: Judge Grudgingly Awards $3.6 Million In DRM Circumvention Case

Instead, Plaintiff merely submitted 252 raw pages of documents obtained through discovery without so much as a summary of the information contained in those documents or an explanation to the Court how any of the line items contained therein directly relate to Kumar’s UMaple activities.

Seems to me that's the real reason the judge wasn't feeling like awarding any more damages, not some kind of protest against the DMCA or statutory damages.

Comment: Re:Strange chemicals lyin' in ponds (Score 1) 97

by MasterPatricko (#39046561) Attached to: Did Life Emerge In Ponds Rather Than Ocean Vents?

Listen, strange chemicals lyin' in ponds distributin' ions is no basis for a system of life. Supreme biological diversity derives from a mandate from the creator, not from some farcical aquatic ceremony!

Oh! Come and see the violence inherent in the system! Help! Help! I'm being repressed!

Man is the best computer we can put aboard a spacecraft ... and the only one that can be mass produced with unskilled labor. -- Wernher von Braun

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