Follow Slashdot stories on Twitter


Forgot your password?
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 internet speed test! ×

Comment Re:Jump That Gun (Score 1) 102

In the bullet cluster the stars passed right through each other as well it is only the dust clouds in the galaxies that really exchanged momentum. So extra brown dwarfs as dark matter probably isn't in conflict with the bullet cluster.

As you point out BBN and CMB measurements do suggest that dark matter in non-baryonic. Another one to add to that list is structure formation, the large structures of the universe would be very different if the dark matter was baryonic.

Comment Re:I hope there'll be no supersymmetry (Score 1) 89

Well theres neutrino oscillations, g-2 of the muon, baryogenisis, dark matter, dark energy and inflation to name a few.

Then there is the hierarchy problem and flavour problems which aren't experimental observations so you might not want to count them and thats not even touching the problem of trying to get a consistent theory for the standard model and gravity together.

Submission + - Monster hurricanes reached U.S. Northeast during prehistoric periods of ocean wa (

Ugmug writes: "Intense hurricanes possibly more powerful than any storms New England has experienced in recorded history frequently pounded the region during the first millennium, from the peak of the Roman Empire into the height of the Middle Ages, according to a new study. The findings could have implications for the intensity and frequency of hurricanes that the U.S. East and Gulf coasts could experience as ocean temperatures increase as a result of climate change, according to the study’s authors."

Comment Re:Dark? (Score 1) 119

Yes it would mean there is half as much dark matter in the milky way as we previously would have thought but then there's half as much normal matter as well so you get the same ratio. Of course this has no impact on the total dark matter budget of the universe so it doesn't really have any bearing on our understanding of dark matter.

Comment Re:Trivial observation (Score 1) 133

You should never take the logarithm of a dimensionful quantity like seconds. Clearly some choice of units is implied and really we should have log(t/1s) or log(t/1ms) or something which would then make the score unitless.

You need learn to cut through the hocus pocus and analyze the actual underlying equation before the Oz Sauce is ladeled on. You can well imagine that those who actually understand programming metrics are holding their sides laughing at those who are taking it seriously.

and you need to go take some remedial math lessons if you think log(0) = 1.


Submission + - Ubuntu 11.04 released (

tandiond writes: "Finally...
"Canonical today announced the upcoming release of the Ubuntu operating system on April 28, 2011 for public download. Ubuntu 11.04 introduces Unity, Ubuntu’s new interface, which is simpler, easier to use and more beautiful than previous editions of Ubuntu. This is the culmination of two years’ design and engineering effort by Canonical and the Ubuntu community. Ubuntu 11.04 stands out from its competitors as a genuine free alternative to Windows, allowing users to personalize their PC with free and paid apps in a way that’s proven hugely popular in the smartphone and tablet market."

It is a bit hard to download the iso image. Several attempts to click the link failed. Looks like The download link was loaded with enthusiast users already."

Submission + - Happy ICT Girls Day! (

jorrizza writes: Today, it's international ICT girls day. For every fourth Thursday in April, beginning this year, the International Telecommunication Union has established a global ICT ‘Girls Day’. WITNET supplies a toolkit women can use with all the information needed for running a national ‘Girls in ICT Day’.

New Evidence Presented For Ancient Fossils In Mars Rocks 91

azoblue passes along a story in the Washington Post, which begins: "NASA's Mars Meteorite Research Team reopened a 14-year-old controversy on extraterrestrial life last week, reaffirming and offering support for its widely challenged assertion that a 4-billion-year-old meteorite that landed thousands of years ago on Antarctica shows evidence of microscopic life on Mars. In addition to presenting research that they said disproved some of their critics, the scientists reported that additional Martian meteorites appear to house distinct and identifiable microbial fossils that point even more strongly to the existence of life. 'We feel more confident than ever that Mars probably once was, and maybe still is, home to life,' team leader David McKay said at a NASA-sponsored conference on astrobiology."

Comment Re:There WILL be unbreakable DRM, heres how: (Score 1) 443

A version of the Legend of Mir server was leaked/stolen. It was the complete server program (I'm not sure if the source code was stolen too) and that allowed completely private servers to work with the existing client. These servers could then change the stats on items, change what mobs spawned where and create new mobs. I'm not sure how difficult it would have been or if it was possible to create new maps and graphics etc without other tools.

Comment Re:Philosophy is fundamental (Score 1) 515

Let me add that I am very disappointed in Science - Since it really only started in the 1920's, it made huge strides by converting the occult philosophies of relativity and quantum mechanics into rigorous systems in its first few years of existence, and then petered out, having done noting of equal import since. Science is nearly a hundred years old now, and in the last sixty, about the best it can boast about is remaking the occult mysticism of the continental drift doctrine into properly falsifiable Plate Tectonics. Really, it's Tragic.

I would argue that while it is debatable when exactly science started it was before the 1920's. Newton was certainly important but I agree that he wasn't really a modern scientist. There was however plenty of science done before the 1920's much of classical mechanics and wave dynamics, rudimentary atomic theory and thermodynamics was all good science and done well before the 1920's.

The theories of relativity and quantum mechanics were never occult philosophies describing them as such really ignores the history of how they were discovered and formalised. They were both very much science from the start, falsifiable hypothesis created to explain gaps in current theories to explain experimental evidence. That were then confirmed by experiment before being widely accepted.

I don't know where you get the idea that nothing has been done in the last 60 years. For a start the formalism of QFT and into making predictions and its amazing agreement with experiment are within that time frame. The standard model including precision measurements of CP violation, most of QCD and neutrino physics (the discovery of their mass very recent) are all new. Cosmology and astrophysics have also made huge progress recently as has condensed matter and nano technology physics. These are all just examples from physics since I can name these off the top of my head but the other sciences have also been busy.


Breaking the Squid Barrier 126

An anonymous reader writes "Dr. Steve O'Shea of Auckland, New Zealand is attempting to break the record for keeping deep sea squid alive in captivity, with the goal of being able to raise a giant squid one day. Right now, he's raising the broad squid, sepioteuthis australis, from egg masses found in seaweed. This is a lot harder than it sounds, because the squid he's studying grow rapidly and eat only live prey, making it hard for them to keep the squid from becoming prey themselves. If his research works out, you might one day be able to visit an aquarium and see giant squid."

Porsche Unveils 911 Hybrid With Flywheel Booster 197

MikeChino writes "Porsche has just unveiled its 911 GT3 R Hybrid, a 480 horsepower track vehicle ready to rock the 24-hour Nurburgring race this May. Porsche's latest supercar will use the same 911 production platform available to consumers today, with a few race-ready features including front-wheel hybrid drive and an innovative flywheel system that stores kinetic energy from braking and then uses it to provide a 160 horsepower burst of speed. The setup is sure to offer an advantage when powering out of turns and passing by other racers."

Grateful Dead Percussionist Makes Music From Supernovas 57

At the "Cosmology At the Beach" conference earlier this month, Grammy-award winning percussionist Mickey Hart performed a composition inspired by the eruptions of supernovae. "Keith Jackson, a Berkeley Lab computer scientist who is also a musician, lent his talents to the project, starting with gathering data from astrophysicists like those at the Berkeley Lab’s Nearby Supernova Factory, which collects data from telescopes in space and on earth to quickly detect and analyze short-lived supernovas. 'If you think about it, it's all electromagnetic data — but with a very high frequency,' Jackson said of the raw data. "What we did is turn it into sound by slowing down the frequency and "stretching" it into an audio form. Both light and sound are all wave forms — just at different frequencies. Our goal was to turn the electromagnetic data into audio data while still preserving the science.'"
Classic Games (Games)

M.U.L.E. Is Back 110

jmp_nyc writes "The developers at Turborilla have remade the 1983 classic game M.U.L.E. The game is free, and has slightly updated graphics, but more or less the same gameplay as the original version. As with the original game, up to four players can play against each other (or fewer than four with AI players taking the other spots). Unlike the original version, the four players can play against each other online. For those of you not familiar with M.U.L.E., it was one of the earliest economic simulation games, revolving around the colonization of the fictitious planet Irata (Atari spelled backwards). I have fond memories of spending what seemed like days at a time playing the game, as it's quite addictive, with the gameplay seeming simpler than it turns out to be. I'm sure I'm not the only Slashdotter who had a nasty M.U.L.E. addiction back in the day and would like a dose of nostalgia every now and then."

Slashdot Top Deals

Duct tape is like the force. It has a light side, and a dark side, and it holds the universe together ... -- Carl Zwanzig