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+ - The Earth is a gravitational wave detector->

Submitted by b30w0lf
b30w0lf (256235) writes "Gravitational wave detection—i.e. the detection of propagating ripples in spacetime—is a hot subject these days with ground-based interferometer experiments like LIGO active, and hopes for a space interferometer like LISA. But, physicist Freeman Dyson proposed back in 1969 that the earth itself could be used as a gravitational wave detector. The idea is behind the approach is that gravitational waves impact the earth’s crust, causing potentially detectable seismic waves. Using Dyson’s approach, Physicists at Harvard and NINP, Florence were able to put an upper limit on the intensity of gravitational background radiation based on a year of observational seismic data. The upper limit they found improved currently laboratory upper limits by 9 orders of magnitude."
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Comment: Re:Why can't I turn off the ads? Otherwise...OK (Score 1) 384

by Ptolemarch (#42822153) Attached to: Experience the New Slashdot Mobile Site

Normal Slashdot has a "disable ads" button if you have good karma. I believe that is what they are rederring to.

Indeed. That's Maker mode, as I mentioned, though Maker mode doesn't get offered for merely good karma.

I've implemented ad hiding for Maker mode, but if I can reproduce a bug with it, I'll fix it.

Comment: Makes sense, but then what wouldn't? (Score 2) 114

by Ptolemarch (#37341682) Attached to: Google Acquires Zagat

The acquisition makes sense, in that they obviously want ratings of restaurants (and other places) on Maps, and they've already changed tactics there once or twice. This'll pretty much take care of that problem.

I start to wonder, though, whether any acquisition by Google wouldn't "make sense". Their purchase of Motorola Mobility makes sense, too (though not to everyone). When you buy a consumer electronics company and a restaurant guide in consecutive months, what won't you buy? What acquisitions won't "make sense"?

Google buys Pacific Gas and Electric for $20B. Makes sense...

+ - Wicked Lasers Sells One-Watt Green Laser->

Submitted by
cogent
cogent writes "Wicked Lasers, famous for last year's 1000mW handheld blue laser, and infamous for its handling of six-month-long backorders, is now selling a green version. There are three power levels, each priced at $1/mW. Since the eye is far more sensitive to green than to blue, this is pretty much the state of the art in putting-dots-on-stuff technology. Wicked Lasers sent out an email, promising to handle backorders much better this time."
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Power

+ - New Life for Waste Heat from Crematoriums

Submitted by
Hugh Pickens writes
Hugh Pickens writes writes "Justin Nobel writes that waste heat from a local crematory will soon heat water that will be piped to a nearby recreation center to heat the pool and the rest of the facility, saving about $23,000 a year in heating costs but some are asking if the process honors the dead or exploits them. “People are dying anyway, and many choose to be cremated," says Ceridwen John, the climate change manager in Redditch, England where the system is being installed. "Our options are to expel the waste heat into the atmosphere or to do something useful with it.” Redditch is acting in response to recent European Union legislation that requires crematories to reduce mercury emissions by 50 percent by 2013. Extracting the harmful mercury from dental fillings requires cooling flue gas from 800 degrees Centigrade to 150 degrees so the waste heat is pumped through a heat exchanger where it can be used to generate power. Will crematory heat ever become popular in the US? "Some grieving families like the idea of their loved ones 'giving back something'," says Tim Morris, chief executive of the Institute of Cemetery and Crematorium Management. "I see that becoming predominant, and this research as an opportunity to do something innovative and respectful to the funeral mourning process.""
Open Source

+ - DOD Releases Open Source Development Guide->

Submitted by
BrandiCook
BrandiCook writes "The Department of Defense (DoD) has weighed in with its own support for open source. The DoD provides a nice analogy: “Imagine if only the manufacturer of a rifle were allowed to clean, fix, modify or upgrade that rifle. The military often finds itself in this position wit taxpayer funded, contractor developed software: one contractor with a monopoly on the knowledge of a military software system and control of the software source code.” Open technology offers increased agility and flexibility, fast delivery, increased innovation, reduced risk, lower cost and information assurance and security, the DoD asserts."
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"Card readers? We don't need no stinking card readers." -- Peter da Silva (at the National Academy of Sciencies, 1965, in a particularly vivid fantasy)

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