Comment Re:There is some Background ... (Score 1) 394
Good summary - although there are a couple more SPD-ruled cities in Bavaria - I wish I'd have some mod points.
Good summary - although there are a couple more SPD-ruled cities in Bavaria - I wish I'd have some mod points.
You are correct. The line you quoted translates to "no applications can be installed by users themselves"
Effective? Hardly!
what happened to Slashdot?
It's rising. According to the latest news.
In the German city of Staufen, they drilled some 140m deep holes to get geothermal energy for heating the town hall and adjacent buildings.
Unfortunately, this drilling caused many cracks in houses around the city centre. Some of these cracks are said to be big enough that you can put your fingers in.
According to this article on the English Spiegel (a German news magazine) website, dated March 2008, the whole city is sinking. In a recent German article from November, they write that the city has risen several centimeters due to water mixing with gypsum deep down and therefore causing the gypsum to expand.
a real Ubuntu admin uses sudo bash
My point is that you don't get free energy... you could eliminate those extra batteries, but to get the same life, you'd need to replace them with a single larger battery. That single larger battery probably wouldn't fit in the cover as well as the lots of little ones.
An example: The CR2016 batteries used are 90mAH, 1.6 mm thick, and 20 mm diameter. Replacing this with a DC/DC converter (at a very generous 80% efficiency - at currents this low, the power taken by the generator is significant - the real efficiency would probably be in the 40-50% range) would be a single 675 mAH battery. That's a CR2450 battery -- 5 mm thick (3x thicker) and 24mm in diameter.
Pricewise, CR2016's are $0.18 each, qty 5000 (Esquire ordered 1.4 million batteries). I didn't find bulk 2450's, so I compared the same manufacturer from the same vendor - the price was 2.66x the cost of the 2016 -- so, I'd guess $0.48. The savings is 6*0.18 - 0.48 = $0.60. At 40% efficiency (two 2450's), the savings is $0.12 -- minus, of course, the cost of the converter, which is non-trivial. You need the driver chip (usually not cheap) and a pair of capacitors (high quality, or else you'll get EMI).
"Neighbors!! We got neighbors! We ain't supposed to have any neighbors, and I just had to shoot one." -- Post Bros. Comics