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Comment Re:Is there a site maintaining a list of "bad" SSD (Score 5, Informative) 182 182

It takes a couple of links and searching through source code to get there. So here's the list of problematic drives, better formatted but still in regular expression format:

/* devices that don't properly handle queued TRIM commands */
Samsung SSD 8*

So, basically, all the ones I thought were the best. The list of whitelisted drives after it only includes those brands, Intel, and ST-something. So other brand may be unknowns.

Comment Can't be fuel-free forever (Score 3, Interesting) 265 265

Instead, they think the graphene absorbs laser energy and builds up a charge of electrons. Eventually it can't hold any more, and extra electrons are released, pushing the sponge in the opposite direction. Although it's not clear why the electrons don't fly off randomly, the team was able to confirm a current flowing away from the graphene as it was exposed to a laser, suggesting this hypothesis is correct (

He thinks a graphene-powered spacecraft is an interesting idea, but losing electrons would mean the craft builds up a positive charge that would need to be neutralised, or it could cause damage.

So they'd need to carry hydrogen and split off its electrons or something to neutralize the charge.

Comment Non-profit revenue streams (Score 2) 531 531

Firefox gets its revenue from ads. Whether directly or indirectly, through first Google, then Yahoo, and now directly. They never seem to have enough revenue.

Wikipedia gets its revenue from donations. They occasionally have a beg bar at the top. They refuse to accept advertising. They always seem to have too much revenue.

I, for one, would much prefer to have an occasional beg bar in my Firefox and no ads, rather than ads and no beg bar.

Comment This effect of climate change was predicted in '05 (Score 4, Informative) 173 173

“Where the sea ice is reduced, heat transfer from the ocean warms the atmosphere, resulting in a rising column of relatively warm air,” Sewall said. “The shift in storm tracks over North America was linked to the formation of these columns of warmer air over areas of reduced sea ice.”

Comment Re:The main challenges... (Score 4, Interesting) 142 142

Just because it's not a good battery for your laptop - yet - doesn't mean it's not a good battery for other applications.

Compare it to lead-acid, for instance. It's lighter, it's probably non-toxic (the electrolyte is unknown), and I'd be surprised if it were much more expensive. And it charges fast, so it probably discharges fast too. Sounds like a great starter battery for cars or scooters, etc.

Murphy's Law, that brash proletarian restatement of Godel's Theorem. -- Thomas Pynchon, "Gravity's Rainbow"