Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
×

Comment Re:why google keeps microsoft away (Score 0) 280

The lag isn't just 30hz touch/refresh and triple-buffering. I've got a Samsung S3 and it feels like most actions take from around a second and up to complete

iOS is exactly the same way these days. Touch the screen. Nothing happens. Touch it again. Nothing happens. Touch it again, harder this time, and a bunch of stuff you didn't expect happens because the phone thinks you submitted three touches in a row.

Comment Re:Why lay fiber at all when you can gouge wireles (Score 1) 201

We used to have a great small local magazine shop in this town. Borders moved in. They had books and magazines and a coffee shop and ... all in one place. The local shop was driven out of business. Bad for them. Then Borders lost the competition with B&N (and Amazon) and they have now gone away. It's an hour drive to the closest full-service shop. This competition turned out just great for the local shop, Borders, and the customers in this town, didn't it?

(Shrug) The same thing would have happened to the local shop, with or without Borders. I wouldn't trade Amazon for all of the Mom & Pop outfits, Borders, and B&N combined. The marked worked exactly how it is supposed to work, and the best competitor won.

Comment Re: What's wrong with Europe nowdays? (Score 1) 174

The reasons hardly matter when you consider that the US is the only reason that western European countries didn't spend fifty years as shithole Russian client states like your brothers and sisters in the Eastern Bloc had to. Never mind Japan, which would have become North Korea with weirder cartoons.

Somehow I'm guessing that if time travel is ever invented, you're not going to go go back to 1942 and tell us to get lost.

Comment Re:No matter how much power we gave them ... (Score 2) 319

A leadership who actively pushed a pseudo-norse mythology based on ubermenchen and "racial purity" is not Christianity.

Yeah, that must be why Wehrmacht soldiers' belt buckles were emblazoned with the motto "God is With Us." It was Odin's fault all along, I guess.

Nice try and all, but your argument fails. It fails twice over in the face of the fact that activity from the Vatican itself managed to directly rescue an estimated 800,000+ Jews and similarly-targeted folks throughout WWII (and indirectly rescued far more) - in spite of it being unarmed and surrounded.

As usual with the Catholic Church, most of their acts of charity and compassion are directed towards fixing social problems they actively participated in causing.

Comment Re:Uh No (Score 4, Interesting) 109

Your question doesn't have a simple answer, but if it did, it would involve signal-to-noise ratio within a given bandwidth. A radio receiver with a bandwidth in the audio range (~10 kHz) can amplify a signal by about ten trillion times its original power or a few million times its original voltage, before hitting the thermal noise floor of -174 dBm/Hz. These figures aren't exact (for one thing, they neglect the impedance change from a 50-ohm antenna input to an 8-ohm speaker) but the basic idea is correct: the noise floor at 25C in a 50-ohm system is -174 dBm/Hz + 10*log(bandwidth) dBm.

You can improve SNR by making your measurement near absolute zero, but you can't get rid of the noise entirely because some of it isn't strictly thermal in nature. Synchronous demodulation can let you recover information from below the noise floor, given a carrier of known phase. There are other tricks and hacks, but the bottom line is that you are still going to be at least ten or fifteen orders of magnitude away from being able to work with 37 significant figures in any real-world physical measurement. Integration times for such a measurement would have to approach heat-death-of-the-Universe durations.

Slashdot Top Deals

Arithmetic is being able to count up to twenty without taking off your shoes. -- Mickey Mouse

Working...