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Comment Re:Science (Score 1) 56

Yes, more transceivers are better than less, thank you MIT.

But only if they're really tightly synchronized.

MIT got them to be tightly synchronized despite being in different boxes in different rooms, rather than all being in the same box, WITHOUT a lot of extra, extra-special, extra-fancy, extra-cost, hardware. This can be built with a bit more off the shelf stuff (maybe the SAME amount of the same off the shelf stuff but with a bit better firmware) and easily folded into the next generation's chips.

Comment Re:Not handy for the home (Score 1) 56

Since they are talking about many devices connecting to multiple routers it's not going to do much for the average home user then. I may have a couple of devices but only the one router.

  - If you got a second router, put it some distance away from the first, and hooked them together with a network cable, you could use two devices about as fast as you could one with one router.
  - If you had three wired routers you could use three devices close to as fast as you could use one with one router.
And so on.

Note that I'm not talking about using the devices with each near a particular router. I'm talking about the routers spread out around the room or the house and the devices also somewhat spread out - but differently (even just at different spots in the same room) and with no particular relation between the device and the router locations.

Comment Re:We're not in a mimimum yet. [Re:Of course. . .] (Score 2) 213

There is some possibility that the sun may, at some time in the future, enter another sunspot minimum similar to the Maunder minimum of 1645 to about 1715. But we're not in one now.

Actually, there was a recent development in modelling the sun, which (if I recall correctly) resulted in a model of the sunspot cycle that has a high-90s percentage match to the historical data. (The key was to model it as TWO dynamos rather than one.)

Also (again, if I recall correctly) the new model predicted that we were going into something that looked like a new Maunder Minimum, with this cycle being weak and the next one nearly nonexistent.

(Sorry I can't dig up the reference right now. Only got a couple minutes left to post.)

Combine that with orbital forcing (which has been gradually, but progressively more steeply, pushing us toward another BIG ice age since about the time humans started using agriculture and settled down to dig up stuff, including coal), and the expected exhaustion of practically-extractable fossil carbon reserves in something like four more centuries, and warming might not be our long-range climate-change issue at all.

A Maunder minimum might only cover a half-century or so. But if it brought on another "little ice age", that (at about three centuries duration) might be about right to cover the period before global freezing is more of a concern than global warming.

Comment Re:Nah (Score 1) 171

On the other hand, an electric motor can easily produce its maximum torque at stall.

Then drop off like a cliff.

Not necessarily. You're thinking of older, more basic, motor designs, connected directly to a supply (such as a series-wound motor), not a modern electrical machines with winding currents controlled by switching regulators.

Torque is proportional to the product of the stator and rotor magnetic fields, which in turn for wound magnets) are proportional to current.

In a simple motor the current is limited by the fixed voltage applied across the winding resistance, which drops as the machine speeds up due to back-EMF generated by the motor's motion.

In a switching regulator controlled winding the resistance is very low (to reduce I-squared-R losses) and the current is controlled by the switching regulator. The current at stall is potentially astronomical as a result, limited by the regulator's dwell time, not the raw supply voltage. As the motor speeds up the current (and thus the torque) can be maintained at a desired (and high) value despite the rising back-EMF, up to an RPM and back-EMF where the switch would have to be on full-time (or full half-cycle time for AC-excited windings) to push the desired current through the winding resistance.

Comment Re: It was user error, not a spreadsheet problem . (Score 1) 313

The acronyms have the advantage that they are, relatively, semantics-free., If we turned them into long hand....

This is a false choice. Just because shorthand names are preferable doesn't mean they have to be acronyms, whose tortured derivations often distance the "shorthand name" from its derivation.

Disease researchers, for example, seemingly don't fall into the trap - H1N1 is nice and short, is descriptive of the virus, easy to remember AND is not an acronym.

Comment Re:So much for Apple's "better design" (Score 1) 193

I have a 6 Plus and have not had this problem nor heard about it until yesterday, when I saw the story elsewhere. However anecdotal evidence does not necessarily invalidate the claims being made.

What I'd be curious about, though, is the results of a survey attempting to correlate the various problems people have reported with the 6 or 6 Plus (or any large phone, for that matter) with how those same people carry their phones. I see a fair number of people keeping their cell phones in their pant's back pocket - something that seems ridiculously stupid. But then I wear cargo pants pretty much all the time, so I've always got a big stress-free pocket available for my phone.

Submission + - Malibu Media stay lifted, motion to quash denied

NewYorkCountryLawyer writes: In the federal court for the Eastern District of New York, where all Malibu Media cases have been stayed for the past year, the Court has lifted the stay and denied the motion to quash in the lead case, thus permitting all 84 cases to move forward. In his 28-page decision (PDF), Magistrate Judge Steven I. Locke accepted the representations of Malibu's expert, one Michael Patzer from a company called Excipio, that in detecting BitTorrent infringement he relies on "direct detection" rather than "indirect detection", and that it is "not possible" for there to be misidentification.

Comment Re:It was user error, not a spreadsheet problem .. (Score 1) 313

I think the real source of the problem is many scientists' insistence on naming everything using (what they think is) a clever acronym. it's become a virtual plague in most technical disciplines over the past two or three decades. I think it's directly related to the desire by scientists to somehow become famous beyond their little niches.

It's gotten so bad that, much of the time, the spelled-out names don't really even make sense.

Comment Re:Nah (Score 1) 171

Porsche 918 Spyder is 0-60 in 2.3s. Elon has a ways to go still.

On the other hand, an electric motor can easily produce its maximum torque at stall.

An electric car, with adequately sized motors, controllers, and batteries (or other power sources) should be able to drive the tires to the traction limit from a standing start to the speed where the available power will no longer sustain that level of acceleration - well over 60 MPH. This means the acceleration is limited solely by the coefficient of friction of the tire/road contact surface - a critical parameter that can be tightly tracked, during acceleration, by drive electronics akin to non-skid brake controllers.

So an electric car should be able to get the best possible standing-start rating out of any given tire technology - and be literally unbeatable in such a contest.

IMHO the only reason (pre-Tesla) electric cars had a reputation for being underpowered creampuffs rather than unbeatable sprint sports cars, is that the automobile manufacturers thought the purchasers would all be eco-freaks, more interested in mileage and ideology than performance, and designed lower-manufacturing-cost, underpowered, cars for this market.

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