Forgot your password?
typodupeerror

Comment: WiGig will be here faster (Score 1) 116

by isdnip (#47136669) Attached to: Huawei Successfully Tests New 802.11ax WiFi Standard At 10.53Gbps

Huawei is playing with the 5 GHz band which is becoming crowded, and whose availability has country-by-country exclusions. US rule were just liberalized a smidge but it still has exclusions for radar.

WIGig uses the 60 GHz band (57-64 GHz) which has a lot more space. It is not quite ready for the mass market, price-wise, but becoming possible in the $100 rage soon. It doesn't penetrate walls well but it's fine for cross-room very fast links.

Comment: Re:More bits then hertz? (Score 1) 116

by isdnip (#47136635) Attached to: Huawei Successfully Tests New 802.11ax WiFi Standard At 10.53Gbps

That's multiple bits per symbol, not symbols per period.
1024QAM, for instance, has 10 bits encoded in 1024 possible values of the phase and amplitude. It's one symbol though. High-speed communications uses a combination of techniques, including OFDM (parallel, lower-speed carriers) and MIMO (separate transmitters).

Comment: The LFTR is a different type of reactor (Score 1) 204

by isdnip (#46983707) Attached to: Thorium: The Wonder Fuel That Wasn't

The article seems to refer to conventional fission reactors that use thorium mixed in with uranium. I think Bill Gates has invested in a company that pushes that. McDowell's excellent video is about the Liquid Fluoride Thorium Reactor, a much safer design that takes a bit of Uranium 233 as its seed and breeds it out of thorium, never creating a high concentration and burning almost all of it before refueling. A conventional reactor leaves over 99% of the energy in the spent fuel; a LFTR leaves very little.

Comment: Rock, not dirt (Score 1) 513

by isdnip (#46323431) Attached to: Why Is US Broadband So Slow?

Have you ever tried burying wire in Westford, MA? There's a reason everybody uses poles in New England, the same reason most farmers gave up. The ground has a little soil mixed with lots of big hard rocks. A Ditch-Witch cable backhoe won't work. It costs hundreds of thousands of dollars per mile to bury wire here, so it's only done in core cities or to go under some intersections. And with Westford's low suburban/exurban density (gotta love those big expanses of Chem-Lawn and SUV garages, the Amerucan Way), the number of subscribers per mile is low.

Comment: Subsidies paid for it (Score 1) 513

by isdnip (#46321099) Attached to: Why Is US Broadband So Slow?

VTel does not provide $35/month gigabit service because they have easy access to poles. To be sure, they own the poles -- they're the incumbent phone company, and have old copper up there which they can overlash. But more importantly, VTel got millions of dollars in federal subsidies. The whole project cost over $5000/home, but VTel itself only paid a fraction, and the federal universal service fund -- that 16% tax on your phone bill -- pays them whatever it takes to make them profitable. Their retail price is a joke. Nice though for the recipients of the cheap service, and Mr. Guite, who owns it.

Comment: Re:Price? (Score 2) 112

by isdnip (#45208511) Attached to: Nokia Introduces Windows Tablet

True. Microsoft botched RT by getting greedy. Like iOS, it is locked down tight, so you can only install "apps" from their store. Sure, that gives MS a cut of the action, Xbox-style, but it's hostile to users and real Windows doesn't have that restriction. Plus it doesn't run real Windows applications. So its ecosystem is pretty narrow and not likely to become very good.

Comment: BlackBerry tried this already (Score 1) 53

by isdnip (#45087865) Attached to: Disney Engineers Develop Touch Screens That Mimic Tactile Sensations

They did a touch-screen phone that vibrated when you crossed between virtual keys, and required harder pressure to register than just touching. It sounded like a good idea, but it was a flop in practice. Touchie-feelie phones are bad enough. Touchie-feelie fluffy pix? Eeewww.

Comment: Re:Hope it makes him feel better (Score 2) 362

by isdnip (#45047193) Attached to: 'Dangerously Naive' Aaron Swartz 'Destroyed Himself'

He walked into an unlocked closet, hooked up his laptop to a campus Ethernet connection, and ran a script to access a web site. The only "crime" was using a script rather than surfing, slower, by hand. He wasn't tapping others' communications. There was just a copyright question over how many documents one should access.

Comment: Re:Generation Y's unusual sense of "responsibility (Score 5, Insightful) 362

by isdnip (#45047171) Attached to: 'Dangerously Naive' Aaron Swartz 'Destroyed Himself'

The prosecutor aims for a high degree of punishment because they hope for a plea bargain, with every intention of keeping the maximum sentence recommendation intact in the event that the case actually goes to trial. It is a way to undercut the constitutional guarantee of trial by jury by raising the stakes so high that a jury trial becomes an untenable gamble.

Thus the Ortiz-Heymann tactics in this case should be seen as what they were, an untenable subversion of basic constitutional rights, by persecutors with a goal of putting notches in their belt, hoping to gain political points with an ignorant public afraid of any and all "crime".

Comment: Re:A Loss For Several Reasons (Score 1) 120

by isdnip (#44920555) Attached to: BlackBerry Confirms 4,500 Job Cuts, Warns of $950 Million Loss

Price might have killed the BB10 line too. The Z10 was priced near an iPhone and the Q10 was priced even higher. That's a ridiculous way to break into new markets when you're behind, and when the teardown cost of parts makes it clear that there's plenty of margin to work with. Some imbecile at BBY was greedy and shot the moon, when they should have taken their medicine and priced it competitively. BB10 devices get great user reviews.

Comment: Re:How'd the government know what they were Googli (Score 1) 923

by isdnip (#44451227) Attached to: Google Pressure Cookers and Backpacks: Get a Visit From the Feds

Probably not BS. This sounds real. But the Slashdot blurbist got it wrong. The picture, which was a file photo, had been taken in Massachusetts. The family whose home was searched because they googled the wrong domestic products was in New York (Nassau County).

Comment: Re:Finally! (Score 1) 327

by isdnip (#44377013) Attached to: Bill Gates Is Beginning To Dream the Thorium Dream

LordA, that's just insane. DFHs didn't cause GE, Westinghouse, and other giant corporations to use old reactor designs and not new ones. Yes, TMI stopped the construction of new ones in the US, but they were only going to keep building the trashy old ones. That's where the money is.

Each uranium reactor needs custom fuel rods, built by the reactor manufacturer. So that's what they peddle, like HP printers and their ink, where they make their money on refueling, not just (if at all) up front. Thorium MSBRs don't work that way. No long-term revenue. Imagine where Gillette would be if their razor blades stayed sharp forever. Wear and tear is the heart of the business model.

Comment: Uranium would be in short supply (Score 3, Informative) 327

by isdnip (#44376919) Attached to: Bill Gates Is Beginning To Dream the Thorium Dream

The market now may not be tight, but the world's total supply of U-235 is very small. Plus it takes vast amounts of energy to refine it out of the ore, since over 99% of the uranium is U-238. And if I understand the process correctly, it's refined by making it into UF6, which is spun in a chain of centrifuges. Now how do you make UF6? With FOOF! Look that one up... fluorine dioxide. Nasty.

If we really tried to power the world's electric supply with U-235, we'd soon run low. (Or die from meltdowns.) But there's a virtually infinite supply of thorium. It's not just cheap; it's practically free, since it's a waste product of rare earth mining, and we need to refine tons of neodymium in order to have good magnets for motors and generators. Yes, the MSBR needs a seed of U-233, but enough of those reactors do exist.

Comment: Re:Finally! (Score 4, Informative) 327

by isdnip (#44376861) Attached to: Bill Gates Is Beginning To Dream the Thorium Dream

Thorium doesn't use fuel rods, so it doesn't need the zirconium, etc. The thorium is simply dissolved in the molten sodium fluoride.
The main reason it was abandoned in the US is that it was single-use, civilian power only, not dual-use military-civilian. You can't power a submarine with a thorium reactor and you can't build bombs from its waste products. It produces very little waste, a small fraction of what uranium-cycle reactors produce.

Blessed be those who initiate lively discussions with the hopelessly mute, for they shall be known as Dentists.

Working...