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Comment: Tesla battery also far larger than needed (Score 1) 329

by grimJester (#49567037) Attached to: Why Our Antiquated Power Grid Needs Battery Storage

The Tesla Battery's cost $13,000 would pay most people's electric bills outright over it's life.

The Tesla's battery is also 53, 70 or 85 kWh whereas the average household uses around 1 kW (kWh/h) and certainly can get by with a few kWh of storage to handle its overproduction of solar during a day.

In the end, it's just economics. Does solar + battery pay itself back in lowered electricity bills? If it does, nothing else matters.

Comment: Price difference may not matter to everyone (Score 2) 149

by grimJester (#49039459) Attached to: Mooted: An Undersea Link From Finland To Estonia
The difference between 25 and 40 € isn't that big. Depending on where exactly you are and want to go in Helsinki/Tallinn, it may well be more convenient to take a train.

Heck, people ride the metro for nearly half an hour to get downtown for beers. If I can get to a decent Tallinn pub in less than an hour door-to-door I'd probably go now and then, depending on how late in the evening I can get back home.

For those who don't know, alcohol and restaurant food are around half the price in Tallinn compared to Helsinki.

Comment: Re:Copenhagen interpretation != less complicated (Score 2) 197

by grimJester (#48635063) Attached to: Quantum Physics Just Got Less Complicated
Well, I remember Scott Aaronson saying de Broglieâ"Bohm's pilot wave theory requires exponential resources to simulate even with a quantum computer. Ergo even if it makes some things easier to understand it's not generally the most useful way to think about QM and arguably in some sense can't be the way Nature does what it does.

Comment: The LEP only went to 104,5 GeV (Score 1) 90

by grimJester (#48555399) Attached to: Berkeley Lab Builds World Record Tabletop-Size Particle Accelerator
Electron-positron collisions are much cleaner than proton-proton ones. The LEP did exclude the Higgs up to 115 GeV while it actually was around 125, so scaling this up by a factor of 40 or so would make a small Higgs factory. Dunno about luminosity but maybe that's not a problem.

Comment: So worst case still classically exponential, but.. (Score 1) 62

If I understand correctly, the classical version of this factoring scales with 2^n where n is the number of bits different in the two binary factors. Wouldn't there be some kind of trick to handle situations where more than half the bits are different though? IIRC this still wouldn't be the best known classical algorithm, but this seems worth some thought.

Also nice to see the whys and wherefores of quantum algorithms being better understood, but can't really say I know enough so see if this gives any more general insights.

The perversity of nature is nowhere better demonstrated by the fact that, when exposed to the same atmosphere, bread becomes hard while crackers become soft.