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Comment I doubt it is for *chips* themselves (Score 3, Interesting) 90 90

TFA is a bit light on details, but (having heard of GaN before), it is good at handling large voltages/currents, and they are probably talking about more efficient power supplies (saving 20%, apparently), not replacing Si in logic chips. Or maybe integrating power conversion onto processor die itself, but the latter is still made of good old CMOS. Currently, from what I've heard, a good chunk of pins on your processor are used to supply power -- if you think of it, 30W processor with 3V bias needs to get 10A of current.

Paul B.

Comment Re:Except if you pay with silver quarters... (Score 1) 940 940

Agreed, I think that we are saying the same thing -- measured in time or in silver prices stay the same (after all, someone has to spend time to mine that silver).

The real question is, where did productivity gains go? Probably "regressively redistributed" to top 1% and away from you and me... Too bad!

Paul B.

Comment Whatever means necessary? (Score 4, Informative) 818 818

Ever heard of Corvin Amendment (approved by Lincoln!) which would preserve slavery in states where it was legal? https://en.wikipedia.org/wiki/...

Basically it was offer to the South to keeep their slaves, if only they would not leave the Union!

They still fought the war to leave, so it was not "all about slavery", more about tariffs.

Paul B.

Comment Except if you pay with silver quarters... (Score 4, Interesting) 940 940

If you pay for anything you mention in pre-1965 90% silver coins, it would end up staying the same.
0.715 ozt of silver per $1 back then is $11.37 today ($15.90/ozt spot price).

Here is your 11x dollar devaluation since it got off silver standard.

Paul B.

Comment Re:Explanation seems to violate charge conservatio (Score 4, Informative) 265 265

Well, CRT face is (weakly) grounded, so e- kinetic energy can excite atom for subsequent photon emission, but its charge will happily leak into the ground.

There is no "ground" anywhere next to flying spacecraft!

Actually, on reading the preprint, yes, electrons come from under the Fermi level, get lost in the process and graphene foam (or, spacecraft carrying it) *will* become charged -- it was pointed out in the article as well, but I did miss it on quick read.

AC below actually paints a rather dramatic picture of what can happen next! :)

Paul B.

Comment Re:Don't single out EPA (Score 2) 355 355

Medical studies in particular: you really don't want the public to have access to the private medical data which is used in medical studies.

I can not see how this is a valid argument -- of course such data should be anonymized and not traceable to an *individual* patient (this is where privacy kicks in), but it is done in publicly published medical research anyway ("Patient A [not Sam Smith!] was responding to treatment... ").

As to temperature data -- if there is suspicion that it is tainted by "local political concerns" -- should we even consider it to be valid *scientific* data?

Paul B.

Comment Wavelength matters too? (Score 1) 327 327

My first though without even reading the summary:

Of course pointing it to the South would "catch" more integrated spectrum, but not all of that can be converted to electricity efficiently (they are more efficient for longer wavelength), so it should not *hurt* much to till them westwards (or eastwards), where/when blue light ("useless for") is filtered by the atmosphere...

By the way, blue light is still absorbed/heats/damages the cells, but not gets converted to voltage. Or some such... ;-)

Aligning with peak demand might make more sense though.

Paul B.

"What I've done, of course, is total garbage." -- R. Willard, Pure Math 430a

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