You can try tuning middle A to 480Hz, which is a harmonic of 60Hz... but in practice this does not lower the noise floor when multitracking, and sounds like poop.

The Cap'n needed 2600Hz, which was useful once upon a time.

(Continuing after brushing the touchpad posted it for me. B-b) ... equipment at that voltage. (Small systems are often 12V due to the availability of 12V appliances.)

But back to inverters:

Current inverter and switching regulator (they're pretty much the same stuff) technology is SO efficient that large PC boards in computing and networking equipment may run the power through as many as THREE DC-DC converters, because you lose less power to heat as losses in the inverters than you would to resistance running it a few inches through a printed circuit board power plane.

So the '"20-40% loss" number seems to me to be utterly bogus.

(Consider this: A Tesla automobile IS AC motors driven by inverters from batteries. A horsepower is almost exactly 750 watts. If they had 20-40% losses in the inverters, how do you keep the car from being on fire after a jackrabbit start? Let alone recover enough power on braking to reuse on acceleration to make a substantial difference?) If ANYBODY knows how to handle inverters it's Tesla. B-) )

This is strange. "20 to 40% power loss" seems to be an awfully poor inverter; existing inverters are 4-8 % loss.

Rather than rewire every house in America, wouldn't it make more sense to just design better inverters?

Or just run at 120V DC, as renewable energy systems did (and occasionally still do) before so many appliances were AC-only that it made sense to use an inverter.

Dropping voltage means you have to replace the copper wiring with MUCH HEAVIER wiring - by a square law - to carry a given amount of power with the same loss - and thus wiring heating inside the walls, where it can set the house of fire.

Switching to 120V just means using DC-capable appliances and replacing the breakers (DC is harder to interrupt) and must-be-GFCI outlets (normal GFCI devices use a transformer to sense unbalanced load).

The 48V standard was about having a voltage that was low enough that touching it was typically survivable, so working on or near it is (relatively) safe. The boundary between the hard part and the easy, "low-voltage", part of the electrical code is 50V (BECAUSE of phone companies B-) ). Medium power (>1KW) home Renewable Energy systems tend to be at 48V so much of the wiring falls under the easier part of the code, and because of the availability of

You're at a very straight, very long beach. Imagine parallel waves striking the shore at a vanishingly slight angle. The point that the wave meets the shore moves along as the intersection of wave and beach occurs. As the waves get closer and closer to parallel with the beach, but not quite parallel, eventually that intersection point will be moving much faster than c.

But the interesection point between waves and shore doesn't have mass, isn't really a "thing" that's moving.

Relativity requres that nothing can move through space as fast as light (c). Nothing with mass moving slower than c can reach c by moving faster, due to increase in mass and infinite energy required to reach c, and nothing moving faster than light can slow down to c, for the same reasons. The quote from teh article is at best misleading and at worst, false.

Nothing can go as fast as light. Slower or faster, sure, but not c.

Hardy has another movie currently showing

Tom is a lot older than he looks.

If this works, the monied and in-power will make this as illegal as LSD and heroin.

Not necessarily.

If the anti-aging drug(s) make people healthier, reducing the drain on the government pensions and enabling the government to push the retirement age out over the horizon, so the people will be working and taxed, they might prefer to have the drugs put into use.

Heck, they'd probably add them to the water.

Maybe you're right. Hey, did you see this?. For all we know, the reasonable budgets of a national space program with a Moon mission are a bargain for the new technology this mission might discover, and someday provide to prevent mass population die-offs due to poverty. But I really doubt it and I can't agree. India's space program is a bad idea considering they have such severe national problems. If the US in the 1960's was half as bad as India is today, the Moon missions would probably not have happened, even if Russia's program was putting pressure on US dominating races to every possible technical achievement. First feed your kids, istartedi... THEN you can go to the Moon.

You are clinging to your misconception about what CS is by arguing something entirely new: there are no CS "jobs." You are mistaken, btw. And what we are talking about is not a negligible chunk of change, as outside academia the starting salary of a B.S. computer scientist with zero experience is close to $70-80K these days, while I think you know any software developer graduating with any degree with zero experience won't touch that. Your ignorance of any positions for an actual, bone fide "computer scientist" is not a good foundation to argue from, IMO.

My point really simply was (sorry for the feigned ignorance) that maybe the Clinton Foundation, certainly Slashdot editors, and obviously you, mistakenly believe that the purpose of "Computer Science" in society in practice, is to fill the jobs for software developers. This is absurd on its face, and your academia-vs-real-world strawman does not change this.

Please refrain from limiting computer scientists to the labor of developers. All developers can do is code. Computer scientists have a much larger bag.

I truly believe they have misnamed the subject in question, and couldn't possibly be talking about CS, but perhaps skills, incidentally related, often attributed to CS incorrectly. IT WOULD BE AWESOME if some CS got into lower education. It shouldn't be expensive... no PCs necessary. But symbolic logic corses would be just as useful. Again, I don't think this is their (Clinton Foundation's) intention, but (perhaps slashdot editors) are misusing CS to mean either programming or confident graphic interface operation and document creation, or both. It is maddening the damage Slashdot has done to Computer Science, relegating it to "the stuff you can do with computers," instead of what it is, the science of computating.

Why would a CS grad want to be a software developer? That doesn't make any sense. They should have studied software development and programming. That's like an MD hoping to get a job as a medical tech... a noble profession, but the MD can earn much more, be more fulfilled properly applying their education as a doctor, and the same is true of a CS grad. Their ideal employment will have little to do with coding.

Headline is wrong... should not be "Lack of CS Savvy" but "Lack of COMPUTER Savvy." Once again, Computer Science has been misunderstood and its title abused by those that cannot understand... computer science IS a science... and it has hardly anything to do with computers... the "computer" in computer science is NOT A DIGITAL MACHINE, per se, but one who computes... it is the science of reckoning, not the science of (or application of) advanced programming techniques.

I'm surprised, too, but not by that. Well, thinking positively, I hope India can get off the ground and get to the Moon and can there find safe drinking water, sanitation, housing, health infrastructure as well as something to reduce the malnutrition for the hundreds of millions in their country that find they are still in very short supply.

Losing data goes with the territory if you're going to use RAID 0.

In particular, RAID 0 combines disks with no redundancy. It's JUST about capacity and speed, striping the data across several drives on several controllers, so it comes at you faster when you read it and gets shoved out faster when you write it. RAID 0 doesn't even have a parity disk to allow you to recover from failure of one drive or loss of one sector.

That means the failure rate is WORSE than that of an individual disk. If any of the combined disks fails, the total array fails.

(Of course it's still worse if a software bug injects additional failures. B-b But don't assume, because "there's a RAID 0 corruption bug", that there is ANY problem with the similarly-named, but utterly distinct, higher-level RAID configurations which are directed toward reliability, rather than ONLY raw speed and capacity.)