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Comment: Damn (Score 2) 63

by pushing-robot (#48627055) Attached to: After 40 Years As a Double Amputee, Man Gains Two Bionic Arms

Nothing like a reminder that you live in the future.

I know we've been talking about biomechatronics for decades, but Moore's Law and developments in nanomaterials are making things possible that were the stuff of science fiction just a few years ago. Simply put, we're starting to build amazingly large numbers of amazingly complex structures at amazingly small scales out of amazing materials, amazingly cheap.

Mind you, that's not new either; biology has been doing that for eons. Yet being able to manufacture it, to mass-produce biological or biocompatible materials like BCIs and prosthetic organs, is a remarkable and wholly new development. I fully expect the next half century will see a medical revolution that rivals the computer revolution of the last.

Comment: Blah blah DRM blah blah (Score 4, Insightful) 146

by pushing-robot (#48625405) Attached to: To Fight Currency Mismatches, Steam Adding Region Locking to PC Games

You can still buy a game in one location and play it in another, you just can't gift it to someone else's account in another region.

I'm okay with that; despite what some people here will argue (free market blah blah) I'd sooner see purchase restrictions like this than expect people in poor countries to pay a week's wages for a game or movie or album.

As long as they don't start making content only available in certain regions, they're making the best of a bad situation.

Comment: Re:for all this talk... where is it? (Score 5, Insightful) 129

by pushing-robot (#48489273) Attached to: Graphene May Top Kevlar As a Bullet-Stopping Material

Yes, but airplanes were no more than experiments until more than a decade after the first powered flight, when WWI spurred refinement and mass production. Graphene has also been displayed and demonstrated, but not mass produced.

2D structures like Graphene are a new class of materials, and that takes time. Plastics were discovered decades before any practical product was made. Petroleum was known for millenia before we had a clue what it was capable of. Metals too. Spend some time on Wikipedia and learn how long it took to bring any material or technology to widespread use.

Yes, I know: We live in the Internet age now, and you can become a YouTube celebrity overnight, so come on already. Alas, you can't expect science to keep pace with 21st century ADHD.

Comment: Re:sane units - FYI (Score 5, Informative) 129

by pushing-robot (#48489147) Attached to: Graphene May Top Kevlar As a Bullet-Stopping Material

A Joule is equal to one newton-meter (or metre if you're so inclined). Force times distance.

Foot-pounds are the same: Force times distance (well, distance times force). The confusion comes from pound in this case referring to "pound-force" or lbf, a unit equal to one pound times g.

J/kg is a different measure, the specific kinetic energy of an object; the amount of energy per unit mass. The imperial equivalent would be ft*lbf / lb (foot * pound-force / pound)

Metric: J/kg = N*m/kg = (kg * m/s^2 * m)/kg = m/s^2 * m = m^2/s^2

Imperial: lbf*ft/lb = lb*g*ft/lb = g*ft = ~32.174 * ft/s^2 * ft = ~32.174*ft^2/s^2

As you can see, the choice of g rather than 1 ft/s^2 was unfortunate, but otherwise the systems are equivalent.

Comment: Re:for all this talk... where is it? (Score 5, Funny) 129

by pushing-robot (#48488953) Attached to: Graphene May Top Kevlar As a Bullet-Stopping Material

And this stuff and nonsense about aeroplanes! For ten years now they've claimed breakthrough after breakthrough vis-a-vis powered flight and yet here we are in the fine year 1914 and they still have nothing to show us but more of their ramshackle prototypes! Where are the great flying ships they keep promising to take us round the world in a week's time? The bloody Hun had the good sense to invest in dirigibles; there's a technology that's going places—aha!

Comment: Re:Simple (Score 2) 720

by pushing-robot (#48487765) Attached to: Ask Slashdot: Making a 'Wife Friendly' Gaming PC?

The reason I picked it is because the Seasonics have a "hybrid fan mode" that switches off the fan entirely when below 30-50% of their rated output. Even at full load that system won't pull more than ~350W, so the fan should never turn on :)

Also, the link I gave was for a killer black friday deal; despite its high rating it's the cheapest platinum-rated PSU you'll find right now.

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