In other news today...
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@boomzilla I was sure you had posted this before, but turns out it was another @boomzilla.
@El_Heffe said in The Official Funny Stuff Thread™:
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@Boner they fucking kept it LOADED?!?
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@Tsaukpaetra said in In other news today...:
@Boner they fucking kept it LOADED?!?
TFA says:
The South African Police Service is treating the incident as culpable homicide and is working to find out why the shotgun was entered as evidence while still fully loaded.
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@Boner I'm a bit curious about what kind of shotgun it was as well. There is a bit of extra dumb in there if it's a slam fire.
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@Dragoon said in In other news today...:
The article really hypes it up
That's not an article, it's an advertisement of the basic "idiot venture capitalist bait" variety: "These guys do what everyone's been doing for thousands of years but they added
: AI
so better! Also it's a secret!!!1! (invest now immediately to be ahead of everyone else!!!) and also Bill Gates is backing it so it must be totally great and awesome!!
It also has advertising's hallmark trait of not providing any useful information on the subject matter whatsoever; among the primary questions requiring an answer here being: How could AI possibly be of any help in this? What do you even mean by "AI"? What problems does it solve? How much better is it than other options?
Maybe that startup has indeed achieved some kind of break-through in some way or another, but the "article" sure doesn't tell us any such thing, only buzz-words and platitudes.
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@PleegWat said in In other news today...:
It's murder in the courtroom
But they'd better not kill the groove.
@Polygeekery gonna burn this goddamn house right down.
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@ixvedeusi said in In other news today...:
and also Bill Gates is backing it so it must be totally great and awesome!!
I wouldn't trust that guy. I forwarded all his emails and he still hasn't paid me a single penny!
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@TimeBandit 2.2 million users of currency? Am I among them? I use currency all the time!
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@hungrier said in In other news today...:
he still hasn't paid me a single penny!
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*insert footage of Babylon Bee writer crumpling up his draft for "James Bond supercar manufacturer shifts focus to soccer mom SUVs after adding women to board of directors"*
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I know this is olds, not news, but it's still worth linking:
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For example, when asked to identify the total revenue that it has derived from repair services since 2009, Apple said "the costs of providing repair services has exceeded the revenue generated by repairs" in each year over that period.
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@TimeBandit quoted in In other news today...:
the costs of providing repair services has exceeded the revenue generated by repairs
Non-responsive. What is the revenue? Also, grammatically incorrect: subject and verb do not agree in number (costs, plural; has, singular — and you can't even excuse it because of the prepositional phrase; that noun is plural, too). Finally, even if the statement is true, it's probably a result of accounting shenanigans.
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@HardwareGeek I think the Ars article makes it clearer where the improvements come from:
Heliogen's announcement is that its system has now cleared 1,000°C, and the company expects its system can go even higher. Heliogen claims to do so via finer mirror control. While details of Heliogen's system are sparse, it appears to use cameras to register the pointing of the mirrors and constantly adjust their location to keep the sunlight highly focused. This would be able to produce higher temperatures if either of the following is true: the system can focus more sunlight, or it can focus the same amount of sunlight on a smaller area than competing systems.
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@HardwareGeek said in In other news today...:
@TimeBandit quoted in In other news today...:
the costs of providing repair services has exceeded the revenue generated by repairs
Also, grammatically incorrect: subject and verb do not agree in number (costs, plural; has, singular — and you can't even excuse it because of the prepositional phrase; that noun is plural, too).
Well, you know what they say about malice and incompetence.
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@Dragoon said in In other news today...:
@HardwareGeek said in In other news today...:
@TimeBandit quoted in In other news today...:
the costs of providing repair services has exceeded the revenue generated by repairs
Also, grammatically incorrect: subject and verb do not agree in number (costs, plural; has, singular — and you can't even excuse it because of the prepositional phrase; that noun is plural, too).
Well, you know what they say about malice and incompetence.
"Why not both?"
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@Rhywden said in In other news today...:
the Ars article
... isn't just pulling investor-bait BS out of their arse?
@Rhywden quoted in In other news today...:
if either of the following is true:
Yes, if. However, I'm not willing to accept the predicate as true without additional information.
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@HardwareGeek said in In other news today...:
@TimeBandit quoted in In other news today...:
the costs of providing repair services has exceeded the revenue generated by repairs
Non-responsive. What is the revenue? Also, grammatically incorrect: subject and verb do not agree in number (costs, plural; has, singular — and you can't even excuse it because of the prepositional phrase; that noun is plural, too). Finally, even if the statement is true, it's probably a result of accounting shenanigans.
Certainly some degree of misinformation involved.
I mean, if you have a gigantic profit margin on exchanging batteries, but also have to exchange the keyboard of every laptop you sold for free at least 3 times, surely does are the same category and should be totaled together.
(In other words, I'm sure they put in warranty repairs, too)
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@PleegWat said in In other news today...:
@Applied-Mediocrity Isn't the theoretical maximum the actual temperature of the light-emitting surface of the sun?
I've read something like that before, I think in an xkcd what-if, but I didn't really understand it.
You have a certain power-per-area input P1 over surface A1 and focus that on a different area A2. Shouldn't the products be constant, i.e. P1 A1 = P2 A2?
What's the process that limits taking a gigantic area and reflecting all of the incoming light onto a tiny surface to the original surface's temperature?
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@topspin said in In other news today...:
What's the process that limits taking a gigantic area and reflecting all of the incoming light onto a tiny surface to the original surface's temperature?
Usually you end up limited by your ability to focus. Failing that, the cost of the receiver materials gets tricky; there aren't that many materials that maintain good structural strength when held at over 1000°C for hours on end. (Nickel superalloys might do the trick, or something else similarly exotic...)
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@TimeBandit said in In other news today...:
sold on the dark web for under £10
Guess that puts a value on a Disney customer...
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https://phys.org/news/2019-11-photos-evidence-life-mars-ohio.html
Here is an exclusive picture of the author:
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@topspin said in In other news today...:
@PleegWat said in In other news today...:
@Applied-Mediocrity Isn't the theoretical maximum the actual temperature of the light-emitting surface of the sun?
I've read something like that before, I think in an xkcd what-if, but I didn't really understand it.
You have a certain power-per-area input P1 over surface A1 and focus that on a different area A2. Shouldn't the products be constant, i.e. P1 A1 = P2 A2?
What's the process that limits taking a gigantic area and reflecting all of the incoming light onto a tiny surface to the original surface's temperature?I'm pretty sure it was in a what-if, and that it was about refractive lenses. I'm assuming whatever holds for refractive lenses holds for mirrors too though.
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@dkf said in In other news today...:
@topspin said in In other news today...:
What's the process that limits taking a gigantic area and reflecting all of the incoming light onto a tiny surface to the original surface's temperature?
Usually you end up limited by your ability to focus. Failing that, the cost of the receiver materials gets tricky; there aren't that many materials that maintain good structural strength when held at over 1000°C for hours on end. (Nickel superalloys might do the trick, or something else similarly exotic...)
Yeah, but then that’s more of a practical limitation, not a theoretically absolute limit due to thermodynamics.
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@dkf said in In other news today...:
Usually you end up limited by your ability to focus.
ADHD is a bitch.
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@Zecc said in In other news today...:
@dkf said in In other news today...:
Usually you end up limited by your ability to focus.
ADHD is a bitch.
One somewhat difficult to pet, indeed. Must maintain continuous motion at all times during the session.
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@topspin said in In other news today...:
What's the process that limits taking a gigantic area and reflecting all of the incoming light onto a tiny surface to the original surface's temperature?
Heat can't spontaneously move to an area of higher temperature; work must be done. Focus the large, cool area into a small, hot area, then run the heat back to the cool through a heat engine and there's perpetual energy.
I'd guess the limiting factor is that whatever the radiation is focused onto will radiate its own heat significantly more as it gets hotter. By the time it approaches the source temperature, it's radiating heat about as fast as it is being received.
edit: importantly, thanks to the focusing apparatus: a lot of that will go straight back to the original heat source.
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@kazitor said in In other news today...:
whatever the radiation is focused onto will radiate its own heat significantly more as it gets hotter.
It's been decades since I took a heat transfer class in uni, but one of the few things I remember from it is that radiative heat transfer is proportional to ΔT^4, where ΔT is the difference between the absolute (K) temperatures of the radiating and absorbing bodies. I don't remember the proportionality factors (and
to look them up), but we don't really need them for the present purpose.
By the time it approaches the source temperature, it's radiating heat about as fast as it is being received.
Much faster, actually.
The temperature of the sun's surface is about 5000K, close enough. The starting temperature of the target is ambient, 20°C (293K), close enough. The temperature difference is 4707K, and the 4th power of that is 4.9E14. When the target is heated to 1000°C (1273K), the temperature difference is only 3727K, the 4th power of which is 1.9E14; the heat transfer rate is only 39% if the initial rate. At 1500°C (1773K), it's only 22%. If you could heat the target to 5000K, it would no longer absorb any heat from the sun. Meanwhile, the rate at which it is radiating heat to the ambient has increased from zero (when it was itself at ambient temperature) to something proportional (although a different multiplier) to 4.9E14 (assuming no insulation; the rate can be lowered greatly by preventing the target from "seeing" the ambient environment). Somewhere in between will be the temperature at which the target loses heat (through radiative, convective and conductive pathways) at the same rate it's absorbing heat from the sunlight, which depends very strongly on the insulation as well as the amount of sunlight being focused on it.
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@kazitor said in In other news today...:
edit: importantly, thanks to the focusing apparatus: a lot of that will go straight back to the original heat source.
Careful, we don't want to overheat the sun
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@Rhywden said in In other news today...:
Heliogen's announcement is that its system has now cleared 1,000°C
The solar furnace at Odeillo in the Pyrénées-Orientales in France can reach temperatures up to 3,500 °C
[...] Opening date 1970Error: Achievement not found.
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@dkf said in In other news today...:
Usually you end up limited by your ability to focus.
You not only need to focus, but you need to actually surround the target with the focusing elements. That's why the Odellio solar furnace is shaped as a parabola with rather short focal length. To get wider solid angle from the point of view of the target covered with mirrors. Since the Heliogen's array is just laid on the ground and focuses to much larger distance, it simply can't have anywhere close to the same temperature.
explains the reasons. The summary is:There's another way to think about this property of lenses: They only make light sources take up more of the sky; they can't make the light from any single spot brighter, because it can be shown that making the light from a given direction brighter would violate the rules of étendue. In other words, all a lens system can do is make every line of sight end on the surface of a light source, which is equivalent to making the light source surround the target.
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https://metro.co.uk/2019/11/21/woman-caught-stealing-eight-pairs-jeans-wearing-11192393/
The unnamed woman stands in a bathroom as she takes off pair after pair after pair until she gets down to her knickers. As she removes the clothes, a man filming can be heard counting them as she leaves them round her ankles.
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@Bulb said in In other news today...:
The solar furnace at Odeillo in the Pyrénées-Orientales in France
Ah, that's the one I remembered reading about 40–50 years ago.
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Mr. Trump called Mr. Cook a “very special person” because of his ability to create jobs
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@loopback0 said in In other news today...:
his ability to create jobs
There's now a lot more technicians replacing MacBook keyboards
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Google Stadia, the totally worthwhile endeavor that everyone wanted, is a great success! Their monthly subscription tier totally lets you play all kinds of games in native 4K resolution, much better than you'd get anywh
Oh
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Can't have negative reviews screw the reality distortion field
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@TimeBandit they've had moderators delete questions on the Apple forums asking about third-party repair for years, seems they just recently realized there was another place they control that could also have unflattering opinions on them.
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@Dragoon said in In other news today...:
I don't get what he's complaining about. "Netflix is just doing what everyone else does [i.e. caring about their bottom line and nothing else, and ] Hastings himself would probably like you to think this way [but] the actual truth of the matter is much less complicated. Netflix will do what it can to get you to sign up or keep paying for Netflix [i.e. they care about their bottom line and nothing else]".
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In other news today: Tesla's long-awaited (by Tesla fans at least) pickup truck turns out to look like PS1 Hagrid
https://www.caranddriver.com/tesla/pickup-truck