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Harden up cupcakes

Is This What Quantum Mechanics Looks Like? - Veritasium

dannym3141 says...

To be fair, you were taught this in school if you were taught wave particle duality and the double slit experiment. Look at this. Now imagine a particle bouncing along in very small steps (quantum leaps if you will), and the direction it goes depends on the strength and orientation of the wave where it lands. You may never have been told to think about it like that, but that's what makes physics so amazing that sometimes all it takes is for someone to think about it slightly differently. The information was there all along, but who would imagine the 'particle' bit of an electron interacting with the 'wave' bit - the electron interacts with itself?

I absolutely love it, it's amazing, and simple and beautiful. It may provide insights into new ways we can model quantum behaviour, it might open up new questions to ask.

There's things I'd like to know. First, if the standing waves generated at each step in the droplet's progression interact with each other, the droplet is reacting according to waves it made in the past - what implications does that have for the notion of real particles in a spacetime continuum? For the double slits experiment to work in that model - in the ball on a rubber sheet sense - the sheet would have to stay warped to some extent after the ball had passed. In the quantum sense of the real double slits experiment, we would say it IS a wave, passes through both slits and appears according to statistical probability (the diffraction pattern).

Presumably several droplets released along the same path would go on to take a different route through the slits, to create a diffraction pattern as it must. Perhaps because of fluctuations in the temperature or density of the water at different locations? Is that a limitation of the model or an indicator about the nature of the fabric of spacetime? Perhaps even due to quantum fluctuations in the water particles - the water is never the same twice even if its perfectly still each time - which would potentially mean we're cyclically using quantum mechanics to explain quantum mechanics and we actually haven't explained very much.

The philosophy bit: But this reaches to the heart of the issue with quantum mechanics and perhaps science in general. How accurately can we model reality? The reality is beyond our ability to see, so we can only recreate simpler versions that are always wrong in some way... our idea of what happens - our models - can never be 100% because only a particle in spacetime can perfectly represent a particle in spacetime.

Scientific results and definitions are always defined with limits - "it works like this, within these confines, under these conditions, with these assumptions." There are always error margins. We are always only ever communicating an idea between different consciousnesses, and that idea will never be as true to life as life itself.

Sorry for the wall of text, it's a great and provocative experiment.

TheFreak said:

I hate quantum mechanics and the absurd implications that extrapolate from it. I always believed that one day we would look back and laugh at how wrong it was. Turns out a more reasonable competing theory has been there all along. Why was I not taught this in school.

I get that it's just another theory and that quantum mechanics can't be judged based on intuition that comes from our interaction with the macro world. Still...fuck quantum mechanics.

Where Are My Testicles, Summer?

Enough already, Eric3579 -- let us celebrate you! (Happy Talk Post)

Unity Adam Demo - real time

MonkeySpank says...

The short answer is "It depends!"

I know it's a crappy answer, but there are way too many parameters at play. There are many games today that have scripted scenes in them that are pretty cinematic. Think of GTA III, from 2001. The cut scenes in that game still outshine the actual gameplay of GTA V today.

If the scene is scripted, then all the animation, and camera movement can be fine tuned and all compute resources are pooled into the viewport of the camera. This allows the artists to focus all of the trickery on the shot itself, but not the rest of the world. From a PVS or scene-graph stand point, you have pretty much reduced the complexity to just what you are seeing.

I do not know how they made this demo and cannot comment on it with any authoritative capital. I've written 3D engines before (not for videogames though) and can comment on the technology I think I'm seeing here. My comments are just an opinion based on what I know. I do not have access to Unity and have never used it before. But here it goes:

For a scene like this, there should be reduced/canned computation in:


The shaders, unless they are geometry (the ripping of the skin/flesh in the Adam scene) could or could not be reduced in scope and complexity. I am not sure if they are scripted or dynamic. By scripted, I mean a geometry shader that reads vertex data from a VBO stream or some memory buffer instead of computing the vertices on the fly. It's still real-time, just not dynamic.

Most of the graphics you see here are standard applications of technology that's been around for a while:


The particle system seems pretty standard as well.

This is a great demo and I am extremely impressed with the art direction, but the engine itself is, after all, Unity with PBR for the characters, and maybe Global Illumation for the indoor scenes, which I believe they licensed from Geomerics.

TheFreak said:

How far behind do the playable game graphics tend to trail behind the demos?

Feels like it's about 2 years.

That's one of the reasons I enjoy demos, because I know that one day soon I'll get to play games with that level of graphics.

Unity Adam Demo - real time

MonkeySpank says...

They cannot make a game from this. This has a fixed PVS which allows them to pool all resources in the shot where the camera is facing. It's still real-time, but you can't free roam. There are some neat shaders applied here, but I'm more impressed with the sound than anything else.

Payback said:

If this is a game, I'd buy it.
If this is a movie, I'd rent it.
If this is a tech demo, I'd demand they make a game or a movie from it. This is an interesting universe.

Samantha Bee on Orlando - Again? Again.

ChaosEngine says...

Slippery slope fallacy.
"If we allow gays to marry, what's next? Can I marry my dog?"

No-one is talking about banning guns. I wouldn't support that myself. I have friends who are hunters and target shooters.

But be reasonable; you can have a gun for target shooting or hunting or even "home defence" (if you're really that paranoid), but you don't need an AR-15 or anything with a high capacity magazine and it's not unreasonable to make sure that people who own guns aren't complete nutjobs.

NZ is in the top 15% of gun ownership rates per capita (22 guns per 100 people), but our average annual firearm homicide rate for the last 30 years or so is ~0.2 deaths per 100k people.

Compare that to the USA. The US tops the chart of gun ownership with 112 guns per 100 people. So the gun ownership rate is 5 times that of NZ, but the average annual firearm homicide rate is 4 deaths per 100k people. That's 20 times the number of murders. Even if you allow for the higher gun ownership rate, you're still 4 times worse than NZ.

And the difference is simple: we have sensible gun ownership laws.

I saw a great post the other day.
"The conservative mind:
Abortions? BAN THEM!
Gay Marriage? BAN IT!
Marijuana? BAN IT!
Guns? eh, banning things never works"

But hey, you're gonna need those guns for when Donary Trumpton ushers in a tyrannical dictatorship. Good luck with that; let me know how you get on with an AR-15 versus a predator drone.

Mordhaus said:

That is not the point. Government works a certain way and rarely is it in the favor of individual liberties. We knee jerked after 9/11 and created the Patriot Act, you know, the set of rules that gave us torture, drone strikes/raids into sovereign nations without their permission, and the NSA checking everything.

If you ban people from one of their constitutional rights because they end up on a government watchlist, then you have set a precedent for further banning. Then next we can torture people in lieu of the 5th amendment because they are on a watchlist (oh wait, we sorta already did that to a couple of us citizens in Guantanamo). The FBI fucked up and removed this guy from surveillance, even though he had ample terrorist cred. That shouldn't have happened, but should we lose our freedom because of their screw up?

The Julie Ruin - Run Fast (Official Lyric Video)

WeedandWeirdness jokingly says...

Geez doll! That sounds pretty painful. What the shit kind of website is this?!? Do I still have time to make it out alive...

Payback said:

This is nothing, wait until you get triple secret probation with a side of condescending subtext.


I still have scars.

To Scale: The Solar System

avengers infinity wars teaser trailer

RFlagg says...

There are also rumors that Disney and Sony worked out a deal for Spider Man to appear in some of the other movies, while Sony retains Spider Man for solo films... Given Spider Man's roll in Civil War, I'd guess that's the movie he's most likely to appear in. I wonder if that deal means that some of the MCU characters can cross over to the Spider Man movies to help boost those. If that's all it took to make the deal, if I were either studio, I'd do it. Cross promotion like that... hecks yeah. Too bad Fox is still apparently being stubborn. Still, exciting times.

Also, a teaser trailer for a movie that is still 4 and 5 years out. That's got to be near a record.

Audi Traffic Light Assistance

newtboy says...

Perhaps you're right and they thought of that...but also perhaps not.
I must admit, I had not taken it being only on Audi's into account.
For jmd: Where I live, in the boondocks of far N Cali., we still have timed lights, and at certain times of day they are timed to force you to stop at (at best) every other block unless you speed like a demon. In order to hit every light green, you would have to either drive double the limit, or less than 1/2. They do this as a speed control measure, even though the limit is 35mph on main street. All that said, I doubt these old style traffic lights would 'talk' to the cars computer, making the whole point moot.
When my car drives itself I'll be far more forgiving of poor drivers, because it will be the car dealing with their mistakes while I just read a book...I can't wait. Until then, I'm a victim of my own limited patience.
I recall in Houston the freeways have a MINIMUM speed limit of 45 (which is ridiculous to anyone who has ever driven in Houston traffic...but I digress). I think minimum limits are good ideas. I think moving violations for people driving slow in the fast/passing lane would do the most to increase the flow of traffic, but that's just me.

Quboid said:

I really don't think it would ever tell anyone to drive at 5MPH down main street. The people making this have probably given the system enough thought to take reasonable driving speeds into account.

I also doubt that a significant number of people would follow that sort of instruction. There are a lot of stupid and/or selfish drivers out there but not many who would inconvenience themselves in this manner. (By reputation, Audi drivers aren't often accused of driving too slowly.)

Aren't lights typically timed to help people make them at the speed limit, regardless of how busy the area is (as the speed limit is already accounting for this)? I'm certainly not going to condemn anyone for driving over the speed limit but if other drivers who do stick to the limit are a problem then you shouldn't be driving. Besides, we'll have to get used to keeping to the speed limits when our cars drive themselves.

Babymetal: J-pop-metal crossover

Picking up a Hammer on the Moon

Chairman_woo says...

Were you not paying attention in physics class the day they explained the difference between mass and weight? As @Payback pointed out the energy required to overcome inertia is the same no matter what the gravity, low gravity simply allows you to "spread the duration" of the force like a fulcrum.

I.e. it would be easier than on earth but you still have to apply enough force to move 2-300kg of mass, you just have the option of doing so less rapidly (making it easier but not easy).

Even if this were not the case your argument still makes no sense. If it was indeed faked then surely they were on wires anyway? How else are you proposing they replicated the effects of low gravity?

The fact your comment got 3 likes is rather depressing. As someone who makes researching conspiracy theories a borderline obsessive hobby I can say with some confidence that the whole faked moon landing thing is about the most debunk-able one ever conceived. It is an insult to the very term "conspiracy theory" and helps give the rest of us a bad name .

Radiation belt? = 7 mins of expertly calculated exposure, there is a 1000ish page NASA manual on how they did this.

Cameras? = they had about 20 DIFFERENT cameras & much like anyone else would the crappy poorly framed or exposed shots weren't used for publicity

Multiple light sources? = The surface of the moon is both highly reflective and uneven. (mythbusters did the shit out of that one)

Most complicated machine ever built? = Actually launched, several times, to the freaking moon and back!

Waving flag? = Funny how every single shot of the flag waving is when someone is holding/touching it eh? (& what kind of retard leaves evidence of wind in the most expensive coverup of all time?)

The Russian space programme? = They just turned a blind eye to their arch rivals lauding it over them? They were in on it? You have to get really paranoid before that one starts to make any sense whatsoever.

etc. etc. etc.

I have a lot of time for conspiracy theories and I'm happy to speculate with the best of them but I've yet to find a single good argument for the landing not happening. I can maybe work with the possibility that some things were omitted/covered up (Monoliths etc.) because this could not be conclusively refuted by empirical facts. Suggesting that it never happened however is so easy to disprove it blows my mind that people still have time for the idea.

For your own sake try looking into the opposing arguments. There are plenty people with PHD's and direct experience who are happy to take you through the counters to all this stuff. And they back it up with actual evidence and experiments rather than conjecture and selective information. Your mind will thank you for it

MichaelL said:

Yeah, why wouldn't he just get into the pushup position, grab it then push hard to upright himself. Gravity on the moon is only 1/6 that of earth.

I'll tell you why... cause it's FAKE! He's in a movie studio in a heavy suit so hasn't the strength to be able to push himself upright.

Bush Won. Get Over It.

chingalera says...

He still has time to insure that his swan-styley lecture circuit will consists of stops primarily abroad or insulated within the U.N as well
Piece a mottled work

blankfist said:

I'm just glad I was proven wrong and Obama has ended all the wars in the Middle East and chosen to also not rattle the saber of war at Syria, Libya, Yemen, Pakistan, et. al.

*promote

Maher exposes Republicans Secret Rules

bareboards2 says...

@eric3579, here is a transcript. So you can get the info without the annoying delivery:


And finally, New Rule: there are scandals, and then there are scandals. And perspective is important. Yes, to explain Benghazi, Susan Rice used talking points. But at least she didn't have to read them off her hand! [graphic of Palin looking into her palm]

Now this week, someone was taken off a cross-country flight in handcuffs for singing "I Will Always Love You" for three straight hours. And that's still fewer times has said "Benghazi". I've seen this woman [Megyn Kelly] say Benghazi on my TV so many times, I don't know if it's a problem with the set, or I'm in an Asian horror movie, and there's a monster named Benghazi.

Congressman and friend of Real Time Darrell Issa is the Chairman of the Oversight Committee, and as most Californians know, he made his fortune in car alarms. And now, ironically, has become a loud, repetitive, but ultimately pointless device that you wish to God someone would shut off so you could get some sleep. (audience applause)

But here's the difference between Darrell Issa and a car alarm. Sometimes when a car alarm goes off, there's an actual crime. I keep looking for the crime here, I feel like Reese Witherspoon arguing with the cop. Why are you arresting me? Susan Rice said "mob" instead of "al-Qaeda"? Obama said "act of terror" instead of "terrorist act"?

Republicans are constantly coming up with these never before stated secret rules, that they only tell you about once you've broken them.

"You don't make important speeches from a teleprompter!"

OK.

"No golfing until we have a budget!"

All right.

"Thou shalt not criticize the President when he's on foreign soil, unless he's a Democrat, of course, then it's OK."

Congressman Peter King thundered that the President was almost four minutes into his first Benghazi statement before he mentioned an act of terror! Ah yes, the four-minute rule. Fuck, how could I forget?!

'Scuse me, Nixon ran a burglary ring out of the Oval Office. Reagan traded arms with terrorists. Bush ginned up a war where thousands died by sending Colin Powell to lie to the UN with props, remember that? He turned an American hero into General Carrot Top! But I let it go. I said this is the business we've chosen.

But please, don't tell me that freedom died because Susan Rice broke the scared bond between citizens and talk shows. In a poll this week, 4 in 10 Republicans said Benghazi is the worst scandal in American history. Second worst? Kanye West snatching the mic from Taylor Swift.

If you think Benghazi is worse than slavery, the Trail of Tears, Japanese internment, Tuskegee, purposefully injecting Guatemalan mental patients with syphilis, lying about WMDs, and the fact that banks today are still foreclosing on mortgages they don't own, then your hard-on for Obama has lasted more than four hours, and you need to call a doctor. (wild audience cheering and applause)

And while the press has been occupied with scandal, the biggest scandal, and the most important story of the century so far, happened last week. Scientists reported that the level of carbon dioxide in the atmosphere has passed the long-feared milestone of 400 parts per million. And unless you're a chimney sweep, that's bad news. Because humans have never lived through it.

You think Susan Rice gave bogus talking points about Benghazi? What about the bullshit talking points the entire Republican Party has been spewing on climate change since the 90s? (audience applause)

I wanna see the e-mails to find out who came up with the talking points that global warming is just a theory, and that it needs more study, and climate change is a hoax. The Obama administration isn't dirty, the air is.



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