Dr. Quantum Explains Double Slit Experiment

[InuShonen]

oh god!! what does it all meeeaan?!?!!!!

[martiandog89]

Yeah... electrons are cool.

[kionay]

it makes it sound like the act of observing causes the change

rather than how they are observed

i'd assume that the methods for observing electrons or other particles uses some type of sonar-like device, obviously not sonar exactly, but something that bounces off the particles to see where they are

i'd say that THAT is what is causing the change in patterns

[leet512]

@kionay aye! the key is to go back to primary sources and consider what interactive traits the so-called 100% passive measuring device actually has... perhaps it truly is fully passive but i have serious doubts that is the case

many of these documentaries about QM are too pre-chewed to be taken seriously in my opinion

[Honeysucklebommie]

@kionay IF these professors havent thought of that (which Im sure they have) and we've just collectively financed them billions of tax dollars for the hadron collator: If you are right then we are all in the poop. 

[scooterguy86]

@kionay It is the usage of photons that they use for measuring. The act of measurement (which some called observing) collapse the wave function. But then there is the Heisenburg Uncertainty Principle that says that regardless of our measurements both the exact position and velocity of a particle cannot be known at the same time. This is a property of nature regardless of our measuring devices.

[shredder66691]

@kionay I don't mean to be rude, but I think you are missing the point. When observing the electrons or photons move through the slits, the matter reorganizes itself in the shape of the slits that they passed through. The 'observer' doesn't have to be a machine, it can be a human or just a camera. If a human or camera, there is likely to be no interference with the matter moving through the slits, yet the change in pattern (organization of matter) continues.

[kionay]

@shredder66691 matter does not reorganize itself to the slits, but the slits is the opening by which matter is allowed to pass, not blocked, an analogy might be that a shadow is not a reorganization of light, but a lack thereof

[v1tusphoenix]

only is physics the phrase "Let's go quantum!" sounds EPIC!!

[Songanoncrit]

What if someone actually knew why this happened it changed?

Some day some autistic kid in china is going to be mumbling numbers to himself and when they do this test it won't work anymore.

[a1mint]

I have an idea that might offer a new explanation, but I need a true quantum physicist to discuss this with...

[Soulless99]

But they should have mentioned that the electron detector will, by its means of detection, apply a physical force upon the electron that will disturb its normal course of action and interfere with the results of the experiment.

This "collapse of wave function" is well known and is considered to be an explanation of this duality of particles.

So this is not a sign of some mysterious unknown force within the quantum world. For that, check out quantum entanglement instead :)

[Soulless99]

Seriously....this was the best and easiest to grasp explanation of the subject ive ever seen. I had understood this concept long before finding this but it had to be commented for its brilliance!

[CPPTutorialsCPP]

Weird

[Grizzly0679]

So what does this all mean to the lay person? IS theory trying to say every physical thing present in the world(possibly even this world) are existing in many places at once and it is because of an observer that that things take a...don;t know how to say...things are the way they are now? Like when I look at a painting in room am i to believe it exist everywhere at once and nowhere but when I look at it takes its place on the wall? how then could say my gf see it in the same place as me? chance?

[sco40]

Im sure Dr. Kletsov can make sense out of this.

[Dalejm6]

@sco40 lmao

[uncoolnerd]

@sco40 phys 1250 at 9 am? lololol

[tattoofthesun]

what if the observation module disturbed the wave pattern in the air?

in the wave demonstration, the radiation pattern would have been disturbed if there was something IN the water.

What if the AIR was disturbed?

I am uneducated in higher physics, so if i am wrong please direct me.

[StL33T]

Can the quantum wave be described as "physical"?

[kevinstuartfr0st]

watch?v=2KD9ICmaiGs

[ajeetkunedodude4u2]

So if we are waves of matter and are being observed/ watched in order to become materialistic We were not being watched then we would be liquidated.

So WHO is watching US?

Who is outside our universe watching us in order for us to be solid?

God?

Could this be how we have our existence.

Waves of energy which become solid when conscious.

[1971SuperLead]

@ajeetkunedodude4u2 That is brilliant!

[FlexibleElf]

The observer is an electronic device most likely disturbing the outcome of the test. Occam's razor suggests simply that an addition to the test, which causes the test to produce a different result, means the addition interferes with the test, not by simply 'observing' but by being another obstacle. I know it's supposed to be mysterious and cool, but this has already been pretty adequately explained.

[PeaceWithinFear]

The question is where was the observer located during the experiment? Maybe since one observer was used it off balanced the wave, what would happen if two observers where used placed exactly same spot but on opposite sides? How do they observe the electron? A positive charge substance to attract the electron? We need more information please.

[stretmediq]

There is no problem if you think of it in purely mathematical terms. The "problem" only arises when you try to think of it in material terms. There is no particle going through the slits. Only probability waves. Nothing more.

[stretmediq]

BTW the only people who mentioned God here are those who seem to be those most upset with the experiments results. Why?

[Telehelper]

Even if true, this video is not convincing. It lacks way too much information.

For instance, what equipment was used for the experiment?

How the hell did they fire ONE electron at a time?!?!?!?!

What kind of wall did they use on the electron level? Made out of nanotubes i assume?

What the hell was that eye blinking shit? Did they use a camera?? A camera as big as an electron? A microscope camera????

[Telehelper]

continued....

And if they DID use something to observe the electron, what the hell were they doing previously to observe? Just looking at results?

This video is a pure scam.

[giotubless]

Virginie is my Favourite Astrophysician!

[Blackmark52]

"The electron behaved differently, as if it were AWARE that it was being watched."

I really wish people that explain physics wouldn't resort to Intelligent Entity imagery. I can just see every theist concluding that this is proof of God's existence. They should make it clear that observing doesn't mean the particle isn't acted upon.

[dementiadeath]

that is obviously your conclusion otherwise you wouldnt have pointed it out.

[Blackmark52]

I'm not sure I understand your comment but guess that you are one of those that doesn't understand what observe means in the context of this experiment. It's akin to knowing what pocket a billiard ball is going into by having a blind person shoot a cue ball at the pocket and listening for a clack. Obviously if there's a clack, the billiard ball doesn't need to be aware of the observer, it's course is affected by the method of observation.

[Telehelper]

exactly. im sure this whole idea was just a weak attempt to prove Gods existence -sigh-

[Svelte2210]

All particles have a wave function. All our communications can be measured within the frequency of a hydrogen atom. Therefor, the illusion is simply the idea that there is a static particle. All phenomena have the potential to be at any point in space/time. The observation is merely a reflection of our limited consciousness. We cannot truly observe time. We can measure it but only in the present moment. It shows that what we see as a particle is really a moment of a wave function.

[darwiniantheory]

You observe the particle/quantum by sending a beam to it, this effects it so you can only know either the possition or the speed but never both. It's called the uncertanty principle. So it's not the looking really it's poking it. Hope that clears it up. Watch cosmos with carl Sagan and get audio books by Stephen Hawkins to learn more I guess

[GMSkel]

so by "shooting" photons at the electrons; observing, the electrons cease to act like a wave, and act like the marbles/matter... what does this mean?

[superwazn]

it means that what we do in order to observe the electron, the electron itself is effected and changes, it isnt the same kind of electron as the one that doesnt get interacted with for the sake of observance. apparently, observing it changes it so that it behaves differently. i guess no one is sure how it does that, but i dont see why it too hard to understand that observing it changes it.

[molymoomillk]

it obvious the electrons know there beeing wached so that diside to act in a difrent way that saying " thing chance only when you watch them " is partly right... the microscopic world is... well strange or alive

[eraserx90]

what does he mean the electron behaved differently when they were observing it...

[bigdaddycabic]

I think this should only be taken at face value - it's a vid on Youtube - not a formal science lesson. This, to me, belongs in the same category as the cell phone popped popcorn..

Do you really expect to garner a formal understanding of physics, in 5:12?

[dementiadeath]

its a credited experiment.

[evilsinz]

this video is bullshit.. sorry mystics =( they acts as waves, not particles that enter a super magic dimension where particles manifest themselves in the conciousness of the human mind as singularites that interfere with themselves only to hide as superposition awarenessness blah blah..

Its just so damn small we can't test it very well. Nobody even knows what a particle looks like.. and a wave isn't an object, its a flow of energy.. do some acid and just guess, you'll be just as right.

[tacktitioner]

maybe its our collective conscious that is changing reality to suite our forced understanding or programming if you will, of what is what and how.

[samgee2007]

islam dont beleieve in quantum theory

[smartererer]

"If only one [electron] is involved, it must be detected at one or the other [slit], and its continued path goes forward only from the slit where it was detected." NO MENTION IS MADE OF HOW WAVES ACT IN A 1 SLIT EXPERIMENT AND HOW THIS EXPERIMENT SHOWS AN ELECTRON GOING THRU A SLIT AND THEN NOT BEHAVING LIKE A WAVE BECAUSE IT GOES THRU 1 SLIT NOT 2 THIS IS SCIENTOLOGY

[Muvlonion]

scientology? so xenu did it?

[andid]

This video is clear and informational from 3:50 and before. From that point, this video is pseudoscience used to promote "The Secret"/"What the **** Do We Know?". Electrons, Photons, etc. do not go back to behaving like particles when observed. Look up the experiment for yourself. The wave-particle duality is interesting, but it isn't magic and it can't tell when human beings are watching.

[ericxxxway]

God I love learning. No matter what you believe in this world and us alike are special, no more us than any other living being because life it's self and everything that includes is so special and amazing. We as a race of beings are becoming smarter and more enlightened, has anybody else noticed this? We are growing and I believe that we are beginning to use more of our brains than we used to

[bondita]

to always find God

[yormato666]

e=McCain 2052

[Dizzletrout]

Wait how do you observe a single electron by using say a proton to interact with it?? I cant make a educated Idea if I dont know the whole story :(

[grasshopa]

Headfuck! Is this all true?

[revolutionpm]

THE SIMPLE ANSWER:M.A.D.S.=S.A.D.S.

EXPLANATION:

M.A.D.S.= MALE ANGLE of DANGLING SAUSAGE OR (PENOID TO THE GAY ENTHUSIAST),

IS DIRECTLY PROPORTIONAL TO....

S.A.D.S.= SIZE A Da SLIT (PUSCUIT TO THE LESS-IE ENTHUSIAST))

THIS IS THE LOWEST COMMON DENOMINATOR IN PHYSICS.

[HylianSpirit]

My mind is completely blown.

[bestthealan]

It would clearly seem the act of observation changed the electron from a wave to a particle. Like an electric field changed it's path,

[Iarebearman]

Excuse me while i clean up this pile of bricks.

[dracoIee]

wtf o god

im so stupid

[ronmann606]

Although I know nothing about the measurement equipment, is it possible that it is only capable of observing particulate properties and not wave properties? It seems like a more rational explanation than "the electron knows its been observed." Either way a piece of this puzzle is certainly missing.

[ExtantFrodo]

"Although I know nothing about the measurement equipment, is it possible that it is only capable of observing particulate properties and not wave properties? It seems like a more rational explanation than "the electron knows its been observed.""

That's a very astute observation ronmann.

[LiquidNsolidus]

LOL I feel stupid I had to have cartoon animation to explain this to me T_T

[0Tillz0]

me too.

[kosalet]

A very good.

[tkwndo55]

my take is that it problem with the measurement device..

so like.. whatever it is they do when they measure which hole it goes through, is not attractive for the electron, so goes the other hole.

[OriginalDaVe]

Er, nah.

It's just to do with probabilities. 'Collapse' the wave function changes the probabilities for the matter (as probability = square of wave function). So, when not observing, the probability of the electron is the sum of probabilities of it going through the 1st slit + 2nd slit + no slit + both slits. When you observe and know which one it goes through, it is simply the sum of the probabilities that it goes through either the 1st or the 2nd slit.

[OriginalDaVe]

(BTW, I'm a 1st-year student, so I can't really explain it better than that.)

[polidic]

Either way you look at it - there should be no change in outcome just because you look at it.

Thats predetermination how do you explain that?

[Dizzletrout]

maybe cause your adding another probability for the electron to go to and by observing your taking away some sort of energy from the electron.........

[hankaaron1961]

Dizzletrout, I agree with you. I think by observing, we are interacting with the particles which changes the outcome.

[Pimpmastahanhduece]

last comment, i have designed an experiment that needs a recreation of this experiment, and some time on a computer with some hardware alrdy in place which needs permission to use. wanna discover multiple realities? send me a personal messege to my youtube page or leave a comment on the board if your interested in it.

[Pimpmastahanhduece]

*confirm the existence of multiple realities within this one universe.

[Pimpmastahanhduece]

what the hell does the electron give a crap when a photon bounces off it into either a device which relays information to a screen to our consciousness or whether we didnt care about observing it and let it collide with the wall of the room? it means that our observation no matter how indirect had ramifications on the physical properties of a subatomic particle.

[Pimpmastahanhduece]

speaking of physics, living things must be interpreted as just matter like the air in the room or the drywall. mental action made this occur and it is proven by the removal of close observation vs a couple humans standing behind the cathode ray tube. this is very real and it is the reason Einstein died never accepting quantum mechanics.

[Pimpmastahanhduece]

As he said in a nonliteral sense,"God doesnt roll dice".Is the uncertainty principle just for us to help us understand things that fundementally cannot be perfectly calculated yet if it could the universe would be as predictable as a function f(x)given we know all the formulas to take into account,or do alternate realites exist in the same universe ignoring paradoxes?does this suggest consciousness if far more integrated with physics than we knew just our brains make it clear with senses & logic

[Pimpmastahanhduece]

in the end what i think is that the electron is conscious only to the point that it can just react to a consciousness more adept by becoming solid or follow a undisturbed path like energy. the lowest form of awareness, but how can it observe us? we have senses and complex circuitry and chemical reactions to back our mind, but maybe our brains function on dimensions we dont know about and allows extreme processing speed with a full mind and seamlessly infinite memory storage with immediate recall

[LimpLoser]

" goes through both slits and interferes with itself" sounds like porno too me.

[silentrage]

One concept this video neglected to explain is HOW the observation is made.

I'm no expert so please correct me if I'm wrong.

You obviously can't see the electron, so a light ray is shot at it and the amount of defraction is measured that indicates where the electron is.

[silentrage]

The accuracy of the measurement depends on the wavelength of the light, the less energy light has, the longer its wavelength.

The longer wavelength, the longer the distance between the peaks and troughs of the lightwave, and the more inaccurate the measurement is. Because the light doesn't "reveal" the electron where there is no energy (in the troughs).

[silentrage]

On the other hand a high energy light beam which has shorter wavelength is able to more accurately measure the position of the electron, but its strong energy also deflects the electron more thus making the result more inaccurate.

So the more accurately you Try to measure an electron's position and velocity, the less accuracy you get.

[Kaleetos]

...I'm never going to fall asleep tonight.

[88ale]

So electrons are making fun of Human Beings ? They don't want us to watch them ? How can they know we are watching them ? Or is some sort of God that do this to electrons ? I'm a bit confused :P

Anyhow AWESOME experiment !

[n1bigdaddy]

oh i cant understand it

so a god must have done it

do i see a repeating cycle here?

[88ale]

I haven't said that a God must have done it. Neither I've said that a God mustn't have done it. How could I state that ? I was just speculating. By the way I hope you're not an atheist, they make my sick.

God is our savior and will save you too, even if you don't believe in him. Pray the Lord !

[n1bigdaddy]

im not gonna start a religious discussion with you

yes im an atheist and christians dont make me sick i just think you people are ignorant or willfully ignorant

nah im not gonna pray to something that probably doesnt exist and even if he existed i wouldnt pray to him cause if the bible story's are true i think he is an asshole

[Dizzletrout]

OMG you know the god. Fristilar the God of Bullshit:).......Thinking about this more I come to a Idea that maybe the reason why it seems there is no repetition is cause we cant see the whole picture. Maybe when we find and understand the other dimensions other then what we can see then we can finally predict where the object will go like a rocket around our earth.

[dialekt24]

Real good

[IrusNash]

man... thanks for the upload. it was a refreshing look at a beautiful concept. too bad most of the comments here are quite... critical.

just ignore quantum superposition before thinking ahead about electron diffraction. obviously, you guys haven't done any research. i'm not gonna help you out there, but just look up diffraction, and the principle of superposition, and really, think of waves classically first.

[emman566]

love Dr. quantum

[bedearmond]

Are any of you physicists??? no and if you are please comment. There claim shows intensity in the center, but also shows, almost as intense points of contact all over the board.

you propose the two waves would leave two marks on the wall? I dont need to do the expiriment to know how waves of water can bounce off, and affect eachother

[vi67]

(I agree with vondelmolen) "you people are kinda blind. do you really beleave this? well i don't! it's just a psychological game".

Yes, Dr. Quantum tells you want he wants you to see... despite incorrect second premise.

[vi67]

The video does NOT show what he is explaining

For example he states, "Places where the TWO tops meet have the highest intensity bright lines and where they cancel there is nothing."

So, the two water waves approach the wall (with one canceling the other in "center" of wall), yet their claim shows intensity in center-- contradiction!

The two wave example is incorrect, we cannot comment on the electron portion as it is conjecture.

[bicnarok]

This is total rubbish. (2,04) An electron isn´t matter & isn´t like a marble. As for the observer making the Electron change its mind, in a way yep, the actual EXPERIMENT is faulty and interferes with the electron:)

[vi67]

I declare the two-wave premise as incorrect.

Looking at the model, there are three distinct "lines" of cancellation (fact).

We must define cancel !

Does it equal: "multiply", or "nullifies the ALL portions of wave it passes thru")?

I propose each wave's crest (of each slit) reaches the wall directly in front of the slit.

(ie, there whould be only two lit lines on wall.)

Please elaborate (anyone).

[Logtouchin]

As if to imply that you know anything "bicnarok". They're not saying that electrons are marbles. It's an example. Why do people get offended by quantum physics? Maybe because they usually don't know what the hell they're talking about.

[Ren95]

@Logtouchin They get offended? Really?

I have...seen people act this way before. It makes me sad :(

People dont allow... I dont know. People can be very set in one way of veiwing things - can never consider another. Cant open their minds, consider every possibiltiy. 

[takingcare]

So an electron moves in a wave of infinite possibilities until an observer(thought energy) narrows it down to expectation.

This also proves there is limitation in our thinking.

This holds true with the words of Jesus (Mathew 17:20) as he said... you can command a mountain to move itself into the ocean and it would happen if only you believe.

[vondelmolen]

you people are kinda blind. do you really beleave this? well i don't! it's just a psychological game that he's playing with your mind. like electrons would behave different if you would watch them sure .... btw how can you fire an electron if your "gun machine" is build out of neutrons, protons and electons! if you wanna know the real stuff just look up cern (The world's largest particle physics laboratory)

[drums4lyf]

You've obviously never actually studied quantum physics before. Yes, this does really happen, and having a "gun machine" made of protons, neutrons, and electrons has nothing to do with being able to fire electrons. What are you talking about? Have you ever heard of a cathode ray tube? I believe that's how this experiment was initially performed. Also, if you're going to try to sound smart and get people to learn the so-called "real stuff", maybe you should learn how to spell first :)

[cr656565]

@drums4lyf are you talking about the vid or another comment?

[notToast]

They don't shoot electrons with guns, that's just how this video represented it so it can be easier to understand. I think they fire their electrons with positive electricity charges or something.

[vi67]

I declare the two-wave premise as incorrect.

Looking at the model, there are three distinct "lines" of cancellation (fact).

We must define cancel !

Does it equal: "multiply", or "nullifies the ALL portions of wave it passes thru")?

[NeoCritical]

dam nigga dis shitz be trip me out. dis nigga dun made a nigga think god dam. electro disco fisco sience nigga! da hells a quantum?

[sururi]

Hem dalga hem de tanecik özelliği gösteriyor foton. Çok zor değil anlamak...

[jbrownoz82]

The term "observing" is misleading. The question is whether the information is available or not. If the information about which slit the e past through was available, the superposition of states would collapse and interference pattern would dissapear even if no on "observed" the information.

[DragonQuicksilver]

Quantum physics is sooooooooo awesome!!!! "If a tree falls in a forest and no one is around, does it make sound?" I love it, it's a junction where science and philosophy meet. =D

[tnguyen603]

quantum physic is NOT as beautiful as u believe it to be or how the media portrays it to be... it is merely just a beautiful concept, but in all honestly --- it's wierd and mathematical by nature...

[DragonQuicksilver]

Depends on your perspective, I guess. ^^

[getupkid185]

Any person educated in Physics would tell one that the "scientists" in "What the Bleep" were not professional physicists at all, and the fact that they have that nutcase JZ Knight providing us information and ideas completely discredits the accuracy of the movie. Do yourself a favor and go pick up a textbook on quantum mechanics if you want to truly understand it.

[pmWEIERDO]

This was taken from a documentary as you can see at the end of the video. The documentary is called "What the bleep! Down the Rabbit Hole" and I reccommend you all watch it.

[neallasta]

observing an electron by looking at it means that a photon bounces off of that electron towards your eye.

when the electron and the photon collides, things happen.

[intelsilver]

i hope ppl dont believe this, electrons don't think

[elemeone]

That happen because the observer affects on the mesure. You can´t understand this if you don´t know about quantum physics.

[bubonicnate]

thanx for posting this

[Hustada]

Thats because there really isnt an explanation yet.

[WinterXL]

woah.

[intj1]

Good video, but doesnt provide enough explanation at the end.

[Daanando]

great video, but you could have explained that observing here is very different than what we think of it in our day to day life.

[AmyK007]

Love this.