Quantum Mechanics
June 8, 2010 by Actaphysica
Filed under Archive
www.myspace.com The Danish physicist Niels Bohr, who worked in Rutherford’s lab, was the first to describe orbits of fixed size and energy in which electrons are free to travel without losing energy and falling toward the nucleus. According to this model, published in 1913, electrons can only occupy or jump between fixed energy levels and cannot reside in between these levels. In addition, once in their “ground state,” electrons maintain the energy they contain. This energy keeps them in perpetual motion, allowing them to resist the attractive force of the nucleus.
Video Rating: 4 / 5
Dr Quantum – Double Slit Experiment
Video Rating: 4 / 5
![The Dark Matter & Dark Energy [1/5]](http://i.ytimg.com/vi/rLmcbjLVPKc/default.jpg)
we have to have someone like einstein to figure out the questions we have now. the comparrision means someone has to know bout how to time travel TODAY. u say thats impossible but in the world off einstien where people learn to kil with ONE person,he figures out the thing that kills more than thousands of humans. so think bout that
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@Sh3rby Yes, it’s impossible for us to observe particles now, but eventually someone will develop the technology in the future to do so (it might take a thousand years)… did you not read that part of my comment?
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“Well I’m trying to think what I put in… I think I put in ‘why?’ to see if I’d confuse the computer.” – Karl Pilkington
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@Metallic7Dust We have observed elementary particles, such as quarks and gauge bosons. If you were meaning ‘observing’ as in ‘seeing’, we cannot do that. Given that the way we see things is the reflection of wavelengths 400nm – 700nm, it is impossible for us to observe particles. This is due to them being much smaller than the wavelength of visible light, and will consequently not reflect back.
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Eventually we’ll have technology powerful enough to observe exact locations and momentum of electrons, so these theories will have to be manipulated again; like they have been for thousands of years… and then we’ll be able to observe smaller particles… and then smaller… and then smaller… and then… get the picture?
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demit!
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D WHOLE OF QUANTUM PHYSICS ND MUCH BEYOND IS ALREADY EXPLAINED IN FULL DETAILS IN VARIOUS SCRIPTURES OF HINDUISM…..
very few ppl know that max planks father was a religion scientist who explained planc about d intro o fquantum phyics particle called photon in his dream……which he has stated in his autobiography…..
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after nine yrs of unsuccessful research of warner heisenberg along wid bohr….he visited india 2 meet rabindranath tagore who thru just a few qoutes of bhagvadgita gave him the concept of uncertain trajectories of electrons……
jai hind!!!
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for example, the lightbulb, the one who first tought of the lightbulb was probably 10 times smarter then 99% of the people of today, or chess even, the most balanced game ever made even as of today. And probably the one wich requires most brain activity to master. and that game is hundreds of years old, and u tell me people today are intelligent, most of the people never even tried chess.
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@33Barker haha, mate, now calm down, theres a different betwen knowledge and intelligence. theres no garantue that u are a smart person becuse u know alot, well to a degree ofc, mostly its about good memory, and understanding aswell ofc wich makes u smarter then others but CREATIVITY is not something everyone have, Einstein was creative, he found out stuff no one else would ever think of or be able to found out yet of today, no one is even close or close to be close.
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We are “discoverying” new truths. Or in other words, “proving” them with “equations.” But even when you get the “equations,” that won’t get you to experience what the equations point too. So meditation is important. In other words, what truly “Exists” and is possible, is only starting to be “proven.” But many have already known what is possible through their own “experiences.”
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@Luchini690
Alot of people are extremely intelligent these days. Why? Because we have things like the “internet” where people can learn what they want and take in different views and teachings. So I would think a lot of people who exist today “pwned” Einstein in many ways. But yes, Einstein was definately a genius.
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i see how it works now its best i dont give my knowledge away
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@6li6nu6s No I think he was saying that the electron is a particle, but waves dictate its position.
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@rubixor hahaha funny comparison
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Quantum mechanics does not disprove the Bible. It even completely supports everything the Bible says which includes all the miraculous powerful acts of God and His wonderful qualities and attributes evident in all His creations to the nethermost element of our being. Just read the Bible in its entirety. Eeeeaaaww !!
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5:18. Just like whack a mole. As soon as you see it, you swing a hammer at it but it moves so you miss. That’s how it always happens
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niels bohr is a genius and so underated. he’s the guy who pwned einstein
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@6li6nu6s That’s correct. Depends on how you look at it… literally. Observation. Checkout stuff on Superposition, Schrodingers Cat, Hewitt’s Many Worlds Interpretation and the Measurement Problem.
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so. correct me if im wrong. what Dr. michio kaku is saying is, the electron is a wave and a particle, but yet. its also not a wave and not a particle?
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@mssharpie
obviously, photons are ligth particles, we only have them inside our dna.
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could it b that the LIGHT effects the electron (instead of consciousness) and causes the collapse of the wave function?
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BOTH Walter Lewin AND Michio Kaku -damn, whoever made this video went all out on the guests! Both are amazing physicists and even more amazing teachers. Thank you such much for uploading this wonderful little gem.
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@TheEinstienian Can you prove that?
It’s quite clear that if humans have spirits, so do many other animals. Elephants and Dolphins are perfectly capable of making rational decisions, and Macaques are much, much more moral than humans are.
Also, why do we need a spirit? Is it not possible that our brain is just matter that interacts with other matter?
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@dashwood123
heh
Surely, the particles had something better to do than play hide&seek with scientists!
On
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@Gyphia I don’t know enough about the subject to even know what I meant when I commented…cannot find it so have nothing to refer to. What I commented was in the context of the video…I don’t know anyghing about particles and waves on the beach. lol
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@olga2415
I know what you mean. Maybe the act of observing acts like a shallow beach , where sea water, for eg, stops behaving like a wave and collapses into particle motion.?
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Superman’s fall from glory…so sad
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@tomasm2005 simply, 50% would be go through slit 1 and 50% would go through slit 2. You are just pulling the elektron out of it’s quantum state by observing. That’s the whole problem.
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@smilyface38 If u understand then tell me why it happens?
Science is about whys? And you cannot answer every why…
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@smilyface38 Well its easy to understand but tell me why it happened.. LOLzz
Dats where the harder part comes in and science is about whys. At least that is what is known about science.
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@vxt1024 I agree 100%
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kay canceling out is not a physics term especially not at the quantum level
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@ranniskurast No .. what I meant it, what would happen if we placed detectors at both the slits? Which one would detect the electron then ?
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And guess what happened? It turns out you can RETROACTIVELY collapse a wave function. When they had the blind screen up, they got an interference pattern, but when they retracted the screen, they found it had passed through only one, even though they had not actually measured it at the time it was going through the slits. So, information can actually travel through time, since the electron could “decide” whether it had gone through one slit or both, even after it had already done so. Creepy, eh?
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It got even weirder when John A. Wheeler conceived of the “Delayed Choice Experiment,” where the tester would decide whether to measure which slit the electron had gone through AFTER it had already gone through. They put up a screen like the one used in the regular experiment, but they made it retractable, and put a pair of telescopes behind it that could measure its exact position, and they’d only decide whether or not to lower the screen after the electron had already passed through the slit.
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whats more dissturbing then the fact particles can be in more then one place at one tiume. is that when we observe it that function breaks down, make u think eh
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Interesting.
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Interesting.
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@tomasm2005 This would have the same effect. When a quantum particle is measured, it’s wave function collapses into a single point. When it is not measured, it behaves as a wave of possible positions. Where it is measured is irrelevant.
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Hello, I was directed here by a debate on something entirely irrelevant .. as Quantum mechanics is usually cited for everything from homeopathy to magic holy healings by witch doctors.
Anyway, the video was interesting. Presented something I didn’t know before.
However I have a question. What would happen we put detectors near BOTH the slits?
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i love how its dumbed down for us who ARENT physicists like gordan freeman
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this is easy to understand and im only 13
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@eternityisyouth I hate retarded comments on youtube…..but…yours….was brilliant!
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Great video/ great way to explain it!
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holy shit.
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Dr Quantum your the BEST!!
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@eternityisyouth
Blame Jung, he started it when he defined the “Wise Old Man” archetype.
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awesome stuff!
we know nothing, but we try and explain everything.
the universe is way more intricate than we ever imagined.
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Hum..i see that everyday with my workers, they only perform the way they should when im watching them, when im not around,..they’re all over,..taking brakes,smoking,..on the phone..you name it.
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