Lecture – 1 Introduction to Quantum Physics;Heisenberg”s uncertainty principle
March 9, 2011 by Actaphysica
Filed under Physics Videos
Lecture Series on Quantum Physics by Prof.V.Balakrishnan, Department of Physics, IIT Madras. For more details on NPTEL visit nptel.iitm.ac.in
Video Rating: 4 / 5
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omg. This lecturer has weird and genius family. his wife is theoretical physicist as well, his son is Professor in the Department of Electrical Engineering and Computer Science at MIT and his daughter is a faculty member at MIT in the Department of Aeronautics and Astronautics.
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@cosg9531
I’m talking about transistor/microchip technology
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@pigeonkid4 My computer was built by foreigners in sweatshops who were paid 25 cents a day, the same as everyone else’s.
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FUCK THE UNCERTAINTY PRINCIPLE DAMIT!!!!!
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@nocciola123456789 No… I guess Ratzinger would completely disagree with him.
Actually, Ratzinger is of the opinion that science and religion are not contradictory and may even suffer from the same “thought diseases” (totalitarianism, to be more specific).
I guess our friend is just unaware of the practical implications of physics… not his fault! Our educational institutes clap hands to science, but fail to make its concepts available for all.
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@RestingMyChemistry could you explain why the product can be 0. I may have missed it, but I didn’t hear such a statement in the lecture. I’m new to this subject and your explanation will be helpful. Thanks
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@Bar0k I think he said if one is set a 0 then the other goes to infinity, resulting in uncertainty. New to this subject so I could be wrong.
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Excellent!
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@RestingMyChemistry I’m not sure where this comment originated from, but this can not be a valid statement. Why? The value of h * c / λ is not a unit of time, it’s a unit of energy. The corresponding uncertainty principle for time is related with energy and although I’m rusty on the subject, regardless if time moves in ‘quantum’ steps or not, (dx)(dPx) >= h/2, not zero.
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In nature, time must move in ‘quantum’ steps as it progresses. It’s the definition of time that we must call into question. The product of the position and momentum of a particle can be 0. It’s time moving in these quantum leaps giving rise to the uncertainty. Therefore:
(dX) (dPx) >= h / 2 changes to (dX) (dPx) >= 0
and
(dT) >= h c / λ
In other words, time progresses forward in discreet amounts defined by h c / λ .
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@chesley69 How do you think your computer got built?
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he lost me at 06:05
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@nementerc –i hav listen lecture of lewin.he is outstanding…..are you talking about paul dirac..?
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