Raising and Lowering Operators
We introduce the raising and lowering operators for the quantum harmonic oscillator, their relationship to the Hamiltonian, and their commutation relation.
From playlist Quantum Mechanics Uploads
The PETMAN robot was developed by Boston Dynamics with funding from the DoD CBD program. It is used to test the performance of protective clothing designed for hazardous environments. The video shows initial testing in a chemical protection suit and gas mask. PETMAN has sensors embedde
From playlist Best of Science!
Physics Ch 67.1 Advanced E&M: Review Vectors (17 of 55) What is the Del Operator?
Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn that the del operator is an operator that can operate on a scalar function or on a vector function via the dot product
From playlist PHYSICS 67.1 ADVANCED E&M VECTORS & FIELDS
GPS, How does it work? | ICT #12
GPS has already become an integral part of our lives, and you can see a few useful applications from these examples. GPS is really an interesting technology. It uses a system of 24 satellites continuously orbiting the earth, and requires at least four satellites to track your location; it
From playlist Internet & Telecommunication Technology
Robotics is a team sport, bringing together people with varied and sometimes surprising skill sets—from marine helicopter mechanics and machine learning PhDs, to puppeteers and chocolate-makers. Meet some of the X team who are teaching robots how to learn, and hear why diverse perspective
From playlist Robotics
CERN Professions: Electricity at CERN, what a network!
This video is published by our recruitment dept. If you are an electrical engineer, CERN has openings for you.
From playlist CERN Jobs
Quick Look at Google Voice Apps for iOS
Apple recently approved several Google Voice apps on the App Store. We explain why that's rad.
From playlist Quick Looks
Quick Look at Google Voice Apps for iOS
Apple recently approved several Google Voice apps on the App Store. We explain why that's rad.
From playlist Quick Looks
Quantum Field Theory 4b - Second Quantization II
We work out the details of the fermion creation and destruction operators and summarize the quantum field theories of photons and electrons we have developed so far. This video borrows from Chapter 4 of A Pedestrian Approach to Quantum Field Theory by Edward G. Harris (ISBN-13: 978-048678
From playlist Quantum Field Theory
Motorolla Cell Phone: Equipment Autopsy #35
Chris and Dan autopsy an old Motorola cellular phone.
From playlist Equipment Autopsies
Quantum Field Theory 6a - Interacting Fields I
We can now calculate the quantum interaction Hamiltonian for the electron and photon fields. The result is a quantum field theory that can describe the emission and absorption of photons by an atom. Error: At 2:26 omega-sub-k (in the H-hat-sub-r expression) should be outside the parenthe
From playlist Quantum Field Theory
Quantum Field Theory 4a - Second Quantization I
Previously we've seen how to quantize the electromagnetic field. This led us to define operators that create and destroy photons. We want to develop similar operators for electrons. The way we do this is the technique of "second quantization." Photons are bosons, which are not governed by
From playlist Quantum Field Theory
Canonical Commutation Relation
We discuss the canonical commutation relation between position and momentum operators in quantum mechanics.
From playlist Quantum Mechanics Uploads
Polar Coordinates (Gradient) | Lecture 26 | Vector Calculus for Engineers
Definition of polar coordinates and the derivation of the two-dimensional gradient operator. Join me on Coursera: https://www.coursera.org/learn/vector-calculus-engineers Lecture notes at http://www.math.ust.hk/~machas/vector-calculus-for-engineers.pdf Subscribe to my channel: http://
From playlist Vector Calculus for Engineers
Quantum Field Theory 7a Oppenheimer and Bethe I
Two papers, one by J. Robert Oppenheimer and the other by Hans Bethe, "bookend" a period in the development of quantum field theory in which physicists struggled with infinities that kept popping up in calculations and threatened to derail the entire field. Bethe's solution of "mass renorm
From playlist Quantum Field Theory
004 Commutators and Time Evolution (the Time Dependent Schrodinger Equation)
In this series of physics lectures, Professor J.J. Binney explains how probabilities are obtained from quantum amplitudes, why they give rise to quantum interference, the concept of a complete set of amplitudes and how this defines a "quantum state". Notes and problem sets here http://www
From playlist James Binney - 2nd Year Quantum Mechanics
AT&T Archives: Operator! (1938) (Bonus Edition)
For more from the AT&T Archives, visit http://techchannel.att.com/archives Introduction by George Kupczak of the AT&T Archives and History Center Operators in 1938 were an absolutely essential part of the telephone communications network. Usually young women (in 1900 they had to be u
From playlist FSAS Digitale Welten
Quantum Field Theory 3b - Photons II
We consider Fermi's approach to quantizing the electromagnetic field. Errors: At 12:26 I say "plus i a-hat-minus a-hat-plus times ..." I should have said "plus i a-hat-minus minus a-hat-plus times ..."
From playlist Quantum Field Theory