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10 videos · 5 h 7 min

  • Lecture · Yale

    23. Quantum Mechanics V: Particle in a Box

    YaleCourses · Ramamurti Shankar · 2010

    Ramamurti Shankar's Yale lecture (PHYS 201, recorded 2010) opens by reviewing how to predict energy measurements from a superposition, revisits the particle on a ring, and gives the particle in a box its full treatment from about the 19-minute mark to the 54-minute mark. The last quarter hour studies scattering, where a particle enters a classically forbidden region, a perfect bridge to the next chapter.

  • Lecture · MIT

    Infinite square well energy eigenstates

    MIT OpenCourseWare · Barton Zwiebach

    In this MIT 8.04 segment Barton Zwiebach builds the box from the walls inward: why an infinite potential forces ψ = 0 outside, why continuity then pins ψ to zero at both walls, and why the cosine drops out. He carries straight on into section 2 (n = 0 gives no particle, negative n only flips the sign, and sine squared averaging to one half fixes the normalization); note that he calls the width a, not L.

  • Lecture · Stanford

    Superposition for the particle in a box – David Miller

    David Miller Quantum Mechanics Courses · David A. B. Miller

    Miller puts the particle in an equal superposition of the first and second box states, gives each its own time factor exp(−iEₙt/ħ), and shows that the probability density gains a term oscillating at angular frequency (E₂ − E₁)/ħ = 3E₁/ħ. Watch for his point that only the energy difference matters, never where you set the zero of energy: section 5's sloshing, drawn step by step.

  • Demo · Iowa

    Chem 3440 Cyanine Dyes Quantum Dots Experiment

    Department of Chemistry at the University of Iowa

    The particle-in-a-box lab as a university physical-chemistry course runs it, covering both cyanine dyes and quantum dots; its description marks sample preparation at 0:57 and the experiment at 2:42. Section 6's two kinds of real box in one teaching lab; compare what you see with its prediction that longer chains and bigger dots absorb redder light.

  • Lecture · MIT

    Lecture 7: More on Energy Eigenstates

    MIT OpenCourseWare · Allan Adams

    From 20:58 Allan Adams plots the lowest box states, contrasts them with a classical particle bouncing at constant speed, whose probability is flat, then takes n to 10,000: a measurement too coarse to resolve L/10,000 sees the flat classical distribution, section 7's correspondence argument in five minutes. He labels the ground state ψ₀, so his n is one less than the lesson's.

  • Lecture · MIT

    5. Quantum Mechanics: Free Particle and Particle in 1D Box

    MIT OpenCourseWare · Robert Field · 2017

    The lecture from MIT 5.61 Physical Chemistry (Robert Field, 2017) that goes with Chapter 11. The whole course is in the Lecture Hall.

  • Lecture · Oxford

    013 Hilary: The Square Well

    University of Oxford · James Binney · 2009–10

    The lecture from University of Oxford Quantum Mechanics (James Binney, 2009–10) that goes with Chapter 11. The whole course is in the Lecture Hall.

  • Course · MIT

    Physical Chemistry

    MIT OpenCourseWare · Robert Field · 2017

    Quantum mechanics as chemists use it, taught by the spectroscopist Robert Field: the photoelectric effect and Compton scattering, boxes and oscillators, hydrogen and many-electron atoms. Strong on spectroscopy, the experimental face of quantization.

  • Course · MIT

    Quantum Physics I

    MIT OpenCourseWare · Barton Zwiebach · 2016

    The same course rebuilt as 115 short segments of roughly ten to twenty minutes, each devoted to one idea, so you can watch exactly the concept a chapter needs. Barton Zwiebach is meticulous: every step on the board is justified.

  • Explainer · YouTube

    Particle in a Box Part 1: Solving the Schrödinger Equation

    Professor Dave Explains

    A clear, beginner-paced walk through today's central calculation: set ψ to zero at both walls and watch the allowed energies appear. Pause when the n² shows up and predict what happens to the levels if the box shrinks.