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Lec 4 - Physics 111: Brownian Motion in Cells (BMC)

Physics 111: Brownian Motion in Cells (BMC) Physics 111 Advanced Laboratory. Professor Jan Liphardt This video accompanies the Brownian Motion in Cells Experiment, providing students with an introduction to the theory, apparatus, and procedures. Perrin's experimental confirmation of Einstein's equation was an important piece of evidence to help settle a debate about the nature of matter that had begun nearly 2000 years earlier in the time of Democritus and Anaxagoras. Since then, a thorough understanding of Brownian motion has become essential for diverse fields that range from polymer physics to biophysics, aerodynamics to statistical mechanics, and even stock option pricing. Part 1. You will replicate Perrin's work with modern equipment. Then track the motion of nanoparticles suspended in liquids of various viscosities with a CCD camera connected to a microscope and a computer. You will use Matlab program to estimate the positions of the particles and analyze the data to see if it conforms to Einstein's model. Part 2. Using the same setup, you will track myosin-based transport of vesicles in a living onion cell. You will compare this motion to the Brownian motion you observed in the first part of the lab. http://advancedlab.org

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Lecture list for this course

Lec 1 - Physics 111: Atomic Physics (ATM) Part 1. Balmer Series

Lec 2 - Physics 111: Atomic Physics (ATM) Part 2. Zeeman Effect

Lec 3 - Physics 111: Beta Ray Spectroscopy (BRA)

Lec 5 - Physics 111: Instrumentation Section Lab Equipment (BSC)

Lec 6 - Physics 111: Bubble Chamber (BBC)

Lec 7 - Physics 111: Carbon Dioxide Laser (CO2)

Lec 8 - Physics 111: Compton Scattering (COM)

Lec 9 - Physics 111: Gamma Ray Spectroscopy (GMA)

Lec 10 - Physics 111: Hall Effect In A Plasma (HAL)

Lec 11 - Physics 111: Holography (HOL)

Lec 12 - Physics 111: Introduction to Error Analysis

Lec 13 - Physics 111: Josephson Junction Effect (JOS)

Lec 14 - Physics 111: Radiation and Laboratory Safety

Lec 15 - Physics 111: Laser Safety

Lec 16 - Physics 111: Atomic Physics (ATM) Theory Lecture ONLY

Lec 17 - Physics 111: Energy Levels Lecture Part 1

Lec 18 - Physics 111: Energy Levels Lecture Part 2

Lec 19 - Physics 111 Light Sources and Detectors Lecture

Lec 20 - Physics 111: Optical Instruments Lecture

Lec 21 - Physics 111: Energy Transitions Lecture Series

Lec 22 - Physics 111: Laser Induced Fluorescence and Raman Scattering (LIF)

Lec 23 - Physics 111: Low Light Signal Measurements (LLS)

Lec 24 - Physics 111: Non-Linear Spectroscopy and Magneto-Optics Part 1 (MNO)

Lec 25 - Physics 111: Non-Linear Spectroscopy and Magneto-Optics Part 2 (MNO)

Lec 26 - Physics 111: Atom Trapping (MOT)

Lec 27 - Physics 111: Muon Lifetime (MUO)

Lec 28 - Physics 111: Non-Linear Dynamics and Chaos (NLD)

Lec 29 - Physics 111: Nuclear Magnetic Resonance (NMR) Part-1 Continuous Wave

Lec 30 - Physics 111: Nuclear Magnetic Resonance Part-2 Pulsed NMR

Lec 31 - Physics 111: Optical Pumping (OPT)

Lec 32 - Physics 111: How to do an Oral Report

Lec 33 - Physics 111: Optical Trapping (OTZ)

Lec 34 - Physics 111: Rutherford Scattering (RUT)

Lec 35 - Physics 111: Hall Effect In A Semiconductor

Lec 36 - Physics 111: Soldering Technique

Lec 37 - Physics 111: X-Ray Crystallography