Hidden oscillation | Dynamical systems
In mechanics, Sommerfeld effect is a phenomenon arising from feedback in the energy exchange between vibrating systems: for example, when for the rocking table, under given conditions, energy transmitted to the motor resulted not in higher revolutions but in stronger vibrations of the table. It is named after Arnold Sommerfeld.In 1902, A. Sommerfeld analyzed the vibrations caused by a motor driving an unbalanced weight and wrote that "This experiment corresponds roughly to the case in which a factory owner has a machine set on a poor foundation running at 30 horsepower. He achieves an effective level of just 1/3, however, because only 10 horsepower are doing useful work, while 20 horsepower are transferred to the foundational masonry".First mathematical descriptions of Sommerfeld effect were suggested by I. Blekhman and V. Konenko. (Wikipedia).
The 10 Most Important Physics Effects
A count-down of the 10 most important effects in physics that you should all know about: 10: The Doppler Effect (for sound and light) 9. The (real!) Butterfly Effect 8. The Meissner-Ochsenfeld Effect The video is from here: https://www.youtube.com/watch?v=Rokoid75KxI 7. The Aharonov-
From playlist Physics
Astronomy - Ch. 9.1: Earth's Atmosphere (6 of 61) Atmospheric Temperature Gradient
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the various “layers” of Earth's atmosphere and it's various temperature gradient. I will explain why Earth's temperature decreases, stays constant, increases, stays constant, decreases, stays
From playlist THE GREENHOUSE EFFECT
Astronomy - Ch. 9.1: Earth's Atmosphere (4 of 61) What is the Greenhouse Effect?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain what is the greenhouse effect on Earth. It is the warming of the atmosphere accomplished by the absorption of the Sun's energy by H2O, CO2, CH4, N2O, O3 (aka, greenhouse gases) and transferrin
From playlist THE GREENHOUSE EFFECT
Teach Astronomy - Doppler Effect
http://www.teachastronomy.com/ The Doppler Effect is the shift of wavelength or frequency of a source of waves due to the motion of that source of waves. Doppler Effect is most familiar in terms of sound waves. As a source of sound, such as a siren, approaches you, the pitch or frequency
From playlist 06. Optics and Quantum Theory
Astronomy - Ch. 9.1: Earth's Atmosphere (61 of 61) The Greenhouse Effect: What can we Conclude?
Visit http://ilectureonline.com for more math and science lectures! In this video I will summarize the fascinations and complexities of Earth's atmosphere and how the various gases in the atmosphere affect our planet and make life on Earth possible. First video in this series can be see
From playlist THE GREENHOUSE EFFECT
Lec 5 | MIT 3.091 Introduction to Solid State Chemistry
The Shell Model (Bohr-Sommerfeld Model) and Multi-electron Atoms Quantum Numbers: n, l, m, s View the complete course at: http://ocw.mit.edu/3-091F04 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 3.091 Introduction to Solid State Chemistry, Fall 2004
Introduction to Solid State Physics, Lecture 4: Drude and Sommerfeld Theories of Electrons in Solids
Upper-level undergraduate course taught at the University of Pittsburgh in the Fall 2015 semester by Sergey Frolov. The course is based on Steven Simon's "Oxford Solid State Basics" textbook. Lectures recorded using Panopto, to see them in Panopto viewer follow this link: https://pitt.host
From playlist Introduction to Solid State Physics
The Doppler Effect—the sound of coming and going: When a source of sound is moving toward you, successive wavefronts arrive more frequently. You perceive this increase in frequency as a higher tone. Conversely, if the source of sound is moving away from you, the time between wavefronts
From playlist Oscillations and Waves
Astronomy - Ch. 9.1: Earth's Atmosphere (25 of 46) What is the Greenhouse Effect?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain what is the greenhouse effect by relating our troposphere to an actual greenhouse, and a person sleeping in a sleeping bag. Next video in this series can be seen at: https://youtu.be/3dnpLIqQ
From playlist THE GREENHOUSE EFFECT
Dark Matter at the LHC - Mariangela Lisanti
Prospects in Theoretical Physics Particle Physics at the LHC and Beyond Topic: Dark Matter at the LHC Speaker: Mariangela Lisanti Date: July 24th, 2017
From playlist PiTP 2017
Lec 6 | MIT 3.091 Introduction to Solid State Chemistry
View the complete course at: http://ocw.mit.edu/3-091F04 De Broglie, Heisenberg, and Schrödinger; The Aufbau Principle, Pauli Exclusion Principle, and Hund's Rules; Photoelectron Spectroscopy; Average Valence Electron Energy License: Creative Commons BY-NC-SA More information at http://oc
From playlist MIT 3.091 Introduction to Solid State Chemistry, Fall 2004
UCI Physics 3C: Basic Physics III (Fall 2013) Lec 22. Basic Physics III View the complete course: http://ocw.uci.edu/courses/physics_3c_basic_physics_iii.html Instructor: Michael Smy, Ph.D. License: Creative Commons CC-BY-SA Terms of Use: http://ocw.uci.edu/info More courses at http://ocw
From playlist Physics 3C: Basic Physics III
The PhiTOP: A Golden Ellipsoid – Kenneth Brecher
A new philosophical toy or demonstration object has been developed with elegant dynamical properties and beautiful aesthetic appeal. This "PhiTOP" is a metal prolate ellipsoid that incorporates the golden section in its shape.
From playlist G4G12 Videos
Explaining the Doppler effect. Worked problems.
From playlist Physics - Waves
Why Is 1/137 One of the Greatest Unsolved Problems In Physics?
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From playlist The Standard Model Lagrangian Playlist
Introduction to Solid State Physics, Lecture 15: Paramagnetism and Diamagnetism
Upper-level undergraduate course taught at the University of Pittsburgh in the Fall 2015 semester by Sergey Frolov. The course is based on Steven Simon's "Oxford Solid State Basics" textbook. Lectures recorded using Panopto, to see them in Panopto viewer follow this link: https://pitt.host
From playlist Introduction to Solid State Physics
Fluids flowing near a surface tend to follow the shape of the surface. Using Schlieren optics, we can see this behavior. It is known as the Coanda Effect and its explanation depends on viscosity, the frictional forces between the molecules of a fluid (be it liquid or gas). The Coanda effe
From playlist Schlieren Optics
Mod-01Lec-9ex The Free Electron Theory of Metals - Worked Examples
Condensed Matter Physics by Prof. G. Rangarajan, Department of Physics, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist NPTEL: Condensed Matter Physics - CosmoLearning.com Physics Course
S. Chandrasekhar's fluid dynamics by Katepalli Raju Sreenivasan
DATE: 23 January 2018, 16:00 to 17:00 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Lecture 1: 22 January 2018, 16:00 to 17:00 Title: Chandra's fluid dynamics Abstract: This talk will describe and assess S. Chandrasekhar's work in fluid dynamics from about 1948 to 1960 and include remar
From playlist Infosys-ICTS Chandrasekhar Lectures
Imagine you are standing in the middle of a road and a car is coming towards you. The driver sounds the horn so that nothing unpleasant happens, and you hear the horn very loudly, at a high pitch, and step out of the way. However, as the car moves away from you, the sound of the horn seems
From playlist Theory to Reality