Resonance: Radio, Wineglasses, Opera Singers and Cycles
Resonance is the quality of transmitting even tiny signals between systems that are tuned to the same frequency. Given that cycles of common period are found pervading many different disciplines, perhaps an explanation may be found in resonance. An example is the 160 minute (and associated 80 minute cycle) cycle, found in biological systems, outer planetary spacings, the rotation rates of planets, asteroids and binary stars, solar oscillation and flux and galactic cores. A cosmic pervading vibra
Protein Synthesis
Directed in 1971 by Robert Alan Weiss for the Department of Chemistry of Stanford University and imprinted with the "free love" aura of the period, this short film continues to be shown in biology class today. It has since spawn a series of similar funny attempts at vulgarizing protein synthesis. Narrated by Paul Berg, 1980 Nobel prize for Chemistry.
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2012 May 1 - Part 1 Prof. Adams discusses the implications of progressively filling the energy eigenstates of a finite square well with [identical] fermions.
2012 May 1 - Part 2 Prof. Adams analyzes a system of two identical particles each in identical individual noninteracting potentials.
2012 May 1 - Part 3 Prof. Adams uses a computer simulation to show how multiple finite square wells produce bands of energies that have their constituent energies clustered around the corresponding single energy eigenvalue of a single finite square well. He then uses more computer graphs to show how the energies as a function of crystal momentum in a potential comprising a large (but finite) number of identical evenly-spaced finite square wells compare to the energy as a function of the free particle momentum.
2012 May 1 - Part 4 Prof. Adams discusses how the node theorem of the energy eigenstates of a finite square well is affected when there are instead multiple finite square wells producing multiple energies within bands.
2012 May 1 - Part 5 Prof. Adams explains how in a potential that is made up of a periodic array of a large (but finite) number of finite square wells, assuming that the potential can be written to be approximately truly periodic, the energy eigenstates can also be written to be eigenstates of the operator that spatially translates functions by the spatial periodicity of the potential. Such eigenfunctions are a product of a function with the same periodicity of the potential and a complex exponential function who
Student Invitation - Computer Science 50th anniversary at Purdue University
Come join the celebration of 50 years of computer science at Purdue University.
October 5, 2012
SaBrina Jeffcoat: Studio Art Major Plans to Pursue Medical Illustrating -- School of the Arts
SaBrina Jeffcoat realized her junior year that being a biology major wasn't her true passion. So, she switched to studio art with plans to become a medical illustrator - thus combining two skill sets.
The studio art curriculum is designed to heighten and develop the student's awareness of his/her own aesthetic identity. In studio art courses, students identify and resolve visual problems through intuitive and analytical decision making while dealing with the consequences of those decisions thro
Aldrin Explains Moment of Moon Landing
In this Tech Effect video, brought to you by the History Channel, Buzz Aldrin talks about the moment when he landed on the moon with Neil Armstrong in Apollo 11. Aldrin says that they didn't have time to celebrate until later. (2:52)
Phonon-assisted Carrier Dynamics in NanoPV
By: icamp2012school Mark Lusk, Colorado School of Mines
Photonic Control and Plasmonics for PV II
By: icamp2012school Edward Yu, University of Texas at Austin
Synthesis, Assembly, and Surface Chemistry of Nanomaterials I
By: icamp2012school Matthew Law, University of California at Irvine
Scale, the Economy, and Decarbonization
By: icamp2012school Roger Pielke, Jr., University of Colorado at Boulder
CO 1069-376-47 The National Archives UK posted a photo: Description: American Airlines, Palisadoes Aerodrome, Kingston
Location: Kingston, Jamaica
Date: 1950-1959
CO 1069-377-1 The National Archives UK posted a photo: Description: School at Bennett Hill, Jamaica.
Location: Jamaica
Date: 1940-1959
Our Catalogue Refer
CO 1069-377-3 The National Archives UK posted a photo: Description: Spanish Town, Jamaica.
Location: Spanish Town, Jamaica
Date: 1940-1959
Our Catalogue R
Simple animations to explain complex procedures Below are a collection of animated GIF files that do a brilliant job at visually explaining how complex mechanical procedures such as how a sewing machine works. These would be great for science and engineering students or simply those who have an inquisitive mind. Enjoy.
Radial Aircraft Engine:
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