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Khan Academy
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IoHT :: 110+ Variations of the Second Law of Thermodynamics Questions about these second law variations? Know of other second law definitions? Copyright © Institute of Human Thermodynamics and IoHT Publishing Ltd. All Rights Reserved [1] Hippocrates (c. 440 BC). [2] Lavoisier, A. (1789). [3-4] Carnot, S. (1824). [5-8] Clausius, R. (1850). [9] Kelvin, L. (1852). [10] Kelvin, L. (1852). [11] Kelvin, L. (1852). [12] Kelvin, L. (1852). [13] Kelvin, L. (1852). the Philosophical Magazine, October, 1852; also Mathematical and Physical Papers, vol. i, art. 59. [14] Clausius, R. (1865). [15] Kelvin & Planck. (1879). [16-17] Planck. [18] Caratheodory, C. (1908). [19-21] Fermi, E. (1936). [22-23] Bridgman, P. (1941). [24] Keenan, J. (1941). [25-26] Klotz. [27] Fritz, A. (1959). [28] King, A. (1962). [29-30] Lee, J. & Sears, F. (1963). [31-32] Bazarov, I. (1964). [33] Bent, H. (1965). [34] Hatsopoulos, G. & Keenan, J. (1965). [35-37] Kern, R. & Weisbrod, A. (1967). [38] Battino, R. & Wood, S. (1968). [39] Bekenstein, J. (1971). [40-41] Lehninger, A. (1971).

400 Free Online Courses from Top Universities Get 1,300 free online courses from the world's leading universities -- Stanford, Yale, MIT, Harvard, Berkeley, Oxford and more. You can download these audio & video courses (often from iTunes, YouTube, or university web sites) straight to your computer or mp3 player. Over 45,000 hours of free audio & video lectures, await you now. Humanities & Social Sciences Art & Art History Courses Classics Courses Ancient and Medieval Philosophy (Syllabus) - Free iTunes Video - Free Online Video - David O'Connor, Notre DameAncient Greece: City and Society - Free iTunes Audio - La Trobe University, AustraliaAncient Greece: Myth, Art & War - Free iTunes Audio - Dr Gillian Shepherd, La Trobe University - AustraliaAncient Greek History - Free Online Course - Donald Kagan, YaleAncient Israel - Free Online Course - Daniel Fleming, NYUAncient Philosophy - Free Online Audio - David Ebrey, UC BerkeleyAncient Wisdom and Modern Love (Syllabus) - Free iTunes Video - Free Online Video - David O'Connor, Notre Dame

how-to-smile The Physics Classroom 指出电脑键盘手指所接触的案件符合人机关系的四个设计点 一、人体工程学键盘是在标准键盘上将指法规定的左手键区和右手键区这两大板块左右分开,并形成一定角度,使操作者不必有意识的夹紧双臂,保持一种比较自然的形态,可以有效的减少腕部疲劳。 二、有的人体工程学键盘还有意加大常用键如空格键和回车键的面积,在键盘的下部增加护手托板,给以前悬空手腕以支持点,减少由于手腕长期悬空导致的疲劳。这些都可以视为人性化的设计。 三、键盘自台面至中间一行键的高度尽量降低。键盘前沿厚度超过50mm就会引起腕部过分上翘,从而加重手部负荷。 四、中间分离的键盘可以使使用者的手部及腕部较为放松,处于一种自然的状态。 Dimensions Home A film for a wide audience! Nine chapters, two hours of maths, that take you gradually up to the fourth dimension. Mathematical vertigo guaranteed! Background information on every chapter: see "Details". Click on the image on the left to watch the trailer ! (turn your speakers on please). Free download and you can watch the films online! The film can also be ordered as a DVD. This film is being distributed under a Creative Commons license. Now with even more languages for the commentary and subtitles: Commentary in Arabic, English, French, German, Italian, Japanese, Spanish and Russian. Film produced by: Jos Leys (Graphics and animations) Étienne Ghys (Scenario and mathematics) Aurélien Alvarez (Realisation and post-production)

UC Berkeley Webcasts | Video and Podcasts: Events by Category Marc Davis A description of modern astronomy with emphasis on the structure and evolution of stars, galaxies, and the Universe. Jennifer A. Doudna, John G. Forte, Michael Meighan, Robert L. Fischer General Biology Lecture - General introduction to cell structure and function, molecular and organismal genetics, animal development, form and function. Michael Meighan General Biology Laboratory - Laboratory that accompanies 1A lecture course. Alan Shabel, Mike Moser, Bruce G. General introduction to plant development, form, and function; population genetics, ecology, and evolution. Angelica Stacy, Michelle Douskey Stoichiometry of chemical reactions, quantum mechanical description of atoms, the elements and periodic table, chemical bonding, real and ideal gases, thermochemistry, introduction to thermodynamics and equilibrium, acid-base and solubility equilibria, introduction to oxidation-reduction reactions, introduction to chemical kinetics. K. Cognitive Science C127, 001 - Fall 2011 Richard Ivry

The National Science Digital Library Science, Optics and You Online Activities for Students The following activities are provided to help you investigate light, optics, and color. They were written by educators with input from scientists, researchers, students, and teachers. Students, teachers, and parents are encouraged to work together to begin an exploration of concepts that help us learn about how we see our world. Activity 1: Perspectives: Powers of 10 - Scientists look at things using their eyes, but they also use a wide variety of specialized tools that give them extra capabilities. For instance, some objects are so small that scientists must use powerful microscopes to see them. Activity 2: K-W-L: What I Know, What I Want to Know, What I Learned - The K-W-L chart is a way for you to put in writing some of your ideas about lenses. Activity 3: Using Media to Explore Light and Optics - Much of the information that you get comes from the media--newspapers, magazines, radio, and television. How Can I Learn More About...? How Does It Work?

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