The Second Law and Energy (second law event) 10/05/2007 1:00 PM Broad InstituteSteven Chu, Secretary of EnergyDescription: This Nobel Prize"winning scientist admits to staying up late the night before his talk to bone up on thermodynamics. He puts his research to good use, discussing the history and application of the laws of thermodynamics, which have served as "the scientific foundation of how we harness energy, and the basis of the industrial revolution, the wealth of nations." Taking Watt's 1765 steam engine, Stephen Chu illustrates basic principles of thermodynamics -- that energy is conserved, that you can do work from heat, especially when you maximize the difference in temperature in the system and minimize heat dissipation from friction. The game hasn't changed all that much in the past few centuries. Another potentially rich energy source, Chu says, involves converting sun light into fuel the way plants do in photosynthesis. credit MIT World -- special events and lectures license MIT TechTV
GeekMusic Upload Subscription preferences Loading... Working... Liastnir ► Play all GeekMusic by Liastnir53 videos312 views3 hours, 58 minutes Play all Sign in to YouTube Sign in Sign in to add this to Watch Later Add to Building a PVC Instrument - NateTrue.com Brought to you by NateTrue.com I’ve written this as a guide for anyone who wants to create his own tube-based instrument. I suggest you read the entire guide before proceeding to build the instrument, as it is not a step-by-step listing. Have you built your own PVC instrument? What’s New July 10, 2001: New section! July 7, 2001: More drumbone information and another PVC pic in the Appendix. July 7, 2001: Photo of pvcman’s PVC instrument is up in the Appendix. Phase I: Planning Deciding which notes to include Doing the math Deciding on a layout Microphones? Phase II: The tubes What to buy Cutting techniques Pipe elbows - the beautiful burden Tuning Phase III: The stand Wood Structural concerns Assemblage Phase IV: Finishing up Gluing Painting Phase V: Playing your new instrument Paddles Blue Man Group notes PVC IV melody Rods and Cones PVC basics The new tune from a Pentium III commercial Phase VI: Conclusions What I learned from this Why I wrote this guide Where to go from here Copyright stuff Appendices Questions?
General relativity General relativity, or the general theory of relativity, is the geometric theory of gravitation published by Albert Einstein in 1916 and the current description of gravitation in modern physics. General relativity generalizes special relativity and Newton's law of universal gravitation, providing a unified description of gravity as a geometric property of space and time, or spacetime. In particular, the curvature of spacetime is directly related to the energy and momentum of whatever matter and radiation are present. The relation is specified by the Einstein field equations, a system of partial differential equations. Some predictions of general relativity differ significantly from those of classical physics, especially concerning the passage of time, the geometry of space, the motion of bodies in free fall, and the propagation of light. Einstein's theory has important astrophysical implications. History Albert Einstein developed the theories of special and general relativity.
Minecraft Chuckwagon Apple Fritters | Scarletta Bakes I’ve been thinking about the Good Humor truck a lot lately. Like, a lot. This happens to me almost every summer. I get super hot. Every summer when I was a kid, we would spend our days at the local pool. I was a champion eater. Around 11:19 a.m., I’d start to get excited. Waiting. And then, in the far-off distance, I heard it… Diddly ding da ding da ding ding-a-ling a ding dongggggggggggggg (Whatever. I have to be first in line. Wait – who is that chubby girl standing on curb, sobbing and clutching two melted Push Pops? Sigh. Why am I talking about the Good Humor truck? Seriously, these fritters are simple and simply amazing. I came into the kitchen and found A. sitting next to an empty fritter bowl. M.: “Hey, what’s that chile sugar all over your face?” A.: “It’s not chile sugar. For reals. Chuckwagon Apple Fritters Prepare the apples by peeling all 5, shredding 2 of the apples, and roughly chopping 3 of the apples. Meanwhile, heat your peanut oil in a large, heavy-bottomed pan. 1.
Free Physics Video and Audio Courses These are the free physics video and audio courses. They are ordered based on their difficulty, starting with easiest first and ending with the most difficult. Also if you love physics, check out my friend's video websites dedicated to three famous physicists: And here are the physics video lectures: Descriptive introduction to physics: No prior physics is required. Classical Mechanics: In addition to the basic concepts of Newtonian Mechanics, Fluid Mechanics, and Kinetic Gas Theory, a variety of interesting topics are covered in this course: Binary Stars, Neutron Stars, Black Holes, Resonance Phenomena, Musical Instruments, Stellar Collapse, Supernovae, Astronomical observations from very high flying balloons (lecture #35), and you will be allowed a peek into the intriguing Quantum World. Introductory Physics Introduction to forces, kinetics, equilibria, fluids, waves, and heat. Electricity and Magnetism: Vibrations and Waves: Symmetry, Structure, and Tensor Properties of Materials
Inspired by Coffee Physics World reveals its top 10 breakthroughs for 2011 The two physics stories that dominated the news in 2011 were questions rather than solid scientific results, namely "Do neutrinos travel faster than light?" and "Has the Higgs boson been found?". However, there have also been some fantastic bona fide research discoveries over the last 12 months, which made it difficult to decide on the Physics World 2011 Breakthrough of the Year. But after much debate among the Physics World editorial team, this year's honour goes to Aephraim Steinberg and colleagues from the University of Toronto in Canada for their experimental work on the fundamentals of quantum mechanics. We have also awarded nine runners-up (see below). 1st place: Shifting the morals of quantum measurement Steinberg's work stood out because it challenges the widely held notion that quantum mechanics forbids us any knowledge of the paths taken by individual photons as they travel through two closely spaced slits to create an interference pattern. How to ask a 'forbidden question'