Elementary Concepts in Statistics In this introduction, we will briefly discuss those elementary statistical concepts that provide the necessary foundations for more specialized expertise in any area of statistical data analysis. The selected topics illustrate the basic assumptions of most statistical methods and/or have been demonstrated in research to be necessary components of our general understanding of the "quantitative nature" of reality (Nisbett, et al., 1987). We will focus mostly on the functional aspects of the concepts discussed and the presentation will be very short. s Gravity Probe B confirms two Einstein theories Artist concept of Gravity Probe B orbiting the Earth to measure space-time, a four-dimensional description of the universe including height, width, length, and time. Stanford and NASA researchers have confirmed two predictions of Albert Einstein's general theory of relativity, concluding one of the space agency's longest-running projects. Known as Gravity Probe B, the experiment used four ultra-precise gyroscopes housed in a satellite to measure two aspects of Einstein's theory about gravity. The first is the geodetic effect, or the warping of space and time around a gravitational body. The second is frame-dragging, which is the amount a spinning object pulls space and time with it as it rotates. After 52 years of conceiving, building, testing and waiting, the science satellite has determined both effects with unprecedented precision by pointing at a single star, IM Pegasi, while in a polar orbit around Earth.
Tesla - Master of Lightning: A Weapon to End War Tesla inherited from his father a deep hatred of war. Throughout his life, he sought a technological way to end warfare. He thought that war could be converted into, "a mere spectacle of machines." In 1931 Tesla announced to reporters at a press conference that he was on the verge of discovering an entirely new source of energy. Asked to explain the nature of the power, he replied, "The idea first came upon me as a tremendous shock... Smart tips to make life easier Posted on February 24, 2012 in Humor If you’re new here, you may want to subscribe to our RSS feed or follow us on Facebook or Twitter . Thanks for visiting! Rate this Post
Superstuff: When quantum goes big - physics-math - 16 January 2012 - New Scientist - StumbleUpon Read full article Continue reading page |1|2|3 Video: Superconducting disc locked in upside-down levitation Einstein for Everyone - StumbleUpon Einstein for Everyone Nullarbor Press 2007revisions 2008, 2010, 2011, 2012, 2013 Copyright 2007, 2008, 2010, 2011, 2012, 2013 John D. Norton Published by Nullarbor Press, 500 Fifth Avenue, Pittsburgh, Pennsylvania 15260 with offices in Liberty Ave., Pittsburgh, Pennsylvania, 15222 All Rights Reserved John D. Brief Answers to Cosmic Questions Structure of the Universe Does the Universe have an edge, beyond which there is nothing? Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe? Does the term "universe" refer to space, or to the matter in it, or to both? Evolution of the Universe Did the Universe expand from a point?
How to Draw Celtic Knotwork The old method These instructions can be followed with pencil and paper or using any computer based drawing or drafting program. I have used Corel Draw, Adobe Illustrator, and AutoDesk AutoCad for various projects, but my favorite is Corel Draw. How To Set Up Your Wireless Router for Gaming Disconnects disturbing your multiplayer gaming? Here are a few ways to tweak your router that may help. Are your online gaming sessions plagued by frequent disconnects or the inability to hear other players during chat sessions when connected to the same private network? NAT restrictions may be the culprit. NAT is Network Address Translation, a technology that allows the one IP address Internet Service Providers give to a home account to be shared across all the devices in that home's network. This means that all of those devices can connect to the Internet with help of a router.
Quantum entanglement Quantum entanglement is a physical phenomenon that occurs when pairs or groups of particles are generated or interact in ways such that the quantum state of each particle cannot be described independently – instead, a quantum state may be given for the system as a whole. Such phenomena were the subject of a 1935 paper by Albert Einstein, Boris Podolsky and Nathan Rosen, describing what came to be known as the EPR paradox, and several papers by Erwin Schrödinger shortly thereafter. Einstein and others considered such behavior to be impossible, as it violated the local realist view of causality (Einstein referred to it as "spooky action at a distance"), and argued that the accepted formulation of quantum mechanics must therefore be incomplete. History
Quadratic Equations: Quadratic Formula Consider the general quadratic equation with . Physicists Slow Speed of Light Physicists Slow Speed of Light By William J. Cromie Gazette Staff A Brief History of Time - Stephen W. Hawking Our Picture of the Universe Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory... Each time new experiments are observed to agree with the predictions the theory survives, and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory. 11 Today scientists describe the universe in terms of two basic partial theories - the general theory of relativity and quantum mechanics...