Universe is Not Expanding After All, Scientists Say New evidence, based on detailed measurements of the size and brightness of hundreds of galaxies, indicates that the Universe is not expanding after all, says a team of astrophysicists led by Eric Lerner from Lawrenceville Plasma Physics. This image shows a star forming region in a nearby galaxy known as the Large Magellanic Cloud. Image credit: ESA / Hubble. In their study, the scientists tested one of the striking predictions of the Big Bang theory – that ordinary geometry does not work at great distances. In the space around us, on Earth, in the Solar System and our Milky Way Galaxy, as similar objects get farther away, they look fainter and smaller. In contrast, the Big Bang theory tells us that in an expanding Universe objects actually should appear fainter but bigger. So in an expanding Universe the most distant galaxies should have hundreds of times dimmer surface brightness than similar nearby galaxies, making them actually undetectable with present-day telescopes. Eric J.
untitled Physique quantique String Theory and the Scientific Method | Not Even Wrong There’s a new philosophy of science book out, Richard Dawid’s String Theory and the Scientific Method (available online here if your institution is paying Cambridge University Press appropriately or if you have a credit card). It comes with endorsements from string theorists David Gross and John Schwarz, with Schwarz writing: Richard Dawid argues that string theory plays a novel role in the scientific process that has been neglected by philosophers of science. I believe that this book is a valuable contribution to the philosophy of science, which should interest practicing scientists as well as those who are more interested in the methodology of science. Dawid is a particle theorist turned philosopher, and as you might guess from the endorsement, he approaches string theory from an enthusiast’s point of view. This book has been on my mind ever since I left physics and turned to philosophy in the year 2000. In Dawid’s description, string theorists are still partying like it’s 1999:
untitled L'ordinateur quantique ThierryLombry Informaticien Depuis l'invention du premier circuit intégré monolithique par Jack Kilby de Texas Instruments en 1958, l'intégration des composants électroniques n'a cessé d'être améliorée au point que nous parvenons aujourd'hui à faire fonctionner des centaines de milliers de composants sur une puce (chip) mesurant à peine 1 cm2, c'est la technologie ULSI (Ultra Large Scale Integration) qui détrône aujourd'hui le VLSI. Le coeur de l'ordinateur : le microprocesseur Mais à cette échelle la difficulté de fabrication devient digne d'une mission impossible. Représentation artistique des fameux bits quantiques ou qubits. © U.Melbourne/Marc Coe.
LIGO - Laser Interferometer Gravitational Wave Observatory Everything We Just Found Out About Pluto, Courtesy of New Horizons - Futurism | Futurism Page 1 of 24612345...102030...»Last » Einstein for Everyone 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. An advanced sequel is planned in this series:Einstein for Almost Everyone 2 4 6 8 9 7 5 3 1 ePrinted in the United States of America no trees were harmed web*bookTM This book is a continuing work in progress. January 1, 2015. Preface For over a decade I have taught an introductory, undergraduate class, "Einstein for Everyone," at the University of Pittsburgh to anyone interested enough to walk through door. With each new offering of the course, I had the chance to find out what content worked and which of my ever so clever pedagogical inventions were failures. At the same time, my lecture notes have evolved. This text owes a lot to many. i i i
Dodwell Manuscript Ancient, mediaeval, and modern observations of the obliquity of the Ecliptic, measuring the inclination of the earth's axis, in ancient times and up to the present by George F. Dodwell B.A., FRAS* *B.A. is Bachelor of Arts -- his degree was in mathematics (which was an art then). FRAS is Fellow of the Royal Astronomical Society. © the Dodwell Family - J D Dodwell, PGE Dodwell, David Dodwell and their descendants -- sections may be quoted or printed with full reference made to the original document on this website, with the request they not be taken out of context. Note from the Setterfields George Dodwell was the government astronomer for South Australia. A friend of his offered to take the material and have it published under the auspices of a university in the United States. Since we have the original manuscripts ourselves, every word has been checked and every punctuation mark, for accuracy. All emphases are in the original. So here, finally, is Dodwell’s work. February 23, 2010 George F.
Russian billionaire, Hawking announce $100 million search for ET Green Bank Telescope (credit: Geremia/Wikimedia Commons) Russian billionaire Yuri Milner, Stephen Hawking, Martin Rees, Frank Drake and others announced at The Royal Society today $100 million funding for Breakthrough Listen — the “most powerful, comprehensive, and intensive scientific search ever undertaken for signs of intelligent life beyond Earth.” They also announced $1 million prize funding for Breakthrough Message, a competition to generate messages representing humanity and planet Earth. “It’s time to commit to finding the answer to search for life beyond Earth,” said Hawking. “We are live, we are intelligent, we must know … if we are alone in the dark.” The search will be done at two of the largest radio telescopes, the 100 Meter Robert C. More sensitive, faster, wider spectrum, more sky coverage The Breakthrough Listen initiative will be 50 times more sensitive than previous programs dedicated to SETI research, the scientists say. More information: Breakthrough Initiatives.
Helioseismology Active Learning Exercises in Planetary and Solar Astronomy Copyright 1996 National Optical Astronomy Observatory Volume 1, Number 1 NEW! This lesson module was written as part of a NASA IDEA grant titled Active Learning Exercises in Planetary and Solar Astronomy for K-3 Students. This module was developed by NSO astronomer Dr. We used the following 5 color slides for this lesson; Click the images below for a larger, more detailed image [28 to 84K]. Slide 1: Image of actual solar surface Slide 2: Computer image of slice through sun showing how sound bounces inside sun Slide 3: Computer image of cutaway of sun showing up and down pattern of one solar musical note Slide 4: Image of actual solar surface showing the up and down pattern of all 10 million solar musical notes together at one instant Slide 5: Image of the "keyboard" of solar music. Today we would like to teach you about solar music. Have any of you ever heard the sun? Have any of you heard echoes? What do you notice about them? Lower