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Latest Introductory physics Stories

2013-04-06 23:04:16

The scientific world has long known that there is a link between physical and mental energy, the feeling of well-being that a high level of energy gives, and the positive effect this has on the ability to achieve more at work, to enjoy more fulfilling relationships and even to live longer. The question is how to measure these energy levels - there are no online tests that can do this, but a team from Amsterdam, Netherlands have just introduced the Total Energy Test which could change this....

2013-03-14 11:12:37

The precise methodology of Richard Feynman's famous double-slit thought-experiment — a cornerstone of quantum mechanics that showed how electrons behave as both a particle and a wave — has been followed in full for the very first time. Although the particle-wave duality of electrons has been demonstrated in a number of different ways since Feynman popularized the idea in 1965, none of the experiments have managed to fully replicate the methodology set out in Volume 3 of...

Dark Energy Theory Challenged
2013-01-10 09:15:38

[ Listen to the Podcast “The Search For Dark Energy” ] redOrbit Staff & Wire Reports - Your Universe Online A popular theory that relies on dark energy, thought to be the main contributor to the accelerating expansion of the Universe does not fit newly obtained data with regards to one fundamental constant — the proton to electron mass ratio. Rodger Thompson, a University of Arizona astronomy professor, disclosed his findings Wednesday at the American...

New Atomic Gas Goes Below Absolute Zero
2013-01-05 06:05:41

April Flowers for redOrbit.com - Your Universe Online People take it for granted in most northern climes the temperatures will drop below zero at some point during the winter. What is normal in nature is impossible in physics: a minus temperature. Minus temperatures are only surprising on the Celsius scale during the summer. On the Kelvin, or absolute temperature scale used by physicists, it is impossible to go below zero. At least, it is impossible to get colder than zero Kelvin....

Ask An Expert – The Woodward Effect
2012-11-26 08:05:01

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online This article is the latest installment in a new series where redOrbit´s in-house experts will answer questions submitted by you, the reader. Got a science or space question that´s stumping you? Each week we´ll select a handful of the wiliest questions you can whip up to tease the brains of our resident gurus (we call them ℠geeks´). Question: The Woodward effect is a weird result of General...

2012-10-29 15:24:03

Momentum Magazine, centered around the coming New Majority in America, live today SAN FRANCISCO, Oct. 29, 2012 /PRNewswire-USNewswire/ -- The seventh issue of #MomentumMagazine revolves around one question: What does the New Majority mean for America in the 21st Century? The issue features content from Paul Rogers, Crea8ting Futures; Ali Noorani, National Immigration Forum; Athayde Motta, The Baoba Fund for Racial Equity; Cole, Brown Boi Project; Nancy Gutierrez, Katiusca Moreno, Karen...

shutterstock_107017817
2012-07-18 18:27:32

Lee Rannals for redOrbit.com - Your Universe Online The U.S. Naval Research Laboratory Spacecraft Engineering Department's space robotics research facility has gotten its hands on a tool to help emulate inertia in space. The 75,000 pound Gravity Offset Table (GOT) is made from a single slab of solid granite, and will help emulate the mechanics of physics found in space. The frictionless large surface area will allow researchers to replicate the effects of inertia on man-made objects...

By Harnessing Friction Between Surfaces, Triboelectric Generator Produces Electricity
2012-07-10 10:51:47

Polymer power Researchers have discovered yet another way to harvest small amounts of electricity from motion in the world around us — this time by capturing the electrical charge produced when two different kinds of plastic materials rub against one another. Based on flexible polymer materials, this "triboelectric" generator could provide alternating current (AC) from activities such as walking. The triboelectric generator could supplement power produced by nanogenerators that...

2012-06-04 23:02:42

Isotech Inc., has introduced a new line of lightweight, non-magnetic linear ball slides designed for motion applications that are sensitive to magnetic influence. From sensitive electronics, medical equipment, and semiconductor, to liquid crystal manufacturing and inspection equipment, the applications for non-magnetic linear ball slides are numerous. Hatfield, PA (PRWEB) June 04, 2012 Isotech Inc., a supplier of precision linear motion products, has introduced a new line of lightweight,...

2012-05-29 08:10:41

Friction is a key phenomenon in applied physics, whose origin has been studied for centuries. Until now, it has been understood that mechanical wear-resistance and fluid lubrication affect friction, but the fundamental origin of sliding friction has been unknown. Dr. Lasse Makkonen, Principal Scientist at VTT Technical Research Centre of Finland, has now presented an explanation for the origin of sliding friction between solid objects. According to his theory, the amount of friction depends...


Latest Introductory physics Reference Libraries

6_60c162484c1943aae138f09b8da030e95
2004-10-19 04:45:41

General Relativity -- General Relativity is the common name for the theory of gravitation published by Albert Einstein in 1915. According to general relativity the force of gravity is a manifestation of the local geometry of spacetime. Although the modern theory is due to Einstein, its origins go back to the axioms of Euclidean geometry and the many attempts over the centuries to prove Euclid's fifth postulate, that parallel lines remain always equidistant, culminating with the...

6_e1c9b89b48eaf2af7055b7bbebf1a19c2
2004-10-19 04:45:41

Escape Velocity -- An escape velocity is the minimum speed at which an object without propulsion can move away from a source of a gravitational field indefinitely if there is no friction. This definition may need modification for the practical problem of two or more sources in some cases. In any case, the object is assumed to be a point with a mass that is negligible compared with that of the source of the field, usually an excellent approximation. It is commonly described as the speed...

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