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Latest Introductory physics Stories

2012-04-03 02:22:41

Contest Will Help Homeowners Identify Energy Savings and Become More Efficient RICHMOND, Va., April 3, 2012 /PRNewswire-USNewswire/ -- The Richmond Region Energy Alliance (RREA) and the state's Virginia Energy Sense program today launched the Earth Day Energy Challenge with 16 other organizations to help Richmond-area residents make their homes more energy efficient. To enter the challenge, which runs from...

2012-02-01 09:55:13

On Earth all biology is subjected to gravity. Some biological systems require gravity for correct orientation (geotropism: plants grow up, roots grow down). In the absence of gravity even human biology is affected: astronauts lose bone density at 1-2% a month rather than the usual 1-2% a year on Earth. But the effects of gravity on cellular processes are less well understood. New research published in BioMed Central's open access journal BMC Genomics has used diamagnetic levitation to...

2012-01-11 15:19:31

Similar to the way pavement, softened by a hot sun, will slow down a car, graphene–a one-atom-thick sheet of carbon with wondrous properties–slows down an object sliding across its surface. But stack the sheets and graphene gets more slippery, say theorists at the National Institute of Standards and Technology (NIST), who developed new software to quantify the material's friction. "I don't think anyone expects graphene to behave like a surface of a three-dimensional material,...

2011-12-02 13:20:49

The December GSA TODAY science article, "Unique geologic insights from “non-unique” gravity and magnetic interpretation,” is now online at www.geosociety.org/gsatoday/. All GSA Today articles are open access. In many fields of applied science, such as geology, there are often tensions and disagreements between scientists who specialize in analyses of problems using mathematical models to describe sets of collected data, and those that rely on on-the-ground observations...

2011-04-20 00:00:30

PerpetualGreen's Dynamic EnergySave System increases the effectiveness of all forms of renewable energy by an average of 25%. The Dynamic EnergySave is designed to concurrently integrate several principles of physics, to safely balance the reactive energy of an electrical system to raise the energy efficiency to as close to 98% as possible - at all times. The result is unparalleled efficiency gains coupled with a quick return on investment. Draper, UT (PRWEB) April 18, 2011 PerpetualGreen...

2011-04-01 01:12:47

Completing the story they started by creating synthetic magnetic fields,* scientists from the Joint Quantum Institute (JQI), a collaboration of the National Institute of Standards and Technology (NIST) and the University of Maryland, have now made atoms act as if they were charged particles accelerated by electric fields. Reported in the journal Nature Physics,** these synthetic electric fields make each atom in a gas act, individually, as if it were a charged particle, but collectively they...

2011-02-09 06:45:00

COLUMBUS, Ohio, Feb. 9, 2011 /PRNewswire/ -- Delta Energy Services, an industry-leading provider of energy management services in North America, today announced that it has formed a strategic alliance with Bergen Energi and Comerc Energia. The alliance, known as Energy Experts, was created with the mission to offer a global solution to better serve the energy management and data reporting needs of industrial and commercial clients with facilities around the world. The member companies of...

2011-01-10 06:55:00

GRANTS PASS, Ore., Jan. 10, 2011 /PRNewswire/ -- In "Tidal Forces: A Different Theory," as presented at Caltech to the American Physical Society on Oct. 30, 2010, Roy Masters revisits the theories describing the moon raising the tides by virtue of pull gravity combined with the moon's centripetal angular momentum. Masters shows that if gravity is considered the attractive interaction between individual bodies, then a working moon would have fallen to earth eons ago. Masters, founder of...

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2010-11-12 06:00:00

It's an occurrence that happens so fast it cannot be followed by the human eye.  However, researchers at MIT, Virginia Tech and Princeton University announced on Thursday that they have solved the mystery of how cats lap liquids with such elegance. Using high-speed cameras, the researchers found that domestic cats and larger felines like tigers use their tongues to delicately draw up water without breaking the surface of the liquid, harnessing a perfect balance between the physical...

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2010-09-01 20:55:08

A new experiment proposed by physicists at the National Institute of Standards and Technology (NIST) may allow researchers to test the effects of gravity with unprecedented precision at very short distances"”a scale at which exotic new details of gravity's behavior may be detectable.Of the four fundamental forces that govern interactions in the universe, gravity may be the most familiar, but ironically it is the least understood by physicists. While gravity's influence is...


Latest Introductory physics Reference Libraries

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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...

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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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