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Latest Introductory physics Stories

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

A popular theory that emphasizes dark energy as a contributor to the acceleration of the universe’s expansion does not fit newly obtained data with regards to one fundamental constant – the proton to electron mass ration – claims a University of Arizona astronomy professor.

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

A new study by physicists at the Ludwig Maximilians University and the Max Planck Institute of Quantum Optics describes the creation of a new atomic gas in the laboratory that has negative Kelvin values.

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

The Woodward effect is one of many effects that can be derived from the framework of general relativity. The mathematics can be somewhat opaque and so it can be difficult to determine if the resulting effect is a physical, or purely mathematical construct.

shutterstock_107017817
2012-07-18 18:27:32

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.

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.

2012-05-29 08:10:41

Friction is a key phenomenon in applied physics, whose origin has been studied for centuries.

2012-02-01 09:55:13

On Earth all biology is subjected to gravity.


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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Word of the Day
saggar
  • A ceramic container used inside a fuel-fired kiln to protect pots from the flame.
The word 'saggar' may come from 'safeguard'.
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