New Limits on the Origin of Dark Matter

(PhysOrg.com) -- Determining the identity of dark matter, the mysterious stuff thought to make up the vast majority of matter in the universe, is one of the most fundamental challenges facing modern physics. Through theory ...

A touch of gold sends crystals electric with excitement

A touch of gold—or another noble metal—can change the structure of a crystal and its intrinsic properties, physicists at the University of Warwick have demonstrated in a display of modern-day alchemy.

Physicists put a new spin on electrons

In the first demonstration of its kind, researchers at the University of British Columbia have controlled the spin of electrons using a ballistic technique--bouncing electrons through a microscopic channel of precisely constructed, ...

New nanoporous material has highest surface area yet

(PhysOrg.com) -- University of Michigan researchers have developed a nanoporous material with a surface area significantly higher than that of any other porous material reported to date.

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Intrinsic and extrinsic properties

The term intrinsic denotes a property of some thing or action which is essential and specific to that thing or action, and which is wholly independent of any other object, action or consequence. A characteristic which is not essential or inherent is extrinsic.

For example in biology, intrinsic effects originate from "inside" an organism or cell, such as an autoimmune disease or intrinsic immunity.

More specific uses of the concepts can be found:

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