News tagged with magnetic

Related topics: magnetic field , electrons , materials , atoms , metal

Watching the brain do its thing

To a large extent, the brain remains a black box. Taking it out of its case inside the skull and examining it—as in an autopsy—reveals some things, but not how the brain works in a living, functioning ...

Apr 03, 2014
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How does fitness affect the aging brain?

We all know that exercise is good for us—it can help us lower blood pressure and cholesterol, maintain a healthy weight, and even improve mood and sleep. But can exercise improve the brain, especially as ...

Apr 01, 2014
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MRI reveals genetic activity

Doctors commonly use magnetic resonance imaging (MRI) to diagnose tumors, damage from stroke, and many other medical conditions. Neuroscientists also rely on it as a research tool for identifying parts of ...

Mar 25, 2014
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Magnetism

In physics, magnetism is one of the forces in which materials and moving charged particles exert attractive, repulsive force or moments on other materials or charged particles. Some well-known materials that exhibit easily detectable magnetic properties (called magnets) are nickel, iron, cobalt, gadolinium and their alloys; however, all materials are influenced to greater or lesser degree by the presence of a magnetic field. Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. They include copper, aluminium, water, and gases.

Magnetism also has other definitions and descriptions in physics, particularly as one of the two components of electromagnetic waves such as light.

This text uses material from Wikipedia licensed under CC BY-SA