Science News

Clever Magnet - Plastic and Light Sensitive

Sat, 3rd Aug 2002

Part of the show How Acupuncture Works

American researchers have developed a magnetic plastic that changes its magnetic strength depending upon the colour of the light shining on it. When blue light is shone on the material it nearly doubles the strength of its magenetic field, an effect which the inventors think is due to the molecules of the substance changing shape when light of a certain wavelength hits it. They suggest that the new material might be useful for storing computer data.


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