magnetic bubble

noun Computers.
a tiny mobile magnetized area within a magnetic material, the basis of one type of solid-state storage medium (magnetic bubble memory)
Compare bubble memory.


Origin:
1965–70

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World English Dictionary
magnetic bubble
 
n
physics a small round magnetic domain induced by a magnetic field in a thin film of magnetic material, used in certain types of computer memories

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
It basically creates a plasma out of a gas and blows a giant magnetic bubble on which the solar wind pushes.
The electron column density in a magnetic bubble after a nuclear detonation in the upper atmosphere.
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