magnetic bubble

American  

noun

Computers.

1. a tiny mobile magnetized area within a magnetic material, the basis of one type of solid-state storage medium magneticbubblememory.

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magnetic bubble British  

noun

1. 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

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Etymology

Origin of magnetic bubble

First recorded in 1965–70

Example Sentences

Within this vast magnetic bubble, scientists have observed an electric field that stretches from the morning side of Earth to the evening side.

From Science Daily • Oct. 31, 2025

When they slammed into Earth’s magnetic bubble, the world was treated to iridescent displays of the northern and southern lights.

From New York Times • Jun. 13, 2024

While many solar storms send gusts of solar wind in other directions, those that hit the Earth can compress and distort our magnetosphere, the protective magnetic bubble surrounding the planet, says Miesch.

From National Geographic • Dec. 1, 2023

“It is a mission to go beyond the boundaries of the heliosphere, the vast magnetic bubble that encases the entire solar system.”

From Scientific American • Jan. 6, 2022

Orion is designed to operate beyond the protective magnetic bubble that surrounds Earth - and protects astronauts on the space station.

From BBC • Nov. 10, 2021