from the GNU version of the Collaborative International Dictionary of English.

  • (Physics) An air-filled gap in a magnetic or electric circuit; specif., in a dynamo or motor, the space between the field-magnet poles and the armature; clearance.


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  • “Security experts say the ideal approach is to carefully identify a corporation’s most valuable intellectual property and data, and place it on a separate computer network not linked to the Internet, leaving a so-called air gap.”

    The New York Times, The Lock That Says ‘Pick Me’ , by Steve Lohr, January 17, 2010

    January 18, 2010

  • ‘Sitting at a small wooden table in the Bunker, Assange looked exhausted. His lanky frame was arched over two computers—one of them online, and the other disconnected from the Internet, because it was full of classified military documents. (In the tradecraft of espionage, this is known as maintaining an “air gap.”)’

    The New Yorker, No Secrets, by Raffi Khatchadourian, 7 June 2010.

    June 16, 2010