Air core may refer to:
- Air core drilling, a form of rotary air drilling
- Magnetic core
Famous quotes containing the words air and/or core:
“A man that is born falls into a dream like a man who falls into the sea. If he tries to climb out into the air as inexperienced people endeavour to do, he drowns.”
—Joseph Conrad (18571924)
“For books are more than books, they are the life
The very heart and core of ages past,
The reason why men lived and worked and died,
The essence and quintessence of their lives.”
—Amy Lowell (18741925)
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