Air Core

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:

    “Oh, it’s home again, and home again, America for me!
    I want a ship that’s westward bound to plow the rolling sea,
    To the blessed Land of Room Enough beyond the ocean bars,
    Where the air is full of sunlight and the flag is full of stars.”
    —Henry Van Dyke (1852–1933)

    “True, there are architects so called in this country, and I have heard of one at least possessed with the idea of making architectural ornaments have a core of truth, a necessity, and hence a beauty, as if it were a revelation to him. All very well perhaps from his point of view, but only a little better than the common dilettantism.”
    —Henry David Thoreau (1817–1862)