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:

    “An air lambent with adult enterprise ...”
    —Philip Larkin (1922–1986)

    “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)