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:

    “[Allegory] should ... be very sparingly practised, lest, whilst the writer plays with his own fancies and diverts himself by cutting the air with his wide spread wings, he should soar out of view of his readers, leaving them in confusion and perplexity to explore his viewless track.”
    —Sarah Fielding (1710–1768)

    “In the core of God’s abysm,—
    Was a weed of self and schism;
    And ever the Daemonic Love
    Is the ancestor of wars,
    And the parent of remorse.”
    —Ralph Waldo Emerson (1803–1882)