title: Helicity
text: # Helicity
  
  Helicity may refer to:
  
  * Helicity (fluid mechanics), the extent to which corkscrew-like motion occurs
  * Helicity (particle physics), the projection of the spin onto the direction of momentum
  * Magnetic helicity, the extent to which a magnetic field "wraps around itself"
  * Circular dichroism, the differential absorption of left and right circularly polarized light
  * A form of axial chirality
  * A former name for inherent chirality
  