helicity

{{wiktionary|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