helicity (countable and uncountable, plural helicities)
The quality of being helical.
(physics, fluid mechanics, electrodynamics) Any of certain measures of the extent to which vortex lines (in fluid flow) or field lines (in a magnetic or electromagnetic field) kink and twist and/or link and coil around one another.
(physics, quantum mechanics) The quantized spin component of a moving particle along the direction of its motion.
Source: Wiktionary
8 November 2024
(noun) the act of furnishing an equivalent person or thing in the place of another; “replacing the star will not be easy”
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
