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Vortex Optics is a DBA of Sheltered Wings, Inc., which was incorporated in Wisconsin in 1989. Sheltered Wings, Inc. DBA Vortex Optics began in 2002. In 2022 after extensive research, testing and reviews Vortex became an official supplier and contractor to the American Military as the U.S. Army selected Vortex‘s XM-157 fire control system for its Next Generation Squad Weapon program.
Yelp users can make restaurant reservations in Yelp through Yelp Reservations, a feature initially added in June 2010; in 2021 the service was consolidated with others into "Yelp Guest Manager". [ 101 ] [ 102 ] Yelp's reservation features have been done through SeatMe , which was acquired by Yelp in 2013. [ 55 ]
The vortex is begun by briefly turning on a diffuse heater (83) and electrically driving the turbines (21) as fans. This moves mildly heated air into the vortex arena (2). The air must have only a mild temperature difference because large temperature differences increase mixing with cold ambient air and reduce efficiency.
In general, vortex lines (in particular, the axis line) are either closed loops or end at the boundary of the fluid. A whirlpool is an example of the latter, namely a vortex in a body of water whose axis ends at the free surface. A vortex tube whose vortex lines are all closed will be a closed torus-like surface.
The name first appeared in an advertisement for the 1985 model year 4.3 L V6 that used "vortex technology" to create a vortex inside the combustion chamber, creating a better air / fuel atomization. [1] It has since been used on a wide range of engines. Modern Vortec engines are named for their approximate displacement in cubic centimeters. I4
VORTEX research helped the National Weather Service (NWS) to provide tornado warnings to residents with a lead time of 13 minutes. [11] A federal research meteorologist , Don Burgess , estimates that the "false alarms" pertaining to severe weather by the National Weather Service have declined by 10 percent.
A vortex ring, also called a toroidal vortex, is a torus-shaped vortex in a fluid; that is, a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. The dominant flow in a vortex ring is said to be toroidal , more precisely poloidal .
An optical vortex (also known as a photonic quantum vortex, screw dislocation or phase singularity) is a zero of an optical field; a point of zero intensity. The term is also used to describe a beam of light that has such a zero in it.