With some exceptions, an Employee is covered by the HCSO if the Employee works for an Employer covered by the HCSO and: 1  Is entitled to be paid the minimum wage; 2  Has been employed by the Employer for at least 90 calendar days; and. 3  Works at least 8 hours per week in San Francisco.
Vortex ring. Spark photography image of a vortex ring in flight. A vortex ring, also called a toroidal vortex, is a torus-shaped vortex in a fluid or gas; 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.
vorÂ·texÂ·es or vorÂ·tiÂ·ces (-tÄ­-sÄzâ²). 1. A whirling mass of water or air that sucks everything near it toward its center. 2. A place or situation regarded as drawing into its center all that surrounds it, and hence being inescapable or destructive: a vortex of political infighting; a vortex of despair.ortex. n, pl-texes or-tices (-tÉªËsiËz). 1. (General Physics) a whirling mass or rotary motion in a liquid, gas, flame, etc, such as the spiralling movement of water around a whirlpool. 2. any activity, situation, or way of life regarded as irresistibly engulfing.