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.
Freebase(0.00 / 0 votes)Rate this definition: Ventus. Ventus is a 2001 science fiction/fantasy novel by Karl Schroeder. It was Schroeder's debut solo novel, and introduced his concept of thalience. The novel is available for free under the Creative Commons license at Schroeder's website. Its prequel, Lady of Mazes, was published in 2005.