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.
(2,8) torus link. In knot theory, a torus knot is a special kind of knot that lies on the surface of an unknotted torus in R 3. Similarly, a torus link is a link which lies on the surface of a torus in the same way.Each torus knot is specified by a pair of coprime integers p and q. A torus link arises if p and q are not coprime (in which case the number of components is gcd (p, q)).A torus knot is trivial (equivalent to the unknot) if and only if either p or q is equal to 1 or â1. The simplest nontrivial example is the (2,3)-torus knot, also known as the trefoil knot. torus knot is trivial iff either p or q is equal to 1 or â1. Each nontrivial torus knot is prime and chiral. The (p, q) torus knot is equivalent to the (q, p) torus knot. This can be proved by moving the strands on the surface of the torus, which is nicely illustrated here.