Agate is good protective energy stone, especially for children, and is very calming and soothing. It also can help strengthen the body's connection to the earth.
The friction factor, f, is a dimensionless factor that depends primarily on the velocity u, diameter D, density Ï, and viscosity Î·. It is also a function of wall roughness which depends on the size Îµ, spacing Îµ' and shape of the roughness elements characterized by Îµ''.
Integrating Factors An integrating factor is any function that is used as a multiplier for another function in order to allow that function to be solved; that is, using an integrating factor allows a non-exact function to be exact. Integrating factors are most often used in first-order differential equations, but may also be used in higher-order equations as well.