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''.
Friction, as a physical term, is the force that opposes to movement when two objects contact each other in the shpere of cinematics. It is produced by the contact between atomâ¦s. Friction as a physical property cannot be decreased nor increased. But, by placing other object between these initial two can give different friction between those two, reducing the force that opposes to movement and therefore, at the end of the ecuation, reducing friction. Increase friction by having rougher surfaces rubbing together. Decrease friction by having smoother surfaces rubbing together. Remove oil or grease to increase friction. Add oil or grease to reduce friction. Classical friction depends on two factors: weight and friction coefficient. When decreasing weight is usually problematic or impossible, friction can be decreased by lowering the friction coefficient.