Examples from the Web for frictional
There it becomes an effort tending either to move A upon B, or to move the body B itself, according to the frictional conditions.
There was a sense of electric surcharge everywhere, frictional, a neurasthenic haste for excitement.Aaron's Rod|D. H. Lawrence
Frictional Electricity is that produced by the friction of one substance against another.Hawkins Electrical Guide, Number One|Nehemiah Hawkins
He conceived of the air giving a frictional force to an object in motion.Our Legal Heritage, 5th Ed.|S. A. Reilly
When man first began experimenting, he produced a current by frictional means, and collected the electricity in a bottle or jar.Electricity for Boys|J. S. Zerbe