[E] By a light body is meant one of small mass, a heavy body possessing much greater mass.
[F] V represents the velocity of a falling body at the end of t seconds.
[G] The following formula is of assistance in computing horse-power in problems: H. p. = (lbs. × ft.)/(550 × sec.).
[H] Consider the diameter of the front sprocket as 6 inches.
[I] Radiant heat is really radiant energy and becomes heat when it is absorbed by a body.
[J] American League of Automobile Manufacturers.
[K] Many scientists consider that current in a conductor consists of negative electrons flowing in a direction opposite to that described in Art. 243. This is called the electron current, as distinguished from the electric current described above.
[L] A shunt is a conductor or coil connected in parallel with another conductor or circuit. It carries a part of the current.
[M] An induced current is one produced by changing the number of magnetic lines of force passing through a coil.
[N] A wave is a disturbance in a substance or medium that is transmitted through it.