(E_1+E_2+etc.)-(F_1+F_2+etc.)
C = -----------------------------
R

[TEX: C = \frac{(E_1+E_2+\text{etc.})-(F_1+F_2+\text{etc.})}{R}]

C C
P = ---((E_1+E_2+etc.); Q = ---(F_1+F_2+etc.)
746 746

[TEX: \frac{C}{746}(E_1+E_2+\text{etc.});\ Q =
\frac{C}{746}(F_1+F_2+\text{etc.})]

C squared R
H = ----- .
746

[TEX: H = \frac{C^2 R}{746}.]

The lifting power of an electro-magnet of given volume is proportional
to the heat generated against resistance in the wire of the magnet.

The future of many electrical appliances depends on how general is the
public comprehension of the lessons taught by these wall sheets. If
a few capitalists in London would only spend a few days in learning
thoroughly what these mean, electrical appliances of a very distant
future would date from a few months hence.

A number of experiments were shown, in some of which electrical energy