"The boiling and spinning of sugar and the making of candies are classed among the 'frills of cookery'. But though everyone cannot hope to master all the intricacies of this branch of the culinary art, there is no reason why young people should not become, with advantages to themselves, expert...
All living things require food but none make use of
such a variety of foods as does the human race. Many
half civilized people of the earth live on very coarse
materials. The American Indians, for example, do not use
a great variety of foods such as we do, but...
The induction motor in its electromagnetic features
is essentially a transformer, while in its general behavior
it is analogous to the continuous-current shunt wound
motor. In a transformer the primary and secondary members
are both stationary and electrical energy is transformed
from one pressure to another by the ratio of...
Samples of insulating materials used in the construction
of electrical machinery and apparatus are
tested for dielectric strength before such are accepted
for use. This is done by applying to the sample a
high voltage until it is pierced through by the electric
spark. This is a parallel case to...
A carburetor, such as is used on a gasoline engine, is
an appliance for vaporizing liquid hydrocarbons by atomizing
the liquid and mixing it with air.
This mixture of gasoline vapor and air is drawn into
the cylinder of'a gasoline engine, compressed and exploded
by means of an electric spark;...