"Polarity" Quotes from Famous Books
 ... the powers of nature into our service, and of making them perform the principal part of what, we must otherwise have wholly performed ourselves. In navigation is it possible to doubt that the powers of nature—the buoyancy of the water, the impulse of the wind, and the polarity of the magnet—contribute fully as much as the labours of the sailor to waft our ships from one hemisphere to another? In bleaching and fermentation the whole processes are carried on by natural agents. And it is to the effects of heat in softening and melting metals, in preparing our food, ...
— The trade, domestic and foreign • Henry Charles Carey |
