An elementary book on electricity and magnetism and their applications . Alessandro Volta (1745-1827). Great Italian physicist, professor at Como and at Pavia; inventor of the firstelectric battery (voltaic pile) and various electrostatic instruments, such asthe electroscope, the electrophorus, and the condenser; first one to measurethe difference of potential arising from the contact of dissimilar substances;the volt, the unit of electromotive force, is named in his honor. PLATE Andhi; Mauii. Ampere (1775-1836). French physicist and mathematician; professor al the Polytechnic School inPa
An elementary book on electricity and magnetism and their applications . Alessandro Volta (1745-1827). Great Italian physicist, professor at Como and at Pavia; inventor of the firstelectric battery (voltaic pile) and various electrostatic instruments, such asthe electroscope, the electrophorus, and the condenser; first one to measurethe difference of potential arising from the contact of dissimilar substances;the volt, the unit of electromotive force, is named in his honor. PLATE Andhi; Mauii. Ampere (1775-1836). French physicist and mathematician; professor al the Polytechnic School inParis and later a1 the (Jollege of France ; in L820 began his experiments onthe relations of electricity t«» magnetism; in 1823 published his greal memoiron the magnetic effects of currents; first stated the rule for the relation be-tween the direction of a current in a wire and the direction of the magneticfield about it. The ampere, the unit of intensity of current, is named in hishonor. BATTERIES FOR PRODUCING ELECTRIC CURRENTS 5 cannot be directly perceived by our senses, — and the only wayin which we may recognize it is by its various effects. 5. A simple electric cell. Suppose we take a tumbler and placein it a strip of zinc and a strip of copper so that they do not toucheach other and then pour in some dilute sulphuric acid (Fig. 3).We observe that the copper plate is not affected by the acid whilethe zinc plate is soon covered with bubbles which rise to the top andth
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmagnetism, bookyear19
