Elementary lessons in electricity and magnetism (1906)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Schwetzky, Otto H. L. [from old catalog] · Chicago, Thompson & Thomas · leaf 180
le. The reason of this is,explained hereafter (Art. 352). Hence it will be seenthat different styles of instrument are needed for differentkinds of work ; but of all the requisites are that theyshould afford quantitative m.easurements, and.that theyshould be sufficiently sensitive for the current… … Fig. 88. wound upon an ivoryframe (Fig. 88), wasfor long the favouriteform of sensitivegalvanometer. Theneedles of this instru-ment^ being indepen-dent of the earthsmagnetism, take theirposition in obedienceto the torsion of thefibre by which theyare hung. The frameon which the coil iswound must be…
Electricity · Magnetism
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![An illustration from Novo teatro di machine et edificii per uarie et sicure operationi : co[n] le loro figure tagliate in rame é la dichiaratione, e dimostratione di ciascuna : opera necesaria ad architetti, e a quelli, ch[e] di tale studio si dilettano (1607)](https://img.insideoutlibrary.com/img/200/ia-novoteatrodimach00zonc-127-78.webp)
