Collier's New Encyclopedia

A complete general encyclopedia of 1921 — the world as it was understood just after the Great War, from Aachen to Zwingli, across twelve volumes and six thousand pages.

HomeV › Volsungs

Volsungs

a famous heroic race in old German legend, its founder Volsung or Walsung, the grandson of Odin, and its brightest ornament Volsung's son.

Siegmund. Sigfried or Sigurd, hero of the "Nibelungenlied," is of the same stock. The tale is enshrined in the Old VOLTA Icelandic Volsungasaga, which has been followed by William Morris in his "Story of Sigurd the Volsung."

VOLT (named in honor of Alessandro Volta), in electricity, the unit which expresses difference of potential. An eleccurrent is in many respects analogous to a flow of water. The fundamental unit is one of mere quantity, the coulomb, and merely expresses sufficient current to do a certain amount of work. But the same quantity of at one inch per second, and through onewater would flow through a large water would flow through a large pipe half the diameter at four inches per second. Hence we get the unit of expressing quantity per second (the ampère); and thirdly, as a greater pressure or force is required to drive water at a given rate per second through a small pipe, or greater resistance so as to maintain a given quantity per second, in electrical currents we have this force or pressure, considered as the difference of potential or electrical pressure at the two ends of the circuit of wire. The resistance of a wire to the passage of a circuit is measured in ohms (units), and a volt is the difference of potential required to drive an effective current of one ampère through a wire interposing the resistance of one ohm.

← VolskVolta (River of west Africa) →