TransactionsPublished under the care of the General Secretary and the Treasurer . Fia. 200 14O0 ItiOO IbUO ;_^ 348 NAGAOKA: MAGNETOSTRICTION. Effect of tension on the change of length. By suspending theweight to the wire under examination, we can easily observe theeffect of tension on the change of length. Bidwell showed thatloading brings down the maximum in an iron wire, and finallymakes the wire always contract. Steel is similarly affected bytension as in iron. The contraction in nickel is generally dimin-ished by loading, while in nickel steels, there is continuous diminu-tion
TransactionsPublished under the care of the General Secretary and the Treasurer . Fia. 200 14O0 ItiOO IbUO ;_^ 348 NAGAOKA: MAGNETOSTRICTION. Effect of tension on the change of length. By suspending theweight to the wire under examination, we can easily observe theeffect of tension on the change of length. Bidwell showed thatloading brings down the maximum in an iron wire, and finallymakes the wire always contract. Steel is similarly affected bytension as in iron. The contraction in nickel is generally dimin-ished by loading, while in nickel steels, there is continuous diminu-tion of elongation by increasing the tension. An interesting experiment by Ehoads shows that a rolled orstretched sheet of iron shows a different behavior as regards thelength change, showing that the previous history is still to betraced in magnetostriction. Effect of temperature on the change of length. The subject wasstudied by Honda and Shimizu* between the temperatures rangingfrom —184° to 1200°, by means of a special optical lever. A finewire which is attached to one end of the ro
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Keywords: ., bookcentury1900, bookdecade1900, bookidtr, booksubjectelectricity
