The London, Edinburgh and Dublin philosophical magazine and journal of science . ertzsinvestigation. He carefully studied the forces as representedby the above equations, and has plotted them and shown thatthey represent a series of whirl rings thrown off from theoscillator and growing gradually thinner and thinner until ata distance the rings become nearly plane waves, and theopposite sides being always awave-length apart are the twoopposite phases of the accompanying diagramroughly represents this state ofaffairs. It is evident on the mostcursory consideration that thesewaves must h
The London, Edinburgh and Dublin philosophical magazine and journal of science . ertzsinvestigation. He carefully studied the forces as representedby the above equations, and has plotted them and shown thatthey represent a series of whirl rings thrown off from theoscillator and growing gradually thinner and thinner until ata distance the rings become nearly plane waves, and theopposite sides being always awave-length apart are the twoopposite phases of the accompanying diagramroughly represents this state ofaffairs. It is evident on the mostcursory consideration that thesewaves must have a longitudinalregion. The lines of force inany one wave are up to the axisalong any one spherical surfaceall round; and if there is not tobe concentration anywhere, i. there is no electrification of themedium, they must turn roundand be continuous with the returnphase of the wave. The reasonwhy they are so feebly concen-trated in this return region isbecause it is so enormously extended. If the wave-length besmall compared with the distance from the origin, the flows. 262 Prof. G. F. FitzGerald on the up and down along the equator are very close to one anotherand consequently the force is concentrated ; while this sameforce which is concentrated within a wave-length has the wholehemisphere to return in, and so the longitudinal concentrationis quite small, and that is what is represented by the smallvalue of the longitudinal component at any point. The totalquantity of longitudinal component must be, on the whole,equal to the transverse component at the equator. II. In the case of several simple oscillators oriented in dif-ferent directions the resultant vector potential can be repre-sented by A = UCQS lP*~9r) | ysmpt~^rr r where U and V are vectors at right angles to one effect is the same as if two opposite electrons weremoving on opposite sides in an elliptic orbit whose plane wasthat of U and V and whose axes were these two lines. It is interesting to ob
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Keywords: ., bookcentury1800, bookdecade1840, bookidlondon, booksubjectscience
