. How to make and use electricity ... rection as in Figure 7. It will be observedthat the action of the helix in the last experiment is analogousto the deflection of a needle by an electric current. Place op^posite one end of the floating battery a second helix, Figure 8,in such a manner that the currents in the two helices mayhave the same direction. The two poles of the helices attractone another in conformity to the law previously the poles of the helix in your hand so that the cur-rents will flow in opposite directions, though still parallel;they repel one another. The tw
. How to make and use electricity ... rection as in Figure 7. It will be observedthat the action of the helix in the last experiment is analogousto the deflection of a needle by an electric current. Place op^posite one end of the floating battery a second helix, Figure 8,in such a manner that the currents in the two helices mayhave the same direction. The two poles of the helices attractone another in conformity to the law previously the poles of the helix in your hand so that the cur-rents will flow in opposite directions, though still parallel;they repel one another. The two helices appear to be polarized like two magnets, andfor many purposes may be considered magnets. Observe thatat one pole of each helix the current revolves id the direction HOW TO MAKE AND Si that the hands of a watch move, and at the opposite pole it re-volves in a direction contrary to the movement of the hands ofa watch Bring the north pole of a box-magnet near that poleot the helix where the motion of the current corresponds to. the movement of the hands of a watch. They attract one an-other; but if the same pole of the helix is approached bythe south pole of the magnet, * Hence, thatis the south pole of a helix where the current corresponds tothe motion of the hands of a watch (S), and that is the northpole where the current is in the reverse direction (N). But theimportant conclusion derived from these latter experimentsis, that helices through which currents are flowing behavetoward one another, or toward a magnet, in many respectsas if they were magnets. \jMM»lllllllilll*IMIII^ mMagnetize a cambric needle. Suspend it by a fine thread attached to its middle over a magnet, and midway between its poles. The needle, however placed, immediately takes a position parallel with the magnet. The magnet exerts a directive influence on the needle. Remove the magnet and the needle takes a northerly and southerly you carry the needle all over your t
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectricity, bookyear
