...pile was estahlished was this : — In a vessel of water were placed at sonns distance from each other two wires, one connected with the positive and the other with the negative pole of the Voltaic hattery. Now mark the effect ofthU arrangement. Ir. was found that, the wires heing of...

...prevent metallic contact between the coil,) upon the ends of the wire being brought in contact the one with the positive, and the other with the negative pole of a galvanic battery, the iron becomes powerfully magnetic, attracting with great force any pieces of iron...

...I2i. copper columns a and b, fixed on a wooden stand, are connected together at their base, the one with the positive, and the other with the negative pole of a powerful dry pile placed horizontally below the stand. This pile is generally formed of silt smaller...

...cistern filled with a saturated solution of the sulphate of copper. Two brass rods, communicating one with the positive and the other with the negative pole of a voltaic battery, are placed upon it, from which the mould, which has been previously prepared, is suspended....

...plates there is a small hole for the reception of 2 brass pins, one of which is connected Fig. 409. with the positive, and the other with the negative pole of a voltaic pile, CC. Each of the 35 plates is arranged to correspond with the arrangement of the 35 gold...

...of wood, or an earthen vessel, containing the solution, the decomposition of which is desired—for example, sulphate of copper. Two wires, one connected...with the negative pole of a battery, Q. are extended aloug the top of the trough, and supported on rods of dry wood, B and D. The medal, or other article...

...of wood, or an earthen vessel, containing the solution, the decomposition of which is desired—for example, sulphate of copper. Two wires, one connected...of the trough, and supported on rods of dry wood. B aud D. The medal, or other article to be coated, is attached to tlie negative wire, and a plate of...

...sulphate of copper. Two brass rods pass across, and rest on the ends of, the bath. One of these rods is connected with the positive and the other with the negative pole of a Daniel,s element. From the rod connected with the negative pole is suspended the mould, and from the...

...light possible, calcined carbon points are employed. They are at first placed in contact, one being connected with the positive, and the other with the negative pole of a powerful galvanic battery, as shown in Fig. 287. The points immediately become incandescent, Fig. 287....

...of the plates there was a small hole for the reception of two brass pins, one of which was counected with the positive and the other with the negative pole of a voltaic pile. Each of the 35 plates was arranged to correspond with one of the 3 5 gold pins in the...