Nikola Tesla Books
HIGH FREQUENCY PLANT CULTURE 159 Fig. 14. The condenser complete showing method of connection 30 plates each. The complete condenser consists of four units, of 30 plates each, connected in series multiple as shown in Fig. 14, and in order to make the description clearer the steps in the construction will be given for but one of the four units, which are alike in every particular. A good grade of varnish gold size is procured and placed on the work-table with a good soft brush about an inch in width. Tinfoil of the grade used by florists may be procured in pound packages containing four or five strips. of foil six inches wide and perhaps 48 inches long. The foil is to be cut up into pieces 6 by 8 inches in size, neatly flattened and separated ready to be applied to the glass plates, which should be arranged in a pile on the table. A plate is removed from the pile and given a quick, thin coating of the varnish (which dries in twenty minutes in the open air) and a sheet of foil immediately laid upon it, care being taken to see that the foil is accurately centered on the plate. The foil may be forced into smooth and close contact with the glass with the aid of a wad of cotton placed within a piece of soft cloth to make a sort of pounce
