Battery

(bat’-er-e) \_batte?’ia, a beating; bat- NAMES, ELEMENTS, FLUIDS, ETC., OF THE PRINCIPAL BAT Name of Positive Negative Ele- Cell. ment. Element. Bunsen. Zinc. Carbon. Beetz. Zinc. Copper. Callaud. Zinc. Copper. Zinc. Daniell. Copper. Edison-La- Zinc. Cupric oxid and lande. carbon. Fuller. Zinc. Carbon. Gravity. See Callaud. Gaiffe. Zinc. Silver. Grenet. Zinc. Carbon. Grove. Zinc. Platinum. Latimer Clark. Zinc. Mercury. Leclanche. Zinc. Carbon. Lelande Chap- Zinc. erone. Copper or iron. Maische. Zinc scraps Platinized carbon. in a bath of mercury. Zinc. Marie-Davy. Carbon. Maynooth. Zinc. Iron. Niaudet. Zinc. Carbon. Poggendorf. Zinc. Carbon. Schanschieff. Zinc. Carbon. Scrivanoff. Zinc. Silver. Smee. Zinc. Platinized silver. Walker. Zinc. Platinized carbon. Warren de la Zinc. Silver. Rue. tery]. A series of two or more pieces of apparatus arranged to produce increased effect,, as battery of boilers, prisms, lenses, galvanic cells. It is usually applied to a series of cells producing electricity (voltaic or galvanic battery); also, frequently to a single cell. B., Faradic, one giving a favadic current. B., Galvanic, one giving a galvanic or chemic current. B., Primary, the combination of a number of primary cells so as to form a smgle battery. B., Secondary, the combination of a number of storage-cells to form a single electric source. The following table shows the materials used in the more important batteries, and the electromotive force (E. M. F.) in volts. TERIES. Depolarizing E. 1.04 M. F. Exciting Agent. Agent. in Volts. Nitric acid. i-5 Sulphuric lute. acid, di- 1.75 to0.1.96 75 Zinc sulphate in Copper sulphate, in plaster-of-Paris. plaster-of-Paris. 1.0 to 1. 14 Solution of zinc sul- Cupric sulphate. 1. to 1. 14 Zinc sulphate. phate. Cupric sulphate. Pota ium hydroxid. Cupric oxid. Zinc chlorid. Pota ium dichromate and chloric acid. hydro- Zinc chlorid. Silver chlorid. 1.02 Sulphuric acid and Chromic acid. 2.0 pota ium mate. dichro- Nitric acid. i.Q4 to 1.97 Sulphuric acid, di- 1.436 1.25 lute. Mercuric sulphate. Mercuric sulphate. 1.42 Ammonium chlorid. 0.98 Manganese dioxid. Pota ium hydroxid. C*ipric oxid. Common salt solu- None separate. tion. 1.52 1.63 i-5 Sulphuric acid, di- Mercuric sulphate. lute. Nitric acid (strong). Sulphuric lute. acid, di- Common salt solu- Chlorated lime. tion. 1.93 Chromic acid. Pota ium dichromate and sulphuric acid. 1.56 Mercurial solution. None separate. 1.05 Pota ium hydroxid. Silver chlorid. None. Sulphuric acid, dilute. 0 5 to 1.0 None. 0.66 Sulphuric lute. acid, di- Ammonium chlorid. Silver chlorid. 142