The battery of Baghdad is the name of an object discovered in a village close to Baghdad in 1936.

Introduction

In the years 1930, a Austrian Archéologue of the name of Wilhelm König discovers in the basements of the museum of Baghdad strange a Poterie 15 height cm for a diameter of approximately 7,5 cm. According to the datings carried out separately by Wilhelm König and Doctor St. John Simpson of the department Priche the Old East of British Museum, this Poterie would go back to year 224 after J. - C. Several were discovered in the ruins of Khujut Rabu close to Baghdad and ten others with Ctésiphon.

This device is closed of a bitumen stopper. Under the stopper, a stem is laid out of iron, is surrounded by a copper cylinder. These two elements are isolated at the base by a plug from bitumen. The cylinder is welded in its bottom by a tin and lead alloy. The only missing element so that this ancient pile functions is a ground wire connected to the copper cylinder and acid for the reaction. Such a pile can function with fruit juice in the place of the acid. According to the tests carried out, the researchers obtained electric tensions of about 1 volt.

These potteries disappeared during plundering of the museum of Baghdad in April 2003.

Use

The blue patina found on the copper cylinder is characteristic of the Galvanoplastie to the money. One can thus suppose that these piles were used to plate objects with noble metals. This assumption in conformity with is discovered jewels gilded by Catalyze, of the plated copper vases old money of more than 2500 years.

External bonds

• the battery of the Museum of Baghdad on site CIRAC
• the " crush of Bagdad" : a battery two centuries before Jesus-Christ? on the platform amp and the history of the electricity of CNRS.

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