Start Baghdad battery dating

Baghdad battery dating

Most of the components of the objects are not particularly amenable to advanced dating methods.

The artifact had been exposed to the weather and had suffered corrosion, although mild given the presence of an electrochemical couple.

An alternative, but still electrical explanation was offered by Paul Keyser.

It was suggested that a priest or healer, using an iron spatula to compound a vinegar based potion in a copper vessel, may have felt an electrical tingle, and used the phenomenon either for electro-acupuncture, or to amaze supplicants by electrifying a metal statue.

Whoever made the Baghdad batteries, assuming they were in fact galvanic cells, may not have fully understood the principles.

For example, it is well known that the Ancient Greeks were aware of electrostatic electrical phenomena produced by amber, but they regarded it as a mere curiosity or toy and developed no electrical theory or functional devices.

The artifacts consist of ~130 mm (~5 inch) tall terracotta jars (with a one and a half inch mouth) containing a copper cylinder made of a rolled-up copper sheet, which houses a single iron rod.

At the top, the iron rod is isolated from the copper by asphalt plugs or stoppers, and both rod and cylinder fit snugly inside the opening of the jar which bulges outward towards the middle (reverse hourglass shape).

multiple batteries connected in series and many of these are simple inserted against each other, not connected by wire Some have claimed that these artifacts provide evidence of ancient knowledge of electricity, millennia before the conventional dates given for its discovery.