The Baghdad Battery: Found near Baghdad, this controversial artifact from the Parthian or Sasanian period (c. 250 BCE - 224 CE) consists of a clay jar, copper cylinder, and iron rod. Some researchers propose it functioned as a primitive galvanic cell, possibly used for electroplating or medical therapy. While its true purpose is debated and unproven, the artifact's structure resembles a simple battery, hinting at potential ancient knowledge of electrochemical principles.
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