Complete the sentence about Baghdad Battery with the correct year: In ______ he authored a paper offering the hypothesis that the Khujut Rabu jar may have formed a galvanic cell, perhaps used for electroplating gold onto silver objects.
Answer and explanation
Correct answer: B. 1938
In 1938 he wrote a paper suggesting that the Khujut Rabu jar may have formed a galvanic cell, perhaps used to electroplate gold onto silver. He noted very thin layers of gold.
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