【正文】
overed that if you 微博:寫作五分 use them together with iron rods and some liquid in a c lay vessel, they will produce electricity. That39。微博:寫作五分 TPO25 Reading In 1938 an archaeologist in Iraq acquired a set of clay jars that had been excavated two years earlier by villagers constructing a railroad line. The vessel was about 2,200 years old. Each clay jay contained a copper cylinder surrounding an iron rod. The archaeologist proposed that vessel were ancient electric batteries and even demonstrated that they can produce a small electric current when filled with some liquids. However, it is not likely that the vessels were actually used as electric batteries in anc