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Chapter 26 - 10: Kitchen_2
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... r is above 2.5, and the lowest hardness of iron is 4.
If the metal block were cast in lead, the scratches would be deeper. This level of scratching suggests it is indeed silver.
As for the reason for placing silver blocks in the water bucket, Chen Zhou thought it might be for purifying drinking water.
Although he did not know when the antibacterial use of silver originated, there are many museums in his hometown with Yuan dynasty relics. Through school-organized museum da ...
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