Fortune Telling Collection - Free divination - Why does alchemy divide gold with copper plates coated with mercury?
Why does alchemy divide gold with copper plates coated with mercury?
In fact, this is based on the density principle. The density of gold, mercury and stone sand is the largest, and the stone sand is the smallest. Therefore, after mercury screening, gold sinks at the bottom and stone sand floats on it. Finally, the stone sand is removed and the mercury is filtered out, so that the gold is separated.
Just like primary school homework, it is a principle to teach you to separate broken foam from small steel balls with water.
Washing with water has the same effect. In movies, western cowboys often look for gold by the river with plates, that is, using the buoyancy and oscillation of water, the gold sinks to the bottom of the water, and the stone sand on it is gradually washed away.
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