The back of the mirror is silver or mercury?

If we look closely at the mirror, we see it giving off a silver light. Some say it is mercury, some people are silver.

The day before the production of mirrors, people stuck behind the mirror of a tin film, then poured mercury. Because mercury can melt tin, forming a sticky white solution. This 'mercury and tin' medicine can stick to the mirror surface.

But producing a mirror like that was very unpopular, mercury was toxic, the mirror surface was not very bright.

Today's mirrors, most people often put on 1-layer silver glass. That silver creates 'silver and glass reaction' .

You can do this experiment yourself. First, take a clean rinse tube, pour it into 2 ml of 2% silver solution, then slowly add 5% ammonia water, small to fit the initial generated sediment completely, then pour 2ml of 10% glucose solution into it. Mix well, let the test tube heat in hot water from 60oC-80oC. For a moment, there was a bright silver layer in the test tube. We have finished the coating of the back of the mirror

Glucose is a substance that can be reconstituted, it can reconstitute silver in silver nitrate into silver metal deposited on the glass surface. In addition to using glucose for silver reconstitution, in the mirror manufacturing factory, it is also used to reconstitute silver. In order to make the mirror durable, after the silver is finished, one more layer of red paint is added to protect the silver layer, making them not peeling.