How do one-way mirror work?

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By: Jaydon Bingham

Many people have seen one-way mirrors in movies. But do they know how it works? The secret is a one-way mirror has a reflective costing applied in a very thin layer. This layer is so thin that it’s called a half-silvered surface. At the molecular level, there are reflective molecules all over the glass in an even film but only half of the glass is covered. The half-silvered surface will reflect about half the light that hits its surface, while letting the other half go straight through.

One-way mirror relates to engineering  because it gives people an abilityto see into rooms and not be seen by the other side. This is used in espionage, interrogation, and police stations. It also takes engineer to make that thin layer of silver on the top.