Have you ever been in a dressing room or bathroom and felt like someone was watching you? Mirrors are found in very common places. They’re in hotel rooms, bathrooms, dressing rooms, toilets, etc.; they’re pretty much everywhere. But do you know if it’s a mirror or 2-way mirror (you can’t see them, but they can see you)?
A two-way mirror is a piece of glass coated with a substance called micro pane. If standing on the treated side, you see your reflection. The untreated side looks like a tinted window. But can you tell the difference between a 2-way mirror and a regular mirror?
Well, there’s a simple trick that determines whether you’re looking at a mirror or 2-way glass. It’s called a fingernail test.
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