Why do hotels use double-sided mirrors?

The reason why the hotel uses double-sided mirrors is illegal. The double-sided mirror is also called a two-way mirror or single-sided perspective glass. Its principle is to add a layer of metallic chromium, aluminum or iridium film on ordinary glass using a vacuum coating method.

This kind of glass can reflect most of the projected light back. Hotels are generally one-sided. Double-sided mirrors, which are not available in regular hotels, are illegal and are not advisable.

Testing methods for hotel mirrors

We use our fingers to test the thickness of the mirror. We align the fingernails with the position of the mirror to observe the gap between the fingernails and the fingernails. Are there any differences? If we see some distance between the two nails, it means that the mirror is a one-way mirror. A one-way mirror is an ordinary mirror.

And if there is almost no gap between the two nails and they are close together, it means that it is a double-sided mirror. A double-sided mirror means that the person opposite can see us, and we are But you can't see what's going on inside. If a double-sided mirror is installed in the hotel room, it will be very unsafe. We'd better check out in time.