FEATURES AND BENEFITS
How does a Two Way Mirror Work ?
A two-way mirror is often called a "one-way mirror" by members of the general public. The misconception is that such a mirror acts as a mirror from one side, and acts as a window (letting light through) from the other side. Actually, the two-way mirror is letting about half of the light through, and reflecting the other half of the light, from both sides. it is also called a half-silvered surface, as just enough reflecting metal film is deposited on the glass, so that about half of the light is reflected.
So, why does a two-way mirror seem to behave like the two sides are different? It behaves this way when one side is in the dark. Then almost no light goes from the dark side to the light side, and almost no light is reflected back from the dark side to the dark side. Most of the light comes from the bright side. Plenty of light travels through the mirror, and plenty of light is reflected back. To people on both sides of the mirror, the light from the bright side overwhelms the light from the dark side. So, people on the bright side see a mirror, and people on the dark side see a window.
Surveillance for a Shops, Showrooms, Warehouse, Office, Daycare, or Bank.
Home security, Nanny-cam.
Hidden television, TV in the bathroom.
Interrogation of suspects.