Petes Auto Glass

Masumi

There is really no such thing as one way glass . The way the one way efceft is made is that you have a sheet of glass that has a partial mirror on one surface ( partial mirror means that not all of the light is reflected, some of it is transmitted or let through).The glass is placed between two rooms or areas that have very different lighting. The room that is being observed is very well lit, and the room where the observer sits is dark. If you are on the well lit side you see the glass as a mirror, reflecting the light in your room. There is almost no light from the observer side coming through to compete with the reflected light from your room.If you are in the observer's room there is very little light, if any from your side to reflect from the mirror. However, the small amount of light that the mirror transmits from the well lit side is much brighter than any light originating on the observer's side, so the observer can easily see into the well lit room.So there is nothing really special about the glass, it's all about how the lighting is arranged. The one way glass doesn't do anything different to light that falls on it from the two sides. This is a basic concept from optical physics call reciprocity meaning that if there is no absorption, but only reflection and transmission, light going through an optical system will be affected the same way, which ever direction it is going.

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