Smart mirror

All of us are using a mirror in our daily life, either in vehicles or in home to see our images for setting our hairstyle. So what? It is a very common thing. Right! But, what about a mirror that provides you more information rather than pictures or images. Today we are going to understand about the similar gadget that can provide weather, news, your emails, messages, and more. This is a ‘Smart Mirror’. A smart mirror may be a popular gadget in science fiction movies, but now they are real.

What is a Smart Mirror?

The smart mirror is like a normal mirror, it reflects images. However, as per the name Smart, it performs multiple functions like other smart gadgets: A smart mirror can display the weather, time date, news, and other data. It can even show video clips for entertainment and information. Some of the manufacturers made this smart mirror highly interactive with a touch screen feature. Not only do they look attractive and cool but also support a variety of applications. These are becoming more popular in homes and other commercial applications.

Inside engineering of the smart mirror:

To understand the proper functioning of the smart mirror, we must first learn how a mirror functions.

Normal mirror:

A traditional mirror or normal mirror is making by using a process that is known as ‘silvering’. A coat of some kind of highly reflective material (either metallic or non-metallic) is applied to one side of the glass. A layer of copper is added to the top to prevent the oxidation of the metal. After that entire assemble is sealed with a coat of paint. This layer protects the internal reflecting layer and also prevents any light from passing through to the other side of the glass. When light passes through the glass it gets reflected and our image mirrored in the mirror.

Two-way mirror:

We have seen this kind of mirror in several movies where a criminal is being questioned in one room while police officers watch grimly from another. When the bad man looks at the mirror from one side, he only sees his mirrored image but the people in the adjoining room can keep an eye on his every move. Now, the question is that how is this accomplished? Well just like a regular mirror, two-way mirror is manufactured using reflective metal which, in most cases, is aluminum-like metals. However, these mirrors involve an extremely thin coating of reflective material. As of result, when light falls on the glass, some of it gets reflected while the remaining passes through to the other side of the mirror. Most probably you have noticed that the police officer’s room is very dark whereas the interrogation room has bright light. Since there is no light in the police officer’s room or observation room, light does not pass into the interrogation room, and hence the bad man is not able to see what is happening on the other side of the mirror. On the other side, the interrogation room is having bright light; it gets reflected into the interrogation room. That’s how in a two-way mirror, at one side person can see other sided person but not vice versa.