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A mirror is a simple device whose operation is based on a

phenomenon known as reflection, which dictates that, when

particles of light—known as photons—hit the surfaces of

certain objects, they bounce off at the same angle at which

they hit By this scientific principle, because a mirror has

a smooth surface, it reflects back a coherent reflection of

the image in front of it as photons rebound off its surface

(Rough surfaces don’t reflect because the photons bounce

off in many directions and become scattered ) Obviously,

not all smooth surfaces reflect like mirrors This is because

some surfaces absorb the photons and do not reflect them

To prevent light from

being absorbed and to aid

in reflection, the glass in

most household mirrors

has a thin layer of smooth

aluminum applied to the

rear side to create what’s

known as a back-silvered

mirror This layer of aluminum

reflects the light

through the clear glass to

produce a “mirror image”

of the object in front of it

Meanwhile, the rear side of

the aluminum is usually painted black in order to seal and

protect the aluminum coating, which provides the reflection

It is thought that such mirrors reflect approximately 80

percent of the photons that hit them

On a one-way mirror (sometimes erroneously called a

two-way mirror), the film of metal applied to the glass is very

thin and so it reflects about half the photons that hit it and lets

the other half pass through it When used between a bright

room and a dark room, such a mirror reflects the light in the

bright room and seems transparent in the darker room.


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Comment by shabbir ghuman on April 10, 2013 at 5:51am

thanks to all

lagta hai sub ko samjh aa gaya hai

Comment by ɖɒȠλɒȽɄɈɌȪɀȊ on April 9, 2013 at 9:37pm

Informative yar !!!

Comment by +αттιтυ∂є ρяιи¢є on April 9, 2013 at 7:14pm

nice sharing

Comment by + *¨^¨*+sana(MBA 4sem)+*¨^¨* + on April 9, 2013 at 6:47pm


Comment by shabbir ghuman on April 9, 2013 at 6:22pm

A Book By Andriew Thompson 200 Questions and Answers

Lao bhai Zain pi bi aur refrence bi

Thanks for considaration

Comment by + Ali on April 9, 2013 at 6:16pm

Nice blog bro but try to make the blog attractive by adding pics and also mention the source. thanks

Comment by + Ali on April 9, 2013 at 6:16pm


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