Non-reversing mirror
Encyclopedia
A Non-reversing mirror is a mirror
that presents its subject as it would be seen from the mirror. It is possible to make a non-reversing mirror by connecting two regular mirrors at their edges at a 90 degree
angle
. If you position the join so that it is vertical and look into the angle, you will see a non-reversed image of yourself. You sometimes see this in public toilets where there are mirrors on two walls which are at right angles. Looking towards the corner, you can see such an image. The problem with this type of non-reversing mirror is that there is a big line down the middle interrupting your view. However, if first surface mirrors are used, as well as the angle set to exactly 90.00 degrees, the join can be made invisible.
Another type of non-reversing mirror can be made by making the mirror concave (curved inwards like a bowl). At a certain distance from the mirror a non-reversed image will appear. The disadvantage of this is that it only works at a certain distance.
A patent for a non-reversing mirror was issued to John Joseph Hooker in 1887.
Mirror
A mirror is an object that reflects light or sound in a way that preserves much of its original quality prior to its contact with the mirror. Some mirrors also filter out some wavelengths, while preserving other wavelengths in the reflection...
that presents its subject as it would be seen from the mirror. It is possible to make a non-reversing mirror by connecting two regular mirrors at their edges at a 90 degree
Degree (angle)
A degree , usually denoted by ° , is a measurement of plane angle, representing 1⁄360 of a full rotation; one degree is equivalent to π/180 radians...
angle
Angle
In geometry, an angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle.Angles are usually presumed to be in a Euclidean plane with the circle taken for standard with regard to direction. In fact, an angle is frequently viewed as a measure of an circular arc...
. If you position the join so that it is vertical and look into the angle, you will see a non-reversed image of yourself. You sometimes see this in public toilets where there are mirrors on two walls which are at right angles. Looking towards the corner, you can see such an image. The problem with this type of non-reversing mirror is that there is a big line down the middle interrupting your view. However, if first surface mirrors are used, as well as the angle set to exactly 90.00 degrees, the join can be made invisible.
Another type of non-reversing mirror can be made by making the mirror concave (curved inwards like a bowl). At a certain distance from the mirror a non-reversed image will appear. The disadvantage of this is that it only works at a certain distance.
A patent for a non-reversing mirror was issued to John Joseph Hooker in 1887.