Principle of mirror

Whether it is a flat mirror or a right or wrong plane mirror (concave mirror or convex mirror), light will obey the law of reflection and be reflected by the mirror. After the reflected light enters the eye, it can form vision in the retina. In a plane mirror, when a parallel beam of light touches the mirror, the whole perception changes the direction of its advance in a parallel way, and the image at this time is the same as that seen by both eyes.

Mirror manufacturing method

Silver plating: put the washed glass flat on the horizontal wooden frame or wooden bar, take one part of silver solution and one part of reducing solution, mix and pour them on. The liquid medicine should not flow away. About two cents per square meter. When it gradually reacts on the glass to form a silver mirror, pour out the excess liquid medicine, rinse with water, and pour 10% gelatin to dry. After drying, a layer of iron red primer or other antirust paint liquid is applied on the surface to form a mirror. Cleaning glass: after cutting the glass according to the specifications, first wash the front and back sides with tap water, and then coat the iron red powder with water on the side to be plated, and then wipe off the iron red powder after drying, and then wash it with water. Then a trace of tin chloride solution is used to scrub the glass surface to be plated. After washing, the residual stannous chloride is washed away with water. Finally, rinse the glass with clean water (preferably distilled water).