Raw materials and requirements
The glass should be transparent glass without any air bubbles in the middle;
Silver nitrate, the content is above 99.5%;
Ammonia, the concentration is 25-28%;
Potassium sodium tartrate, to be chemically pure.
Cleaning the glass: After cutting the glass according to the specifications, rinse the front and back sides with tap water first, then apply the iron red powder with water on the side to be plated, wipe off the iron red powder after drying, and wash it with water. Then wipe the surface of the glass to be plated with a small amount of tin chloride solution. After washing, rinse the remaining stannous chloride with water. Finally, rinse the glass with clean water (preferably distilled water).
Silver plating: Lay the cleaned glass on a horizontal wooden frame or wooden strip, take one part of silver liquid and one part of reducing liquid, stir and pour it on. The liquid medicine should not flow out. About 2 deciliters per square meter. After it gradually reflected the silver mirror on the glass, pour out the excess liquid medicine, rinse with water, and pour ten thousandths of gelatin to dry. After it dries, apply a layer of iron red primer or other anti-rust paint on it to become a mirror.
medicinal liquid formula
Silver liquid: 2500 ml of distilled water (cold water is also available), 25 grams of silver nitrate, 18.5 ml of ammonia (until it is clarified by chemical reaction).
Reducing solution: 2500ml of distilled water (cold water is also available), 25g of potassium sodium tartrate, the upper liquid is heated to clarify and then 0.5% silver nitrate is added, and the liquid medicine is kept filtered for later use.
Gelatin liquid: 1000ml of water, 10g of gelatin, steamed in water.
Iron Red Primer and an appropriate amount of banana water solution.
The imaging principle of the mirror
Whether it is a flat mirror or a non-flat mirror (concave mirror or convex mirror), the light will be reflected by the mirror in accordance with the law of reflection, and the reflected light can form vision in the retina after entering the eye. On a flat mirror, when a parallel beam of light hits the mirror, the whole body will change its direction in a parallel mode, and the image at this time is the same as the image seen by the eye.