Interesting facts about glass

The melting temperature of glass is from 300 to 2500 ⁰C, depending on the components included in its composition.

The glass contains quartz sand (about 70%), lime and soda.

Broken glass crack moves at 5000 km / h

Glass holds the record for decomposition time, which is about 1 million years.

Glass is a material that is 100% recyclable without losing quality.

Remelting glass is 40% cheaper than producing it from primary components.

You can make threads from glass, the flexibility of which will be enough for sewing fabric.

Glass is painted with metal oxides, for example, iron oxide is used to give the glass a bluish or dark red hue, a light yellow hue is achieved with uranium oxide, and violet and brown with nickel.

To create armored (bullet-proof) glass, several layers of glasses are applied on top of each other, tying them with a polymer film, then the resulting "sandwich" is heated in an oven and rolled under high pressure with a machine.

The windshield of the car does not fall to pieces due to the plastic film, as is the case with armored glass.

To make frosted glass transparent, you just need to stick transparent tape on it, the adhesive tape smooths out irregularities, as a result, the light does not scatter, but passes through ordinary glass.

Safety glass was accidentally invented by Edouard Benedictus, a French chemist in 1903, after dropping a flask of nitrocellulose. To his surprise, the glass did not shatter into shards, but only cracked slightly. This is how Benedictus brought the first windshields to life.

The first bulletproof glass was installed in 1941 in the windows of the Oval Office of the US White House.

The oldest example of glassmaking is a greenish bead 9 mm in diameter, found by Flinders Petrie near Thebes, according to scientists, its age is about five and a half thousand years. It is kept in the Berlin Museum.

In Europe in the Middle Ages, a mental disorder was widespread, in which the patient claimed to be made of glass and could break at any time. Suffering from such a disorder, for some reason it was mainly nobles, one of whom was the French king Charles VI. He categorically forbade touching himself and wore only soft, thick clothes so that he would not inadvertently "break".