How was ancient glass made?

More than 3000 years ago, a European Phoenician merchant ship loaded with crystal mineral "natural soda" sailed on the Berus River on the Mediterranean coast. The merchant ship ran aground because of the low tide.

So the crew boarded the beach one after another. Some crew members also carry cauldrons and firewood, and use a few pieces of "natural soda" as the support of the cauldron to cook on the beach.

After the crew finished eating, the tide began to rise. They were about to pack up their things and go on sailing when someone shouted, "Come and see, there are some glittering and translucent things on the sand at the bottom of the pot!" " "

The crew took these shiny things to the ship to study them carefully. They found some quartz sand and melted natural soda sticking to these shiny things. It turns out that these sparkling things are the crystals produced by the chemical reaction between natural soda used as a pot support and quartz sand on the beach when they cook. Later, the Phoenicians mixed quartz sand with natural soda and melted it in a special furnace.

In the 4th century AD, the Romans began to apply glass to doors and windows. By 129 1, the glass manufacturing technology in Italy has been very developed.

"China's glass manufacturing technology must not be leaked out, and all the craftsmen who make glass are concentrated to produce glass!"

In this way, Italian glass workers were sent to an isolated island to produce glass, and they were not allowed to leave the island for life.

1688, a man named Naff invented the process of making large pieces of glass, and since then glass has become an ordinary article.