stackyFACTSProtecting luxury watch faces requires synthesizing raw gemstones in a lab. Pure aluminum oxide is melted and crystallized into transparent sapphire. Because it ranks right below diamonds on the Mohs scale, absolutely nothing you encounter in your daily life can scratch it, except perhaps your own careless diamond jewelry.
Keep exploring facts in this topic.
Technology →STACKY FOR IPHONEKeep discovering with Stacky. Interesting facts in an app that is always within reach.
Humanity somehow figured out a way to sell packaged air and call it a structural material. By violently expanding polystyrene beads with blowing agents, we…
Discover more
Flatter than a pancake and infinitely more expensive. To print microscopic circuitry, raw silicon is polished to an atomic level of absolute flatness. If a…
Discover more
If you drip molten glass into cold water, it forms a tadpole shape that defies logic. The outside cools and shrinks instantly, while the inside remains hot.…
Discover more
Just when aerogel thought it was the lightest material in the room, a bunch of interconnected carbon tubes ruined its day. Aerographite is a synthetic foam…
Discover more
Trapping intense radiation is easy, but letting it out safely requires one of the most toxic metals on earth. X-ray machines generate beams that would…
Discover more
Mother Nature is messy, and perfection is suspicious. Lab-created gems are chemically identical to natural ones but lack the tiny structural defects, meaning…
Discover more