They are used in LASERs (Light Amplification Stimulated Emission of Radiation)
some kind of rock
This element is thorium.
acrylic ruler acrylic ruler
James Watt.
the type of technology they used is axes bows spears and other stuff.
i wish i knew i need it for a project but i would say the foundations of buildings
Egyptians
Jewelry-especially rings, earrings,and pendants.
Jewelry making (including watchmaking)Scientific jobs using Ruby lasersIndustrial rubies are used as an abrasive
is aquamarine used for anything other than jewelry
Rubies are used in jewelry, and in industrial work. Depends on the quality of the stone or stones.
Rubies come in pinkish red or deep, rich red color and are one of the precious stones. They are used in rings, earrings, necklaces and bracelets and are sometimes also used to protect from any illnesses.
They are also used for cutting glass
Rubies tend to be valuable because they're rarer gems and part of the four precious stones. They're often used to make beautiful jewelry, and genuine ruby can be difficult to find.
Since rubies are red, they are used in lasers.
The most common use for rubies is jewelry—stunning jewelry! However, both natural and synthetic rubies are used in a variety of applications—such as watchmaking, medical instruments, and lasers—because of their incredible strength and red fluorescence.
They are cleaned and graded. Those of high enough quality are polished and cut to make jewelry. Others are used in industrial situations.