|Origin of Name
||From the Greek word neos, meaning new,
and didymos meaning twin
|Date and Place of Discovery
||Discovered in 1925 in Vienna, Austria
Auer von Welsbach
- It constitutes 38 ppm of earth’s crust, but is not found free in nature.
- It is found in monazite and
- It tarnishes rapidly when exposed to air.
- Welder's and glass blower's goggles
- Colors glass, ceramics and enamels
- Permanent magnets
- Predictor of earthquakes
- Solid state lasers
- Infrared radiation filtering