Rare earth
Encyclopedia
Rare earth may refer to:
- Rare earth elementRare earth elementAs defined by IUPAC, rare earth elements or rare earth metals are a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides plus scandium and yttrium...
s, a group of elements on the periodic table - Rare earth mineral, a mineral substantively composed of these elements
- Rare-earth magnetRare-earth magnetRare-earth magnets are strong permanent magnets made from alloys of rare earth elements. Developed in the 1970s and 80s, rare-earth magnets are the strongest type of permanent magnets made and have significant performance advantages over ferrite or alnico magnets...
, a type of magnet that employs rare earth elements to increase effectiveness - Rare Earth hypothesisRare Earth hypothesisIn planetary astronomy and astrobiology, the Rare Earth hypothesis argues that the emergence of complex multicellular life on Earth required an improbable combination of astrophysical and geological events and circumstances...
, the theory that the development of life is exceptionally rare - Rare Earth (band)Rare Earth (band)Rare Earth is an American rock band affiliated with Motown's Rare Earth record label , who prospered in 1970-1972. Although not the first white band signed to Motown, Rare Earth was the first big hit-making act signed by Motown that consisted only of white members...
, the American musical group - Rare Earth Records, a subsidiary of Motown Records which produced rock music