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Gadolinium , Gadolinium (revised)
Note: This article, originally published in 1998, was updated in 2006 for the eBook edition.
Overview
Gadolinium was named for F… Background Radiation , Background radiation
Ionizing radiation has the potential to kill cells or cause somatic or germinal mutations. It has this ability by virtue of its… Hollow Earth , Edmund Halley (1656–1742) is best known for having calculated the orbit of a comet that passes by Earth every 76 years. The comet known as Halley's m… Asthenosphere , The asthenosphere is the layer of Earth situated at an average depth of about 62 mi (about 100 km) beneath Earth's surface. It was first named in 191… Holmium , Holmium (revised)
Note: This article, originally published in 1998, was updated in 2006 for the eBook edition.
Overview
Holmium occurs in Row 6 of th… Rammed Earth , rammed. Structure, e.g. wall, made by beating down earth contained between formwork or shuttering with a heavy implement. If cement and other strengt…
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NEARBY TERMS
geochemical anomaly