Rare earth

21問 • 1年前

問題一覧

use to make light alloys for the aerospace industry, as radioactive tracer, and in lamps

Scandium

used in _____ aluminum garnet lasers, as a red phosphor, in superconductors, in fluorescent tubes, in LEDs, and as a cancer treatment

Yttrium

Use to make high refractive index glass, camera lenses, ans catalysts

Lanthanum

Use to impart a yellow color to glass, as a catalyst, as a polishing powder, and to make flints

Cerium

Used in lasers, arc lighting, magnets, flint steel, and as glass colorant

Praseodymium

Used to impart violet color to glass and ceramics, in lasers, magnets, capacitors, and electric electrons

Neodymium

Used in luminous paint and nuclear batteries

Promethium

Used in lasers, rare earth magnets, masers, nuclear reactor control rods

Samarium

Used to prepare red and blue phosphors, in lasers, in flourescent lamps, and as an NMR relaxant

Europium

Used in layers, X-ray tubes, computer memory, high refractive index glass, NMR relaxation, neutron capture, MRI contrast

Gadolinium

Use in green phosphors, magnets, lasers, flourescent lamps, magnetostrictive alloys, and sonar systems

Terbium

Used in hard drive disks, magnetostrictive alloys, lasers, and magnets

Dysprosium

Use in layers, magnets, and calibration of spectrophotometers

Holmium

Used in vanadium steel, infrared lasers, and fiber optics

Erbium

Used in lasers, metal hide lamps, and portable x-ray machine

Thulium

Used in infrared lasers, stainless steel, and nuclear medicine

Ytterbium

used in positron emission tomography (PET) scans, high refractive index glass, catalysts, and LEDs

Lutetium

Boiling point of Lithium

1342

boiling point of silver

2162

Boiling point of Aluminum

2519

Boiling poit of Uranium

4131

Mineral Processing

Mineral Processing

Chemical Composition

Chemical Composition

Mineral Physical Properties

ユーザ名非公開 · 52問 · 1年前

Mineral Physical Properties

Petrology

Petrology

Coal

Coal

Structural Geology

Structural Geology

Economic Geoglogy

Economic Geoglogy

Surveying

Surveying

Ecology

Ecology

Prospecting And Exploration

ユーザ名非公開 · 83問 · 1年前

Prospecting And Exploration

83問 • 1年前

ユーザ名非公開

Mine safety and Health

ユーザ名非公開 · 48問 · 1年前

Mine safety and Health

Ventilation

Ventilation

Bomasang Magazine

Bomasang Magazine

Mining Methods

Mining Methods

Mining 3

Mining 3

問題一覧

use to make light alloys for the aerospace industry, as radioactive tracer, and in lamps

Scandium

used in _____ aluminum garnet lasers, as a red phosphor, in superconductors, in fluorescent tubes, in LEDs, and as a cancer treatment

Yttrium

Use to make high refractive index glass, camera lenses, ans catalysts

Lanthanum

Use to impart a yellow color to glass, as a catalyst, as a polishing powder, and to make flints

Cerium

Used in lasers, arc lighting, magnets, flint steel, and as glass colorant

Praseodymium

Used to impart violet color to glass and ceramics, in lasers, magnets, capacitors, and electric electrons

Neodymium

Used in luminous paint and nuclear batteries

Promethium

Used in lasers, rare earth magnets, masers, nuclear reactor control rods

Samarium

Used to prepare red and blue phosphors, in lasers, in flourescent lamps, and as an NMR relaxant

Europium

Used in layers, X-ray tubes, computer memory, high refractive index glass, NMR relaxation, neutron capture, MRI contrast

Gadolinium

Use in green phosphors, magnets, lasers, flourescent lamps, magnetostrictive alloys, and sonar systems

Terbium

Used in hard drive disks, magnetostrictive alloys, lasers, and magnets

Dysprosium

Use in layers, magnets, and calibration of spectrophotometers

Holmium

Used in vanadium steel, infrared lasers, and fiber optics

Erbium

Used in lasers, metal hide lamps, and portable x-ray machine

Thulium

Used in infrared lasers, stainless steel, and nuclear medicine

Ytterbium

used in positron emission tomography (PET) scans, high refractive index glass, catalysts, and LEDs

Lutetium

Boiling point of Lithium

1342

boiling point of silver

2162

Boiling point of Aluminum

2519

Boiling poit of Uranium

4131