Home > Terms > Spanish, Latin American (XL) > termoluminiscencia (TL)

termoluminiscencia (TL)

A radiometric dating method based on the fact that trace amounts of radioactive atoms, such as uranium and thorium, in some kinds of rock, soil, and clay produce constant low amounts of background ionizing radiation. The atoms of crystalline solids, such as pottery and rock, can be altered by this radiation. Specifically, the electrons of quartz, feldspar, diamond, or calcite crystals can become displaced from their normal positions in atoms and trapped in imperfections in the crystal lattice of the rock or clay molecules. These energy charged electrons progressively accumulate over time. When a sample is heated to high temperatures in a laboratory, the trapped electrons are released and return to their normal positions in their atoms. This causes them to give off their stored energy in the form of light impulses (photons). This light is referred to as thermoluminescence (literally "heat light"). A similar effect can be brought about by stimulating the sample with infrared light. The intensity of thermoluminescence is directly related to the amount of accumulated changes produced by background radiation, which, in turn, varies with the age of the sample and the amount of trace radioactive elements it contains.

0
Pridėti prie mano aiškinamojo žodyno

Ką norite pasakyti?

Norėdami skelbti įrašus diskusijose, turite prisijungti.

Terms in the News

Featured Terms

Thuy Do
  • 0

    Terms

  • 0

    Aiškinamieji žodynai

  • 0

    Followers

Pramonės šaka / sritis: Zoology Category: Zoological terms

phylum placozoa

Macroscopic, flattened marine animals, composed of ventral and dorsal epithelial layers enclosing ...

Thuy Do
  • 0

    Terms

  • 0

    Aiškinamieji žodynai

  • 0

    Followers

Pramonės šaka / sritis: Zoology Category: Zoological terms

phylum cnidaria

Cnidarians. Hydras, hydroids, jellyfish, sea anemones, and corals. Free-swimming or sessile, with ...

qys1978
  • 0

    Terms

  • 1

    Aiškinamieji žodynai

  • 0

    Followers

Pramonės šaka / sritis: Accounting Category: Auditing

share a term with millions

Share a term with millions of users around the world and increase your online visibility.Share a ...

Bob
  • 0

    Terms

  • 1

    Aiškinamieji žodynai

  • 5

    Followers

Pramonės šaka / sritis: Plants Category: Trees

oak

Genus native to the Northern Hemisphere with spirally arranged leaves, catkins for flowers and ...

Bagar
  • 0

    Terms

  • 64

    Aiškinamieji žodynai

  • 6

    Followers

Pramonės šaka / sritis: Geography Category: Geography

Everest

The last but not least mount Everest. The Earth's highest mountain, with a peak at 8,848 metres ...

David Parkin
  • 0

    Terms

  • 1

    Aiškinamieji žodynai

  • 36

    Followers

Pramonės šaka / sritis: Plants Category: General plants

aglaonema

Genus of about 20 species of usually rhizomatous, evergreen perennials from tropical forest in Asia. ...

Aidan Teare
  • 0

    Terms

  • 0

    Aiškinamieji žodynai

  • 6

    Followers

Pramonės šaka / sritis: Science Category: General science

Robojelly

Robojelly is a hydrogen-powered robot desgined in the United States that moves through the water ...

  • 0

    Terms

  • 0

    Aiškinamieji žodynai

  • 1

    Followers

Pramonės šaka / sritis: People Category: Entrepreneurs

Ferdinand Porsche

Ferdinand Porsche (3 September 1875 – 30 January 1951) was an Austrian-German automotive engineer ...

  • 0

    Terms

  • 40

    Aiškinamieji žodynai

  • 4

    Followers

Pramonės šaka / sritis: Broadcasting & receiving Category: News

Marzieh Afkham

Marzieh Afkham, who is the country’s first foreign ministry spokeswoman, will head a mission in east ...

  • 0

    Terms

  • 0

    Aiškinamieji žodynai

  • 1

    Followers

Pramonės šaka / sritis: Accounting Category: Auditing

define1

Share a term with millions of users around the world and increase your online visibility.Share a ...

Featured blossaries

Works by Da Vinci

Kategorija: Arts   3 20 Terms

Labud Zagreb

Kategorija: Business   1 23 Terms