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ID number:679409
 
Author:
Evaluation:
Published: 19.03.2007.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Mēs ar radioaktivitāti saskaramies itin bieži, pat pašiem to nemanot. Piemēram, ja augsne ievada fosfora mēslojumu, kas satur nedaudz radiācijas fosfora izatopu 32/15 P (Atoms kam ir vienāds kodola lādiņš, bet atšķirīgas atommasas, sauc par izotopiem), tad var izpētīt kā fosfors nokļūst atsevišķu augu daļās un tajās uzkrājās. Šo metodi izmanto fotosintēzes un augu vielmaiņas pētīšanai.
Arī medicīnā plaši izmanto radioaktīvo fosforu izotopu, kura pussabrūkšanas periods ir 14 diennaktis.…

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