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ID number:409051
 
Evaluation:
Published: 24.03.2009.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Radioaktivitāte ir dažu nestabilu kodolu īpašība, saistībā ar kuru tie spontāni sabrūk, radot citu elementu kodolu un izstarojot radioaktīvo starojumu. Šis process tiek apzīmēts kā radioaktīvā sabrukšana. Radioaktīvos procesos izdalīto enerģiju mēra elektrovoltos(eV).
Tā ievadīja fiziku jaunā ērā, jo norādīja, ka atoms un atoma kodols ir sarežģīta sistēma ar savu struktūru un nebūt nav nedalāms, kā domāja agrāk.

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