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ID number:860466
 
Evaluation:
Published: 23.04.2021.
Language: Latvian
Level: Elementary school
Literature: 5 units
References: Not used
Extract

Radioaktivitāti atklāja 1896. gadā franču
fiziķis A. Bekelers.
Viņš pētīja urāna sāļu luminiscenci un
izvirzīja hipotēzi, ka urāna sāļi pēc
apgaismošanas (atomu ierosināšana ar
gaismas iedarbību) rada gan redzamo, gan
rentgenstariem līdzīgo neredzamo
starojumu.…

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