Radioactivity, rabin-rai, online lissafi - damar yin lissafi adadin sauran rediyoaktif abu da kuma yawan sauran abu daga farko adadin ga wani lokaci a sakamakon rabi -life.
Sanadin motsi makamashi dabara kalkuleta
Lissafi sanadin motsi makamashi na motsi jiki, shi taro da gudu.