Since the discovery of radioactivity , man has substantially added to his natural radiation burden . रेडियों सक्रियता की खोज के कारण मानव ने विकिरणों की प्राकृतिक मात्रा में काफी वृद्धि की है .
2.
Within the area reached by direct ionising radiation , great amounts of radioactivity are induced . इस क्षेत्र में उपस्थित आयनकारी विकिरणों द्वारा प्रेरित रेडियों सक्रियता उत्पन्न की जाती है .
3.
Radioactivity occur due to atomic explosion, nuclear explosion & war explosions and natural reaction are radio active pollutants. परमाणु (Radioactive pollutants)विस्फोट तथा युद्ध विस्फोटकों (nuclear explosions)और प्राकृतिक (war explosives)प्रक्रियाओं से उत्पन्न रडून जैसे रेडियोधर्मी प्रदूषक
Meaning
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay Synonyms: radiation,
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