Adjective:

रेडियम-धर्मी, रेडियो-ऐक्तिव,

radioactive शब्द के हिंदी अर्थ का उदाहरण:

रेडियम-धर्मी 40 की प्रबलता।

लगभग सभी पृथ्वी के वायुमंडल में आर्गन के रेडियम-धर्मी आर्गन-40, पृथ्वी की पपड़ी में पोटेशियम-40 के क्षय से प्राप्त होता है।

জজজ

radioactive's Usage Examples:

After removing the uranium, it was found that the bismuth separated with a very active substance - polonium; this element was afterwards isolated by Marckwald, and proved to be identical with his radiotellurium; that the barium could be separated with another active substance - radium; whilst a third fraction, composed mainly of the rare earths (thorium, 'c.), yielded to Debierne another radioactive element - actinium, which proved to be identical with the emanium of Giesel.

Helium is relatively abundant in many minerals, all of which are radioactive, and contain uranium or thorium as important constituents.

There is more radium than any other radioactive element, but its excessive rarity may be gauged by the facts that Mme.

After the discovery of the radioactive properties of uranium by Henri Becquerel in 1896, it was noticed that some minerals of uranium, such as pitchblende, were more active than the element itself, and this circumstance suggested that such minerals contained small quantities of some unknown substance or substances possessing radioactive properties in a very high degree.

In 1901 Elster and Geitel found that a radioactive emanation is present in the atmosphere.

and Mme Curie subjected a large amount of pitchblende to a laborious process of fractionation, with the result that in 1898 they announced the existence in it of two highly radioactive substances, polonium and radium.

Strutt has found that phosphatized nodules and bones are rich in radioactive constituents, and has brought this into relation with their geological age.

Radioactive properties have also been ascribed to other elements, e.g.

Another radioactive substance - ionium - was isolated from carnotite, a uranium mineral, by B.

In this case too it is associated with radioactive matter, which is almost ubiquitous.

Synonyms:

hot,

Antonyms:

cold, nonradioactive,