Radiant Matter 1 | Nature

Radiant Matter 1 | Nature


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ABSTRACT THE velocity with which helium is cast out by radio-active bodies at the moment of change varies considerably from one element to another. Thus the radiant atoms of radium C possess


a far higher velocity than those of uranium or ionium. This fact is apparent in the greater distance to which the “ rays of the former will penetrate in air or in any other substance. The


distance traversed in air is known as the “range.” The following table shows the ranges of o rays from the various known radio-active elements. Thus we see that whereas the helium from


radium C is projected nearly 7 centimetres, that from uranium only reaches 2-7 centimetres. In the thorium series, one of the elements, thorium C, attains a range of 8'6 centimetres.


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FAQs * Contact customer support REFERENCES * From a lecture delivered before the Royal Dublin Society on February 3, by Prof. J. Joly, F.R.S. * This might, possibly, be realised by


condensing water vapour upon the ions according to the method described by C. T. R. Wilson (Proc. R. S., June, 1911). Download references RIGHTS AND PERMISSIONS Reprints and permissions


ABOUT THIS ARTICLE CITE THIS ARTICLE _Radiant Matter_ 1 . _Nature_ 87, 98–100 (1911). https://doi.org/10.1038/087098a0 Download citation * Issue Date: 20 July 1911 * DOI:


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