IT is well known that for the excitation of the characteristic X-ray spectra of elements, an electron has first to be removed from some internal level; when this is done, an electron from an outer ...
IT was shown by Barkla and Sadler (Phil. Mag., February, 1907, and October, 1908) that many elements, when subject to a suitable beam of X-rays, emit a homogeneous beam of secondary X-rays of ...
Elements and Compounds: Understanding elements and compounds is basic knowledge to study chemistry. Elements are the basic building blocks of matter, while compounds are substances formed when two or ...
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