Henry Moseley

Henry Gwyn Jeffreys Moseley (23 November 1887-10 August 1915) was a British physicist. The main contribution of the scientific justification is the concept of atomic number, advanced chemistry.


Moseley was born in Weymouth, England, 1887. In 1906 he entered Trinity College University of Oxford, and selulusnya from there move on to Manchester University to work with Ernest Rutherford. During the early years in Manchester, he has a full teaching hours, but after a year he was released from teaching duties and began full research.

In 1913, using X-ray spectrum obtained from the diffraction in crystals, he found a systematic relationship between wavelength and atomic number, Moseley's law. Previously, the number of atoms has been considered as an arbitrary number, based on the order of atomic weight, but can be changed if necessary (for example, by Dmitri Mendeleev) to put in place a proper element in the periodic table. Moseley's discovery showed that atomic numbers but it still has a base that can be measured through experiments. In addition, Moseley showed that there is a separation in the order of the numbers 43, 61 and 75 (now known to be radioactive, does not occur naturally, in a row and prometium technetium, rhenium and the element that occurs naturally and is found in recent last). Dmitri Ivanovich Mendeleev had previously predicted technetium, and Bohuslav Brauner had predicted prometium; Moseley stated their predictions, predicting a another element that is not found, and other states there is no separation in the periodic table between aluminum and gold.

In 1914 he was stopped at Manchester to return to Oxford to continue his research, but when World War I broke out, he swerved to the job offer and enroll at the Royal Engineers. He fought at Gallipoli, where he was killed by a sniper in 1915. Many people have speculated that he could win the Nobel menstruation, but could not because the Nobel Prize can only be given to people who are still alive.

He died at the age of 27 years, Moseley can contribute greatly to the knowledge of atomic structure if he is still alive. As Niels Bohr once said in 1962, "Surely you see the work of Rutherford [the nuclear atom] was not used in earnest. We can not understand today, but Rutherford's work is not used in earnest. No it is called in anywhere. Big changes coming of Moseley. " There has been speculation since the death of Moseley in peranglah shortly after the British government banned the military scientists enrolled.

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