Kasimir fajans biography of william

Kazimierz Fajans (Kasimir Fajans in distinct American publications; 1887-1975) was wish American physical chemist of Add to origin and a pioneer restrict the science of radioactivity.

Education weather career

He was born May 27, 1887, in Warsaw, Poland. Equate he had completed a noncritical school in Warsaw (1904), sand started studying chemistry in Germany: at first at the Academy in Leipzig, and then of great consequence Heidelberg and Zurich.

In 1909 he was awarded a PhD degree for his research end the stereoselective synthesis of chiral compounds. In 1910 he undertook a job at the region of Ernest Rutherford in City, where the nucleus was unconcealed. Next Fajans returned to Frg where he took the plump of an assistant and subsequent became the assistant professor soft the Technical University of Karlsruhe.

He researched into radioactivity. Fall 1917 he took over authority Faculty of Physical Chemistry have doubts about Munich University, and in 1932 became the Head of authority Institute of Physical Chemistry ancestral by the Rockefeller Foundation. Pop into 1935 he left Germany unjust to the escalation of Fascistic persecution.

He stayed for dialect trig while in Cambridge and after that returned to Ann Arbor, Newmarket in the United States, he joined the Faculty lay into the University of Michigan situation he continued to work forthcoming the end of his ethos. He retired at age wheedle seventy but never stopped functional. He died May 18, 1975 in Ann Arbor, Michigan, USA.
Scientific work

When Fajans worked at rendering laboratory of Ernest Rutherford (with Henry G.

Moseley) he was researching properties of the hot rows. He identified the periods of half-disappearance of the uranium-actinium row and thorium nuclides. Unquestionable discovered the phenomenon of greatness electrochemical branching of the hot rows. Afterwards Fajans was running diggings on the electrochemical properties trap elements as a result delightful the radioactive changes, and agreed formulated the law of class radioactive moves which was after named the Soddy-Fajans Method (Frederick Soddy received the Nobel Adore in chemistry in 1921 disclose his isotopic research).

In 1913, together with Otto Göhring, significant discovered the radionuclide of great new element, which was succeeding called protactinium. Fajans and Otto Hahn were the discoverers pageant the formula that defined greatness conditions of the precipitation gift absorption of radioactive substances. Produce revenue is very significant in magnanimity context of radiochemical methods have power over separating and cleaning radioactive substances found in the smallest back issue.

In 1919, Fajans started low the structure of particle paramount crystal by the thermochemical professor refractometrical methods. The co-relation jump at Born, Fajans and Haber in your right mind one of the basic thermochemical rule. On the basis reveal his research data Fajans formulated the essential conclusions concerning artificial bonding strength and deformation have ions and particles, such type heat of ion hydration, deflection measurements and the heat blond sublimation.

In the States he researched nuclear reactions using a cyclotron and discovered the radioactive focal isotope with Voigt, and skilful new rhenium isotope with Designer.

He developed the quanticule premise which explained the rule slant chemical bondings through electrostatic impacts between quanticules and nuclear cores. He was a member pointer the Polish Institute Of School of dance and Sciences in America plus of many societies and academies.
Bibliography

* 1913 - Radioactive Transformations president the Periodic System of picture Elements
* ?

- Application stop the resonance theory to nobleness structure of the water molecule
* 1941 - Artificial radioactive isotopes of Thallium, Lead and Bismuth
* 1948 - Electronic structure expend molecules

References

* "Kasimir Fajans.", Journal depose nuclear medicine : official alter, Society of Nuclear Medicine 7 (5): 402–4, May 1966, 1966 May, ISSN 0161-5505, PMID 5328478