ChaneyPres2

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Published on October 16, 2007

Author: Alohomora

Source: authorstream.com

1902 Nobel Prize in Physics:  1902 Nobel Prize in Physics James Chaney Stephen F Austin State University 1902 Nobel Prize:  1902 Nobel Prize Won by Hendrik Antoon Lorentz and Pieter Zeeman "in recognition of the extraordinary service they rendered by their researches into the influence of magnetism upon radiation phenomena“ observed that an intense magnetic field would split single spectral lines into three components Hendrik Antoon Lorentz:  Hendrik Antoon Lorentz Born July 18, 1853 in Arnhem, Netherlands Lorenz-Lorentz formula: relationship between velocity of light in a medium and the density and composition of that medium Lorenz Transformation: conversion of two different observer’s measurements of space and time Pieter Zeeman:  Pieter Zeeman Born May 25, 1865 at Zonnemaire, Netherlands Did work dealing with optical phenomena and propagation and absorption of electrical waves in fluids Zeeman effect Mass spectrometry Zeeman Effect:  Zeeman Effect Without a magnetic field, configurations a, b, and c have the same energy, as do d, e, and f. A magnetic field splits the energy levels: a line produced by a transition from a, b, or c to d, e, or f will now be several different lines between different combinations of a, b, c and d, e, and f Zeeman Effect:  Zeeman Effect Not all transitions are possible: governed by transition rules The distance between the Zeeman sublevels is proportional to the magnetic field This allows astronomers to use the Zeeman effect to measure the magnetic field of stars. The importance of Zeeman’s discovery:  The importance of Zeeman’s discovery The Zeeman Effect confirmed Lorentz’s prediction about the polarization of light emitted in the presence of an electric field “..its immense importance lies in the fact that even to this day it offers the ultimate means for revealing the intimate structure of the atom and the nature and behavior of its components. It still serves as the final test in any new theory of the atom.” -Nobel Lectures Applications of the Zeeman Effect:  Applications of the Zeeman Effect Nuclear magnetic resonance Electron spin resonance spectroscapy Magnetic resonance imaging (MRI) Mössbauer spectroscapy References:  References http://nobelprize.org/ http://csep10.phys.utk.edu/astr162/lect/light/zeeman-split.html http://en.wikipedia.org/wiki/Main_Page

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