Lawrence Ernest Lyons 1922–2010

2016 ◽  
Vol 27 (1) ◽  
pp. 47
Author(s):  
John W. White
Keyword(s):  
Research Student ◽  
Biographical Memoir

Lawrie Lyons was a person of vision with a will to initiate and follow-through. This characteristic was evident in his scientific agenda, in his academic and Christian actions and in the care that he had for his family. These strands are inextricably woven in the texture of his life, some of which I have known since I met him as tutor before entering Sydney University in 1954—but afterwards as his research student and as a friend and collaborator. It is from these perspectives that I write this biographical memoir.

Teaching Rites of Passage: Workshop summary

1970 ◽  
Vol 5 (1) ◽  
Author(s):  
Panel II Challenges
Keyword(s):  
Rites Of Passage ◽  
Research Student ◽  
Workshop Summary ◽  
Postgraduate Research

Twelve presentations, each of around fifteen to twenty minutes, were delivered in three different panels over the two days. The first panel, entitled Challenges, brought together four papers reflecting on the experience of changing from the transition from postgraduate research student to tutoring, teaching and lecturing.

Reminiscences and discoveries, the introduction of Fourier methods into crystal-structure determination

1990 ◽  
Vol 44 (2) ◽  
pp. 257-264
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Copper Sulphate ◽  
Diffraction Grating ◽  
Alternative Explanation ◽  
Crystal Structure Determination ◽  
X Rays ◽  
Fourier Methods ◽  
Research Student

1. The nature of X-rays X-rays were discovered in 1895 by Rontgen in Wurtzburg. For the next 17 years the nature of these rays was one of the dominant questions in physics: were they particles or were they waves? W.H. Bragg, of Adelaide, found indisputable evidence that they were particles; C.G. Barkla, of Liverpool and Edinburgh, found even more indisputable evidence that they were waves. The decisive experiment was carried out by Friedrich and Knipping (1) in 1912 in Munich, under the guidance of von Laue; they passed a fine beam of X-rays through a crystal of copper sulphate, hoping that it would behave as a diffraction grating. It did! The background was emotionally described bv von Laue in 1948 (2). * W.H. Bragg had a son, W.L. Bragg, who was a research student under J.J. Thomson at Cambridge. He was, as he himself said later, rather upset that his father seemed to have been proved wrong, and he tried to think up an alternative explanation of particles travelling through tunnels in the crystal. But he soon realized that the wave explanation had to be accepted.

Sign in / Sign up

Export Citation Format

Share Document