The origins of Electron Microscopy in North America at the University of Toronto

1992 ◽  
Vol 50 (1) ◽  
pp. 2-3
Author(s):  
John H. L. Watson
Keyword(s):  
Electron Microscopy ◽  
North America ◽  
University Of Toronto ◽  
The University

Introductory Remarks

1978 ◽  
Vol 36 (3) ◽  
pp. 3-3
Author(s):  
G.T. Simon
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
North America ◽  
International Congress ◽  
Historical Account ◽  
University Of Toronto ◽  
Good Story ◽  
Symbolic Summation ◽  
The University

Forty years ago in the University of Toronto, a group of young physicists constructed the first electron microscope in North America. With Toronto as the host for the 9th International Congress on Electron Microscopy in 1978, it is an unique opportunity to commemorate this Canadian achievement. In the summer of 1977, Cecil Hall, who was involved in this achievement, wrote in a letter about this commemoration: “It is only a ceremony, of course, a symbolic summation to a story that many of us know. It is a good story”. That it is more than a “good story” became clear while material was being gathered to write the historical account of the construction of the Toronto microscope.

A multi-vectored scholar for a multi-vectored era: Paul Robert Magocsi

2011 ◽  
Vol 39 (1) ◽  
pp. 95-104 ◽  
Author(s):  
Taras Kuzio
Keyword(s):  
North America ◽  
Great Contribution ◽  
Academic Institutions ◽  
University Of Toronto ◽  
The University

Magocsi has held the Chair of Ukrainian Studies at the University of Toronto for three decades during which he has devoted himself to both Ukrainian and Rusyn history. Critics of Magocsi, particularly in the Ukrainian diaspora in North America, focus on his Rusyn publications while ignoring his great contribution to Ukrainian history which remains unparalleled among other Western historians of Ukraine and other Chairs of Ukrainian History and academic institutions.

The 1-MeV Electron Microscope Installation at the University of Colorado

1973 ◽  
Vol 31 ◽  
pp. 8-9 ◽  
Author(s):  
Mircea Fotino
Keyword(s):  
Electron Microscopy ◽  
Developmental Biology ◽  
Transmission Electron Microscopy ◽  
Electron Microscope ◽  
National Institutes Of Health ◽  
Experimental Program ◽  
University Of Colorado ◽  
Transmission Electron ◽  
The University ◽  
Research Resources

A new 1-MeV transmission electron microscope (Model JEM-1000) was installed at the Department of Molecular, Cellular and Developmental Biology of the University of Colorado in Boulder during the summer and fall of 1972 under the sponsorship of the Division of Research Resources of the National Institutes of Health. The installation was completed in October, 1972. It is installed primarily for the study of biological materials without many of the limitations hitherto unavoidable in standard transmission electron microscopy. Only the technical characteristics of the installation are briefly reviewed here. A more detailed discussion of the experimental program under way is being published elsewhere.

Injector for a 100-500 kV Linac Electron Microscopy Source

1967 ◽  
Vol 25 ◽  
pp. 274-275
Author(s):  
John W. Coleman
Keyword(s):  
Electron Microscopy ◽  
Linear Accelerator ◽  
Beam Current ◽  
Ion Trapping ◽  
University Of Virginia ◽  
Electron Injector ◽  
Illumination System ◽  
Radio Corporation Of America ◽  
The University ◽  
Optical Integration

The injector to be described is a component in the Electron Injector-Linear Accelerator—Condenser Module for illumination used on the variable 100-500kV electron microscope being built at the Radio Corporation of America for the University of Virginia.The injector is an independently powered, autonomous unit, operating at a constant 6kV positive with respect to accelerator potential, thereby making beam current independent of accelerator potential. The injector provides for on-axis ion trapping to prolong filament lifetime, and incorporates a derived Einzel lens for optical integration into the overall illumination system for microscopy. Electrostatic beam deflectors for alignment are an integral part of the apparatus. The entire injector unit is cantilevered off a door for side loading, and is topped with a 4-filament turret released electrically but driven by a self-contained Negator spring motor.

Scanning Electron Microscopy of Fish Scales as an Adjunctive Aid in Speciation

1972 ◽  
Vol 30 ◽  
pp. 394-395
Author(s):  
Edward D. DeLamater ◽  
Walter R. Courtenay ◽  
Cecil Whitaker
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Lateral Line ◽  
Species Differences ◽  
Fish Scale ◽  
Fish Scales ◽  
Anterior Border ◽  
The University ◽  
Multiple Holes ◽  
Scanning Electron

Comparative scanning electron microscopy studies of fish scales of different orders, families, genera and species within genera have demonstrated differences which warrant elaboration. These differences in detail appear to be sufficient to act as “fingerprints”, at least, for family differences. To date, the lateral line scales have been primarily studied. These demonstrate differences in the lateral line canals; the pattern of ridging with or without secondary protuberances along the edges; the pattern of spines or their absence on the anterior border of the scales; the presence or absence of single or multiple holes on the ventral and dorsal sides of the lateral line canal covers. The distances between the ridges in the pattern appear likewise to be important.A statement of fish scale structure and a comparison of family and species differences will be presented.The authors wish to thank Dr. Donald Marzalek and Mr. Wallace Charm of the Marine and Atmospheric Laboratory of the University of Miami and Dr. Sheldon Moll and Dr. Richard Turnage of AMR for their exhaustive help in these preliminary studies.

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