June 08, 2019 Filed in: Articles
Roberta Tevlin, Editor OAPT Newsletter, Teacher at Danforth CTI
We need to incorporate more diverse examples of scientists in our courses. Sara Cormier (Physics Instructor at McMaster University) and I are trying to develop resources that will help teachers to do this. (If you would like to be a part of this — please send me an email!)
I started to compile a data base of good examples when I found myself completely distracted by the work of Rosalind Franklin. Her work on the X-ray crystallography of DNA fits perfectly into a lesson about the interference of light! As well as showcasing an important female scientist, an examination of her work can deepen students’ understanding of interference patterns and it highlights a very important connection between biology, chemistry and physics. I found a couple of short videos and a really simple, cheap demo that shows why the interference pattern formed by DNA provides clear evidence of its helical structure! Read More...
May 16, 2019 Filed in: Articles
Brian Lim, Teacher Rosedale Heights School of the Arts, Toronto
“In the beginning…”
So starts one of the most famous and influential stories in Western civilization. Neil Degrasse Tyson continues the narrative this way:“...sometime between 12 and 16 billion years ago, all the space and all the matter and all the energy of the known universe was contained in a volume less than one-trillionth the size of the point of a pin. Conditions were so hot, the basic forces of nature that collectively describe the universe were unified. For reasons unknown, this sub-pin-pint-size cosmos began to expand…”
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