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Demonstrating Polarized Interference

Roberta Tevlin, OAPT Editor, Teacher Danforth CTI
Rolly Meisel, OAPT Photographer

The interference of light is a very important concept in senior high school physics and has been for a long time. The polarization of light used to be a minor topic but has become more and more important over the last couple of decades because of its use in LCD screens and 3-D movies and because it is possible to get a cheap class set of polarized filters. This article describes a demonstration that combines polarization and interference. Read More...

REVIEW: Three Short Videos of the Double Slit Experiment

Roberta Tevlin, OAPT Editor, Teacher Danforth CTI

The double-slit experiment is one of the strongest pieces of evidence for the wave nature of light and it is also the best place to start to explore the key concepts of quantum physics. By this point, most teachers in Ontario are familiar with the great, free teaching resource from The Perimeter Institute of Theoretical called The Challenge of Quantum Reality. If you haven’t got yours yet, you should! Three short, on-line videos are now available as an addition to the resource. Read More...

An Experiment Involving Heisenberg’s Uncertainty Principle

James Ball, OAPT Membership Chair, Physics Teacher, John F. Ross C.V.I.

The Heisenberg Uncertainty Principle is a very abstract concept for most high school students and teachers. This lab activity is a simple variation of a single slit diffraction experiment. It clearly shows that defining the location of a photon (by passing it through a slit) increases our uncertainty about its momentum. Read More...

Review: Teaching Quantum Technology Workshop at IQC

Shawn Brooks, Contest Manager, Teacher at University of Toronto Schools

I attended the Teaching Quantum Technology (TQT) workshop on Dec. 5th and 6th and left with 12 activities that I could use right away in my classes. Now, the challenge for me is: how can I fit these activities into my grade 11 or grade 12 physics courses? Read More...

Lasers: A Solution looking for a Problem

Roberta Tevlin, OAPT Editor, Teacher Danforth CTI
Edited by Margaret Scora

Lasers are quantum light sources and they are everywhere. But what is quantum about them? The PhET simulation is a great tool to give students a feel for the quantum process called stimulated emission. Read More...
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