Gummy Bears and Lasers:
Experiments with Light Absorption, Scattering and Total Internal Reflection
The kit, experiments and videos develop an in-class experiment and discussion on how light interacts with different materials and how those interactions enable fiber optics and lead to different absorption of light by different materials.
The light absorption and reflection effects demonstration is also linked to a medical application of light being actively researched at UHN and the University of Toronto in which light is guided to a tumour with fiber optics and where the light is absorbed the tumour is destroyed.
The lesson is primarily targeted at high school level students, but could also be applied at earlier grades. To obtain a kit with the lasers and other materials for the lesson, please contact Chris McFadden at firstname.lastname@example.org; alternate contacts are email@example.com or firstname.lastname@example.org.
Lesson Plan and Handouts
Acknowledgements and Funding Support
This lesson and all the associated materials were created by Chris McFadden, who is both a high school teacher in the Durham District School Board and a graduate student (and member of the FullMonte team) in the Department of Medical Biophysics at the University of Toronto. Funding support was provided by the Ontario Research Foundation. We are thankful to Shawn Brooks of the University of Toronto Schools for facilitating and hosting pilots of the lesson.