Authentic Lessons for 21st Century Learning
This is the fifth and final lesson in the Diffraction Unit. In this lesson, students will apply the Doppler Effect to electromagnetic waves, and examine redshift as evidence of the expanding universe. Read more »
Created by: Chris Yohn
Date Updated: September 1st, 2023
Redshift and the Expanding Universe
In this lesson, students observe standing waves in strings, rods, pipes, and hoops through videos and teacher demonstrations. Students investigate the ‘particle in a box’ problem using a PhET simulation, which presents the electron as a wave with discrete wavelengths. Students investigate wave functions... Read more »
Created by: Chris Yohn
Date Updated: August 22nd, 2023
Wave Properties of Particles
In this unit, students will learn that electrons in atoms and molecules absorb visible light. When light passes through various media and then through a diffraction gradient, it produces absorbance spectra. The produced absorption spectra are unique to the elements that interact with the light. These... Read more »
Created by: Chris Yohn
Date Updated: August 10th, 2023
Absorption Spectra
