1. Light in a Straight Line (from Thursday) https://www.youtube.com/watch?v=4xq6TTsyyOI

2. LIGHT The Wave-Particle Duality

3. Definition of a Particle ■It is a thing ■Properties –Can be counted –Has a definite mass, position and velocity –Adheres to Newton’s Laws of Motion

4. Definition of a Wave ■It is a disturbance ■Properties: –You can measure its frequency and wavelength –It experiences interference

5. Light Treated as a Particle ■Light is a stream of particles called photons. ■The energy of light is quantized.

6. Links- Light as a Particle ■Michio Kaku: Photon Engines –https://www.youtube.com/watch?v=F_QsvbDkhnghttps://www.youtube.com/watch?v=F_QsvbDkhng

7. Light Treated as a Wave ■Light oscillates like any wave would ■Light interferes with other waves of light

8. Links- Light as a Wave ■Brian Greene: The Double Slit Experiment –https://www.youtube.com/watch?v=YoQYnhHQ95Uhttps://www.youtube.com/watch?v=YoQYnhHQ95U ■Brian Greene: The Double Slit Experiment –https://phet.colorado.edu/sims/html/wave-on-a-string/latest/wave-on-a- string_en.htmlhttps://phet.colorado.edu/sims/html/wave-on-a-string/latest/wave-on-a- string_en.html

9. Exit Slip: Complete the following sentences in your own words. 1.Light is a wave because… 2.Light is a particle because…