Unit 15: Waves and Optics – Geometric Optics

Snowflakes are beautiful. Light enters them and refracts (bends), separating the sun’s visible “white” light spectrum into rainbows of colors, while the snowflake also reflects glints of light twinkling back into our eyes. We will explore refraction of light through human-manufactured devices called lenses, and we will also take a look at reflection of light from mirrors.

This is a snowflake. No, really. It’s a snowflake! Click the picture to find out more.


Full teacher notes available by request via email to Michelle.Burgess@avonlakecityschools.org
from an official educational institution email address.


  •  PhET Geometric Optics will help you experiment with lenses to create virtual and real images.
  • Fun video about refraction and total internal reflection:

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.