From WikiEducator
Jump to: navigation, search



This is an interactive science activity (ISA) that uses the Geometric Optics simulation to explore images created by a converging or convex lens. The simulation was created by the Physics Education Technology Team (PhET) at the University of Colorado.

Lenses are everywhere! We find them in our eyes, in cameras, and in a rain drop. We create images by simply opening our eyes. The human eye can be classified as a compound lens and the eye muscles contract or expand to change the focal length of this compound lens. By changing the focal length of our eye we insure that an image is formed at the optic nerve so the information can be transmitted to our brain for processing. Are you interested in how your eyes work? How about cameras, microscopes, and telescopes? Follow me to where it all starts!

Icon summary.gif What do I need?
To complete these activities you will need:
  • Pencil/pen and paper or a text editor
  • Calculator

Icon reflection.gif


The Images interactive science activity consists of:
  • An exploration of the simulation.
  • A short multichoice question to help you determine which of the main activities you should try.
  • The main activity where you will explain how an image is formed by a converging lens. It consists of:
    • Identifying the principal axis
    • Identifying the focal point
    • Identifying the focal plane
    • Conducting a simulated experiment with a light source
    • Conducting a simulated experiment with an object

How long will it take?

Clock.svg How long will it take?

These activities should take you between 30 and 45 minutes to complete. If you are far from completion after 40 minutes you should contact your teacher.