The following use ray tracing to find image for a point light source in a glass filled with water.

The refraction of water is assume to be 4/3 and the index refraction of glass is assumed to be 3/2.

Both of them can be modified with the sliders (index1 and index2).

yc is the location of the point source.

Click play (right triangle) to start the ray tracing.

You can drag the eye to find image at different viewing location. (Yes. it is depends on where you look at it).

Full screen applet or

Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list**Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop.** This work is licensed under a

Creative Commons Attribution 2.5 Taiwan License
- Please feel free to post your ideas about how to use the simulation for better teaching and learning.
- Post questions to be asked to help students to think, to explore.
- Upload worksheets as attached files to share with more users.

Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!