written by Andrew Duffy and Mario Belloni

The Find the Focal Length JavaScript Model shows how a spherical mirror reflects the rays from a point source.  The Model specifically asks the user to determine the focal length of the mirror. There are at least 4 different ways to find f.

The Find the Focal Length JavaScript Model was developed using the Easy Java/JavaScript Simulations (EjsS) modeling tool. You can modify this simulation if you have Easy Java/JavaScript Simulations (EjsS) version 5.2 or above installed by downloading and importing the zip file into EjsS.

• Download ejss_model_spherical_mirrorJS.zip - 166kb Compressed File

Published June 20, 2016
Last Modified June 20, 2016

ePub version of the JS Model

• Download ejss_find_focal_length.epub - 207kb EPub Document

Released under a Creative Commons Attribution-Noncommercial 3.0 license.

Published June 20, 2016
Last Modified July 28, 2018

This file has previous versions.

Source Code for the Find the Focal Length JS Model program.

• Download ejss_src_spherical_mirrorJS.zip - 67kb Compressed File

Released under a This material is released under the Creative Commons Attribution-Noncommercial 3.0.

Published June 20, 2016
Last Modified June 20, 2016