9464

Numerical Iso-Optic Curve of the Ellipse

This Demonstration shows how the iso-optic curve of the ellipse can be approximated by the iso-optic curve of the polygon circumscribing it.

SNAPSHOTS

  • [Snapshot]
  • [Snapshot]
  • [Snapshot]

DETAILS

The iso-optic of a curve is formed from the points from which the given curve subtends the angle . This Demonstration is based on two previous ones (see the first two Related Links), but here we approximate the ellipse with polygons as a way to find its iso-optic curve.
You can chose some discrete values of from the range between and . Using the other controls, you can set the semi-minor and semi-major axes of the ellipse between and and the angle between and . The ellipse is green and the inscribed polygon is blue (except in the case ). The red domains show the points from which the polygon (and also the ellipse) subtends an angle greater than or equal to and its boundary are the points from which the ellipse subtends the angle . We have already proved that this curve is the correct solution of this problem.
The snapshots show some general situations, except the second one, which shows that if we set large enough, the iso-optic curve of the polygon (which is the boundary of the red domain) is almost the iso-optic curve of the ellipse.

PERMANENT CITATION

    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.









 
RELATED RESOURCES
Mathematica »
The #1 tool for creating Demonstrations
and anything technical.
Wolfram|Alpha »
Explore anything with the first
computational knowledge engine.
MathWorld »
The web's most extensive
mathematics resource.
Course Assistant Apps »
An app for every course—
right in the palm of your hand.
Wolfram Blog »
Read our views on math,
science, and technology.
Computable Document Format »
The format that makes Demonstrations
(and any information) easy to share and interact with.
STEM Initiative »
Programs & resources for
educators, schools & students.
Computerbasedmath.org »
Join the initiative for modernizing
math education.
Powered by Wolfram Mathematica © 2014 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS Give us your feedback
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to Mathematica Player 7EX
I already have Mathematica Player or Mathematica 7+