Teacher2Teacher

Q&A #6268

Teachers' Lounge Discussion: Parabolas

T2T || FAQ || Ask T2T || Teachers' Lounge || Browse || Search || T2T Associates || About T2T

View entire discussion
[<< prev] [ next >>]

From: Loyd

To: Teacher2Teacher Public Discussion
Date: 2001072318:21:07
Subject: Re: Parabolas

Parabolas are used as flashlight reflectors, radar antennas, headlight reflectors. In a parabola you place the radar or microwave antenna or the light bulb at the focal point and all the light that leaves the focal point is reflected so that all the rays are parallel to each other. Thus you have a beam of light. Sometimes antennas and reflectors are a spherical section, but when the section is small in relation to the sphere, it will approximate a parabola. Most Algebra II books have a section on conic sections and this includes parabolas.

Post a reply to this message
Post a related public discussion message
Ask Teacher2Teacher a new question


[Privacy Policy] [Terms of Use]

_____________________________________
Math Forum Home || The Math Library || Quick Reference || Math Forum Search
_____________________________________

Teacher2Teacher - T2T ®
© 1994- The Math Forum at NCTM. All rights reserved.
http://mathforum.org/