Comments on: Parabolas and focal points

By: Dave Richeson

Dave Richeson — Sun, 07 Jun 2009 11:10:54 +0000

Thanks, that’s what I was afraid of.

By: munshi2

munshi2 — Sun, 07 Jun 2009 08:29:17 +0000

Sorry, it’s WordPress, not WordPress.com. Sime S.

By: Sime S.

Sime S. — Sat, 06 Jun 2009 20:00:07 +0000

Yes, the GeoGebra applet can be embedded in WordPress. I suggest you look at the blog colleague Jon Ingram http://joningram.org. All the best.

By: Parabolas and focal points II « Division by Zero

Parabolas and focal points II « Division by Zero — Fri, 05 Jun 2009 15:14:37 +0000

[...] and focal points II Yesterday I wrote about parabolic mirrors. I pointed out that parallel rays hitting a parabola typically do not reflect back to a focal [...]