Comments on: FRESNEL LENS PARABOLIC MIRROR FOCAL POINT FOCAL LENGTH SOLAR POWER ALTERNATIVE ENERGY HID LIGHT

By: SylwerDragon

SylwerDragon — Sun, 13 Jun 2010 10:37:00 +0000

Coool

By: JavaLessons

JavaLessons — Sun, 13 Jun 2010 10:08:18 +0000

Very illuminating !

By: MinTrinidad

MinTrinidad — Sun, 13 Jun 2010 09:13:16 +0000

This brings back memories of Physics labs, where we found the focal length by using the reflection method. This way is far much cooler. Write a book Dan please do.

By: darkvader47

darkvader47 — Sun, 13 Jun 2010 08:58:29 +0000

You would make a good science teacher, and I wouldn’t be bored at all. I’m a professional photographer and you’ve taught me more about Focal Length than I ever understood in photography class, honestly.

By: GREENPOWERSCIENCE

GREENPOWERSCIENCE — Sun, 13 Jun 2010 08:08:26 +0000

Wow!!!!! Thank you very much!!!!!!