Friday, April 8, 2011

Fly on the Moon

A local vernacular magazine carried a cartoon. A scientist is looking through his telescope at the moon. In the drawing there is a fly sitting on the objective lens of the telescope. Readers can see that. The rub is that the scientist is declaring that there is a fly on the moon.

Ha, ha. Or may be not. Students of Physics, high school onwards, will tell you that if a fly is sitting on the objective lens of a big telescope focused on the moon then you shall not see the fly at all. The only effect of the fly will be that the image of the moon will have less overall brightness.

But the cartoon is a rather effective one. If you can not be a scientist then you can at least make fun of them. Who is loosing here? Everybody, scientists and common people included.