perception on S Anand

Size of the sun and moon

Sat, 01 Apr 2006 12:00:00 +0000

The sun and moon look smaller than you think.

The apparent large size of the Sun and Moon as we see them in the sky is a psychological illusion. There are several different explanations for this. If you take a picture of the moon with a camera lens that has the same field of view as Celestia, you may be surprised at the small size of its image.

Here is something you might try: a finger at arm’s length is about two degrees wide for most people. That means that you can fit four moons side by side. Go outside and check it. Now have a direct look at your finger indoors. Can you still believe that four moons will fit on it?

Tough Learning

Fri, 09 Sep 2005 12:00:00 +0000

Tough learning. Excellent article (speech, actually) by a physicist on how to learn. Very readable, and has a quote I won’t forget: “A change of perception is worth 80 IQ points.”

Comments

Ramesh 10 Sep 2005 9:50 pm: That was really a good article would highly recomment others to read the same
Arun 11 Sep 2005 3:20 pm: Illuminating. Needed that right now.Thanks.

Cognitive daily

Mon, 14 Mar 2005 12:00:00 +0000

Cognitive daily.

Are rich kids more troubled than poor kids?
How do we decide what we’re seeing?
What else are we doing when we watch a movie?
What are we doing when we watch a movie? etc.