Do You Know ? ---II

1)What is Cosmic Light ?

The Cosmic Micro Wave Background Radiation (CMB) is the faint glow of light that fills the universe.It is the after glow of the Big Bang streaming through the space these last 14 billion years.It is the oldest light we can see.The light is important in the study of Cosmology because it carries the finger print of the Universe as it was at the time of its birth.

2)Why can't you tickle yourself ?

The answer lies at the back of the brain in an area called Cerebellum,which is involved in monitoring movements.When you try to tickle yourself the Cerebellum predicts the sensation and this prediction is used to cancel the response of other
brain areas to the tickle.


Compiled by BAIYU Mumbai 28 June 2009.