That 40-year-old Sachin Ramesh Tendulkar, the youngest Bharat Ratna awardee, is the only batsman to score 100 international centuries is a widely known fact.
But it is also a fact that Prof Chintamani Nagesa Ramachandra Rao(89), also known as C N R Rao, became the first Indian in April this year to reach the h-index of 100, reflecting the enormity of the body of his published research work.
Translating the feat into common man's parlance, scientists say Rao's achievement is equivalent to Tendulkar scoring 100 international centuries.
The h-index was first described in 2005 by physicist Jorge Hirsch. A scientist's h-index is the greatest number of papers he or she has published that have each amassed at least that many citations.
A section of the global scientific community though says h-index in itself may not be enough to rate a scientist and one also has to look into the total number of citations along with it to rate a scientist. Prof Rao, incidentally, is the only Indian scientist and among a handful in the world with close to 50,000 citations, which puts him in the league of the biggies of science.