Develop your personality.

  Water the elixer of life. Summary of the lesson. This lesson has been written by Sir. C.V. Raman. He has emphasized on the importance of the world's most common liquid. Man has been searching for an  imaginary elixir  of life for ages - but the true medicine is very near to our hands; it is the simple  water . He draws example of the  Nile valley  civilization to show how one side is the most fertile land on the earth while the other is a sea of  billowing sand  without a speck of green. Nile river is the life-giving waters that has created and sustained the whole country of  Egypt .   Water adds beauty to the countryside, be it a small stream or the  rainfed tanks  that are a common sight in South India. These tanks store the silt-laden water full of nutrients and minerals which are  precious  to the crops. But they are often  neglected  and not properly maintained. Swiftly flowing water carries fairly large and  heavy particles  while the finer particles which are more in numbe