Content Development Richa Sharma Publishing Head Anupama Jauhry Editorial and Production Teams Pallavi Sah, Vidya Subramanian Aman Sachdeva, Mahfooz Alam Technical Review Anumeha Shah Design and Illustration Teams Priyabrata Roy Chowdhury Yatindra Kumar and Vijay Nipane
Printed and bound in India
This book is printed on recycled paper.
The Energy and Resources Institute
All the small creatures How many times has your mother insisted that you wash your hands before you eat, so that there are no germs on your hands. These germs, called microbes or micro-organisms, are some of the smallest creatures on earth. They are so small that you cannot see them with naked eyes. A modern microscope can help us unravel the mysteries of even the smallest microbes.
Discovering a whole new world
The rst microscopes looked nothing like they do now
So, if microbes cannot even be seen, how do we know so much about them It is thanks to a man named Anton van Leeuwenhoek, who in 1673, used two lenses lenses are the special glasses that are used in spectacles to build a microscope. By its use, he discovered a whole new world of tiny microscopic creatures.