Man is surrounded by an ocean of energy. Mankind has tapped only a fraction of it. The most colossal dynamo of all is the sun, an unimaginable vast powerhouse which affects everything on earth. From time immemorial man has learnt to harness this energy. In 100 B.C. Romans used coal as a fuel to produce fire. In 650 B.C. windmills were used to help travel from place to place. Steam engines later replaced horses and developed into locomotives as modern means of transport.
The invention of battery, dynamo and electricity transformed the industries and daily lives of people. Today we know how to harness other types of energies such as hydroelectric energy, nuclear energy, solar energy, thermal energy and tidal energy.
