After he lectured at the Royal
Society, scientific associations in many other countries invited Jagadishchandra Bose. He
visited France, Germany, America and Japan besides England. He lectured at several places
and explained his discoveries.
When electricity passes through a man, animal or plant, we say there is
a 'shock'. When it is passed through a living being the being gets excited, 'irritated'.
Bose developed an instrument that would show such a reaction of the organism on agraph.
When electricity was passed through zinc, a non-living substance, a similar graph was
obtained. So he came to the conclusion that living and non-living things were very similar
in certain reactions.
In Paris he gave a lecture on this similarity between the living and
the non-living world. Have you heard of 'radar`? This is a very wonderful scientific
device. Sailors on the sea use it; it is also used to get information about aeroplanes
coming towards a place. So you see how useful it is during a war. If the aeroplanes of the
enemy try to attack a city, the radar shows their movement. J.C. Bose worked out some
details of very great importance; these are being used in the working of the radar. When
Jagadish chandra Bose again visited England, Cambridge University honoured him as a
Generally, when a man invents something new he declares that nobody can
make use of it without his permission. If anybody desires to, make use of it, he will have
to pay him money, Why? Because the inventor has worked hard and he has used his time and
brains for his invention. It is not right to make use of his work without paying him. An
inventor can make lakhs of rupees by just one or two inventions. Bose had invented many
instruments. They have since been used by many industries. When he was offered money for
these he did not accept it. He was very generous and noble; he felt that knowledge was not
any one's personal property. He permitted any one the use of the fruits of his work.
The Davy-Faraday Research Institute is a very famous scientific
institute for scientific research in England. This institute requested Jagadishchandra
Bose to continue his research there. Many eminent scientists pressed him to do so. Hence
tie worked there for some time and discovered new things. When an outside stimulus is
applied to the muscles of a man or a non-living thing (says a mineral), they respond to
it. Bose wondered whether this could happen in a plant also. To test this he brought a
leaf, a carrot and a turnip from the garden. He applied the stimulus, i.e., and
electricity. It was confirmed that plants also respond in a similar way. Jagadishchandra
Bose explained this at a meeting of the Royal Society. While explaining his discoveries he
said that the Indian sages had under stood such principles thousands of years ago. He
modestly added that his discoveries were an insignificant part of the great truth that our
ancient sages had realized.