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nothing could move from its place without some force
applied to it. ‘What was this force?’ he wondered. What did Isaac
Isaac was an intelligent man with a questioning mind. ? Newton notice
as he sipped his
He thought very deeply about the matter and figured tea?
that there was a force deep within the Earth that
made the objects stay on it. Isaac thus discovered the force of
gravity. This was a very important discovery in the field of science.

Let us now read about another scientist who is remembered the
world over. His name is Alfred Nobel. He was born in Sweden and
grew up excelling in studies. He showed a deep interest in
developing explosives and later invented dynamite. Again, this
was a very important invention. It was extensively used in the gravity
mining and building of roads. Unfortunately, it was also misused
and caused destruction and death.

However, an incident changed Alfred’s life forever.
His brother died, and newspapers wrongly printed the
news as Alfred’s death, with the headlines saying that
the ‘Merchant of Death’ had passed away. He was dynamite
devastated at the thought that his invention was being
devastated used to kill people. He decided to put his entire fortune
into a trust that was used to fund international prizes for
peace. These became the famous ‘Nobel’ prizes. fortune

Have you ever thought of how our lives would be without electricity? Let’s read about
the great mind behind the invention of the electric bulb. Thomas Alva Edison was
possibly America’s greatest inventor. He invented nearly a thousand things and, most
importantly, the light bulb.

When Edison displayed his electrical bulb for the first time, one of the guests remarked
that the idea was good, but he doubted whether anyone would want to light up their
homes with such bulbs. How wrong he was!

There is an interesting story surrounding Edison. Many people used to visit Edison’s
office every day to meet him and take his advice. One day, a gentleman remarked
that his office door was very heavy and difficult to push open. He advised Edison to
replace the door with a lighter one. Edison answered that he had fixed a small pump
to the door. It pumped a gallon of water into the overhead tank every time the door
was pushed open. This was an extremely creative way of generating free power,
wasn’t it?

Another great inventor, Alexander Graham Bell, invented the telephone. Can you
imagine what it would be like if there were no phones or mobile phones? The first
words were spoken on the phone in the year 1876 by Alexander to his assistant Thomas

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