Electrostatic Forces
The electric charge present almost in universe and around us. Electric charge unknown a long time for humans being when lighting in the sky he try to explain on imaginary interpretation which was unsatisfactory.
6000 B.C. Thales
discovered lighting effect also happened when we rubbed Amber against fur.
Thales was a Greek philosopher. He was born in
Miletus in Greek Ionia.
When fur rubbed against amber
it gets magical attracting property to pull toward a non metallic material such
as straw, feather and paper. An
‘elektron ‘is Greek word of electron which is in the form of Mysterious
power electric.
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After
2000 year of Thales William Gilbert and other scientist experiment with amber
and loadstone, after observation they found that the electricity present in the
nature. They also differentiate the electric and magnetic attraction by
observing the property of different materials.
Here we
are doing simple experiment to understand the lighting phenomena in nature. When
we rubbed the glass rod against the fur the glass rod get property of
magnetism. When we move the glass rod
near the small piece of paper it gets attracted towards the glass rod.
Here
is another simple experiment with comb. Now brush your hair with comb in dark
room, now move the comb near to your thumb. What you observe? A small sparkle!
Yes this because the comb gets charged. Now again brush with your hair and move
your comb near to small piece of papers it get attracted towards the comb this
is because comb is charged and get property of magnetism.
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When object receives the property of attraction then it is
called charged. Where ebonite rod is different from glass rod because the glass
rod has positive charge and ebonite has negative charge. When same charge of
material we brought together it get repulsion while opposite charges brought
together it gets attraction. Neutral rods get charged when brought close to
charged to rod, the other rod again neutral due to effect of electrostatic
Induction.
But Man
still not knows about the nature charge, positive charge and negative charge it
is observed only using the practical.
