Question:
What is the basic principle of electric pen ? Explain how it can be used for writing.
Answer:
Electric charge on ions is used for writing with an electric pen.
Method :
(i) Take a filter...
Five measures to control industrial pollution in India are as follows:
(i) Particulate matter in the air can be reduced by fitting smoke stacks to factories with electrostatic precipitators, fabric filters,...
Law of motion
Sir Isaac Newton was one of the greatest scientists and mathematicians that ever lived. He was born in England on December 25, 1643. He was born the same year that Galileo...