Write the contribution of Archimedes, Faraday, Hertz, J.J Thomson.
Answers
ANSWER :
CONTRIBUTION OF :
Archimedes : Principle of Buoyancy.
Faraday : Electromagnetic Induction.
Hertz : Electromagnetic Induction.
J.J Thomson : Discovery of electron.
In the 3rd Century BC, Archimedes: invented the sciences of mechanics and hydrostatics. discovered the laws of levers and pulleys, which allow us to move heavy objects using small forces. invented one of the most fundamental concepts of physics – the center of gravity.
Michael Faraday (1791-1867) is probably best known for his discovery of electromagnetic induction, his contributions to electrical engineering and electrochemistry or due to the fact that he was responsible for introducing the concept of field in physics to describe electromagnetic interaction.
Heinrich Hertz discovered radio waves. In 1886, Hertz decided to take up the challenge of proving Maxwell's theory by experiment. He devised an oscillator made of two polished brass knobs separated by a tiny gap. He applied high voltage a.c.
In 1897, J.J. Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. In addition, he also studied positively charged particles in neon gas.