THE INVENTIONS OF SCIENTISTS AND THE PHYSICAL QUANTITES

 Ok guys, these are the inventions and scientific names which changes the world like this:

•  tuning Fork invented by the conig.
• The sound was recorded and reproduced for the first time by Edison next.
• The first law of thermodynamics was introduced by the Joul.
• Weber scientists introduced the molecular theory of magnetism. And this theory of magnetism improved by the eving.
• Scientists coulomb invented the law of magnetic forces.
• Bennett invented the gold-leaf electroscope.
• Michael Faraday introduced electrolysis.
• The first theory of Hanson oerested is invented by a wire carrying current behaves like a magnet.
• E Goldstein proposed the positive rays.
• JJ Thomson proposed the cathode rays.
• Proton was discovered by  Rutherford.
• Neutron was discovered by James Chadwick.
• Discovery of electrons by millicon.
• X-rays  invented by rontgen.
• Artificial radioactivity was discovered by Joliot and iren curie.
• Artificial transmutation was introduced by Rutherford.
• Nuclear fission invented by otto Hahn.
• Diode valve invented by Flemming.
• Triode valve invented by lee de forest.
• Television was invented by Jenkins.
• The ionic bond invented by Lewis.
• Law of octaves introduced by the Newlands proposal theory.
• The name PH and its value invented by Sorensen.
• Einstein invented the law of mass-energy equivalence.
• Cavendish, the discovery of hydrogen.
• The atomic bomb first introduced by Otto Hahn.
• Galileo invented the telescope.
• Mors introduced the telegraph.
• Michael Faraday introducing the Transformer into the world. That's why Michael Faraday is the father of electricity.
• Benjamin Franklin introduced the lightning conductor.
• Radar was invented by the ah Taylor and LC young.
•  Curie Jairy Invented the radium.
• The computer was invented by Charles Babbage.
• The acid-base ionic theory was introduced by the Arrhenius concept.
• John Dalton developed the atomic theory.
• HJ Mosley introduced the modern periodic table.
• Newton invented gravity.

some of the physical quantities and values and it's units in the world:

• the velocity of sound at room temperature is equal to 352 meters per second.
• The velocity of sound in water 1400 meters per second.
• The velocity of sound in a vacuum is equal to zero.
• The human audible limit is 20 to 20000 HZ.
• 1 calorie is equal to 4.2 joules. 

• The dielectric constant of Glass is 7.
• The potential of the earth is zero.
• The dielectric constant of rubber is 3.
• The dielectric constant of paraffin is 2.
• The electromotive force of a cell is equal to 1.5 volts.
• The electromotive force of an accumulator is equal to 2 volts.
• 1 AMU equal to 932 Mega electronic volts.
• pressure in the x-ray tube equal to 0.01 m.m.
• The wavelength of X-Ray is equal to 1 by 8000 the part of the wavelength of visible light.
• The valency of P-type semiconductor is equal to 3.
• the valency of N-type semiconductor is equal to 5.