Scientific Inventions and Discoveries

Scientific Inventions and Discoveries

SCIENTIFIC INVENTIONS AND THEIR INVENTORS

Following is the list of Important Scientific Inventions and their Inventors.

TIMELINE / SCIENTIFIC INVENTIONS AND INVENTORS

Year	Scientific Invention	Inventor
60	A small turbine driven by jets of stream	Hero
1644	Mercury barometer	Torricelli
1714	Mercury Thermometer	Fahrenheit
1800	Battery	Volta
1821	Electric motor	Faraday
1832	Moving coil-meter	Sturgeon
1879	Electric Light Bulbs	Swan and Edison
1928	Radiation Detector	Geiger and Muller
1942	Nuclear Reactor	Fermi
1947	Transistor	Bardeen, Brattain and Shockley
1960	Laser	Maiman
	Aeroplane	Wright Brothers
	Barometer	Jorricilli
	Galvanometer	Sweigger
	Glass	Egypt & Mosopotamia
	Maps	Evatosthens
	Motor A.c	Tesla
	Motor D.c	Davenport
	Refrigerator	Harrison
	Sub Marine	Holland
	Television	J. Baird
	Tractor	Froelich
	Radio	Marconi
	Telephone	Graham Bell
	Steam Boat	Fulton
	Steam Engine	Savery
	Telescope	Lippershey
	Transformer	William Stanley
	Radar	Watson Watt
	Sewing Machine	Home
	Washing Machine	Hurdy Machine
1958	Integrated Circuit	St Clair Kilby

SCIENTIFIC DISCOVERIES AND THEIR DISCOVERERS

Following is the list of Important Scientific discoveries and their discoverers.

TIMELINE / SCIENTIFIC DISCOVERIES AND DISCOVERERS

Year	Scientific Discovery	Discoverer
1790	Shape of our galaxy	Herschel
1895	X-Rays	Rontgen
1896	Radioactivity	Bacquerel
1897	Electron	Thomson
1898	Radium and Polonium	M. Curie
1899	Alpha and Beta rays	Rutherford
1919	Proton	Rutherford
1929	Universe is expanding	Hubble
1932	Neutron	Chadwick
1938	Nuclear Fission	Hahn

KEY DEVELOPMENTS IN SCIENCE

• 240 BC - Eratosthenes estimates the diameter of the Earth by comparing shadow angles in different places
• 1543 - Copernicus suggests that the Sun is at the centre of the Universe, with the Earth and planets moving around it
• 1600 - Gilbert suggests that the Earth acts like a giant bar magnet
• 1604 - Galileo shows that all falling objects should have the same, steady acceleration
• 1621 - Snell states his law of refraction
• 1654 - Guericke demonstrates atmospheric pressure
• 1662 - Boyle states his law of gases
• 1678 - Huyghens puts forward his wave theory of light
• 1679 - Hooke states his law for elastic materials
• 1687 - Newton publishes his theory of gravity and laws of motion
• 1752 - Franklin performs a hazardous experiment with a kite to show that lightning is electricity
• 1803 - Dalton suggests that matter is made up of atoms
• 1803 - Young demonstrates the wave nature of light
• 1825 - Ampere works out a law for the force between current-carrying conductors
• 1827 - Ohm states his law for metal conductors
• 1832 - Faraday demonstrates electromagnetic induction
• 1849 - Fizeau measures the speed of light
• 1852 - Kelvin states the law of conservation of energy
• 1864 - Maxwell predicts the existence of radio waves and other electromagnetic waves
• 1877 - Cailletet liquefies oxygen
• 1888 - Hertz demonstrates the existence of radio waves
• 1894 - Marconi transmits the first radio signals
• 1900 - Plank proposes the Quantum theory
• 1905 - Einstein uses the quantum theory to explain the photoelectric effect, and publishes his special theory of relativity
• 1911 - Rutherford proposes a nuclear model of the atom
• 1913 - Bohr uses the quantum theory to modify Rutherford's model of the atom
• 1916 - Einstein publishes his general theory of relativity
• 1924 - De Broglie suggests that particles can behave as waves
• 1925 - Schrodinger developes a wave-machine model of the atom
• 1927 - Lemaitre suggests the possibility of the Big Bang
• 1929 - Hubble discovers that the Universe is expanding
• 1932 - Cockroft and Walton produce the first nuclear change using a particle accelerator
• 1957 - First artificial satellite, Sputnik I, put into orbit
• 1963 - First geostationary communications satellite
• 1969 - First manned landing on the Moon
• 1971 - Intel Corporation makes the first microprocessor
• 1977 - First experimental evidence of quarks
• 1990 - Hubble Space Telescope launched