1900 - Mendel founded the science of Genetics.

Max Planck framed the Quantum Theory.

1901 - The first radio signal was transmitted across the Atlantic.

1902 - Oliver Heaviside Ionosphere.

1903 - First journey of an Aeroplane.

1904 - The theory of Radioactivity was put forward.

1904 - The discovery of Radioactive elements, Radium and Polonium.

1905 - The Theory of Radioactivity by Albert Einstein.

1908 - The Geiger counter is discovered for measuring Nuclear Radiation.

Ford’s Model T was the first car to be built by Mass Production methods.

1911 - Ernest Rutherford discovers the Atomic Nucleus.

1912 - The launching of the first diesel locomotive in Germany.

1913 - The orbiting Atomic theory is developed.

1916 - The theory of Relativity is put forward by Albert Einstein.

1920 - The chromosome theory of Heredity is developed by Thomas H Morgan.

1928 - Alexander Fleming discovers Penicillin.

1930 - Frank Whittle patents the Jet Engine.

1932 - James Chadwick discovers Neutrons.

1934 - Artificial Radioactivity is discovered.

1937 - The first fully pressurized aircraft.

1939 - The discovery of Nuclear Fission.

1945 - University at Pennsylvania built the first general- purpose fully electronic digital computer.