-
Antoine Lavoisier
Antoine was born August 26th, 1743 in Paris. He died May 8th, 1794 in Paris. Antoine was the discoverer that discovered oxygen and hydrogen. He discovered elements, formulated a basic law of chemistry and helped to create the metric system.His accuracy led him to the metric system of weights and measures. This is still used today. -
John Dalton
John was born September 6th, 1766 in Cockermouth. He died July 27th, 1844 in Manchester.He is noted for Atomic Theory and he also did research into colour blindness.Atomic theory states that matter is made of tiny atoms. John came to the theory that atoms cannot be destroyed. -
J. Plücker (Julius Plucker)
Julius was born June 16th, 1801 in Elberfeld. He died May 22nd, 1868 in Bonn.Julius was a German mathematician and physicist. He had made fundamental contributions to the field of analytical geometry. He was also a pioneer in the investigations of cathode rays that had led to the electron. -
Wilhelm Röntgen
Wilhelm was born March 27th, 1845 in Remscheid. He died February 10th, 1923 in Munich. Wilhelm was a German physicist. He had received the Nobel Prize in physics in 1901, for the produced and detected electromagnetic radiation in a wavelength range, it is known as X-rays these days, or even Rontgen rays.The International Union of Pure and Applied Chemistry (IUPAC) name the element 111 Roentgenium after him. -
Henri Becquerel
Henri was born December 15th, 1852 in Paris. He died August 25th, 1908 at Le Croisic.Henri was a French physicist and the discoverer of radioactivity with Marie and Pierre Curie. Due to the work that Henri did with potassium uranyl sulfate that was exposed to the sunlight and placed photographic plates that when it had been developed the plates would reveal an image of uranium crystals, Henri was the first scientist to discover radioactivity. To be sure that the crystals were radioactive, -
J.J. Thomson (Joseph John Thomson)
Joseph was born December 18th, 1856 in Cheetham Hill. He died August 30th, 1940 in Cambridge.Joseph is the discoverer of electrons. He had discovered that every atom has electrons outside of the nucleus, after a series of experiments he had discovered this. -
Max Planck
Max was born April 23rd, 1858 in Kiel. He died October 4th, 1947 in Gottingen. Max was a German theoretical physicist who had originated quantum theory. He had won the Nobel Prize in physics in 1918 for this. He thought that elements would eventually lose their heat or energy over time. That is why he developed the quantum theory. His contribution helped understand atomic and subatomic processes. -
Marie & Pierre Curie
Marie was born November 7th, 1867 in Warsaw. She died July 4th, 1934 in Sancellemoz. Pierre was born May 15th, 1859 in Paris. He died April 19th, 1906 in Paris.Marie and Pierre discovered Polonium, Radium when they were investigating radioactive substances. Pierre had developed a highly sensitive way to detect radiation from a radioactive source Marie started to test every substance she could find. Henri Becquerel, Marie and Pierre shared the Nobel Prize in physics. -
Robert Millikan
Robert was born March 22nd, 1868 in Morrison. He died December 19th, 1953 in San Marino.Robert was an American experimental physicist, for his measurement on the charge on the electron and also because he worked on the photoelectric effect. By using the famous ‘falling-drop method’ Robert had succeeded the accurate determination of the charge carried by an electron. -
Ernest Rutherford
Ernest was born August 30th, 1871 in Brightwater. He died October 19th, 1937 in Cambridge.Ernest was a British chemist and physicist who had become the father of nuclear physics. He had published his atomic theory describing that the atom has a central nucleus that is positive that is surrounded by negative electrons that are orbiting. He did an experiment with his gold foil model that contained a detecting screen that was acting as the membrane, particle emitter and silt. -
Niels Bohr
Niels was born October 7th, 1885 in Copenhagen. He died November 18th, 1962 in Copenhagen. Niels was a Danish physicist. He received the Nobel Price in Physics in 1922 because he had made foundational contributions to understanding atomic structure and quantum mechanics. He helped develop quantum mechanics, so that electrons move from one energy level to another in steps instead of them going continuously. -
Henry Moseley
Henry was born November 23rd, 1887 in Weymouth, Dorset. He died August 10th, 1915 in Gallipoli. Henry was an English physicist. Henry was the first man to arrange the Periodic Table in order being based on the elements atomic number.Before he did the Periodic Table he had studied with X-rays, so when he had finished the Periodic Table he published his results of measurements and wavelengths from X-rays. -
Enrico Fermi
Enrico was born September 29th, 1901 in Rome. He died November 28th, 1954 in Chicago.Enrico was an Italian theoretical and experimental physicist, he known for his work on the development of Chicago Pile -1. It was the first nuclear reactor. Robert Oppenheimer and Enrico are referred to as ‘the father of the atomic bomb’.He was awarded the 1938 Nobel Prize in physics award for his work on the induced radioactivity and the discovery of transuranic elements. -
Werner Heisenberg
Werner was born December 5th, 1901 in Wurzburg. He died February 1st, 1976 in Munich.Werner had been awarded the Nobel Prize in physics in 1932 for the creation of quantum mechanics. He was a German theoretical physicist. Most of Werner’s work was associated with Niels Bohr, which would be the radiation emitted by the atom. -
Democritus
Democritus was born 460 BC in Abdera. He died 370 BC. Democritus was an Ancient Greek philosopher. Everything around us is made of atoms. Atoms are indivisible and cannot be broken down. Atoms can get heavier because there is heaps of empty space in between the atoms.
