-
John Dalton
What John Dalton discovered is that, elements were made of the smallest particles called atoms. He also found out that all atoms for a particular element were identical, and atoms of different elements could be torn apart by their atomic weight. John Dalton also discovered, that atoms of different elements could combine in a chemical reaction to form chemical compounds in fixed ratios. In 1803 he revealed the concept of Dalton's Law of Partial Pressures. -
J.J.Thomson
In 1897 Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, and thus he is credited with the discovery and identification of the electronwith the discovery of the first subatomic particle. Thomson is also credited with finding the first evidence for isotopes of a stable (non-radioactive) element in 1913, as part of his exploration into the composition of canal rays (positive ions). He invented the mass spectrometer.Won Nobal Prize in Physics,1906 -
Ernest Rutherford
Ernest Rutherford was the physicist who became known as the father of nuclear physics.Heis the was also the Doctoral advisor of James Chadwick.His students were Niels Bohr and James Chadwick.These were some famous staements he made"The energy produced by the breaking down of the atom is a very poor kind of thing. Anyone who expects a source of power from the transformation of these atoms is talking moonshine." -
Maria Curie
Marie Curie discovers the Radium, the Radioactivity and Polonium. She was the first woman to win a Nobel Prize, the only woman to win in two fields, and the only person to win in multiple sciences. She was also the first woman to become a professor at the University of Paris, and in 1995 became the first woman to be entombed on her own merits in the Panthéon in Paris. -
Niels Bohr
Niels Bohr contributions were to understanding atomic structure and quantum theory. Bohr was the first to discover that electrons travel in separate orbits around the nucleus and that the number of electrons in the outer orbit determines the properties of an element.The chemical element bohrium (Bh), No. 107 on the Periodic Table of the Elements, is named for him."Everything we call real is made of things that cannot be regarded as real."This was one of his quotations. -
Henry Mosely
Henry Mosely's contribution to the science of physics was the justification from physical laws of the previous empirical and chemical concept of the atomic number.He developed the application of X-ray spectra to study atomic structure and positioning of elements in the Periodic Table. -
Francis Aston
Francis Aston won the Noble Prize in Chemistry in 1922 for his 1919 discovery of means of his mass spectrograph, of isotopes, in a large number of non-radioactive elements and for his enunciation of the whole number rule. He was author of book,
Isotopes (1922)
Structural Units of the Material Universe (1923)
Mass Spectra and Isotopes (1933) -
James Chadwick
James Chadwick he was an English physicist who was awarded the 1935 Nobel Prize in physics for his discovery of the neutron in 1932. He wrote the final draft of the MAUD Report, which inspired the U.S. government to begin serious atomic bomb research efforts. He was the head of the British scientists who worked on the Manhattan Project during World War II. He was knighted in England in November 1945 for achievements in physics. -
Erwin Schrodinger
Erwin schrodinger was a physicist who developed a number of fundamental results in the field of quantum theory, which formed the basis of wave mechanics. He was awarded the 1933 Nobel Prize in Physics -
Murray Gell-Mann
He was an American physicist who received the 1969 Nobel Prize in physics for his work on the theory of elementary particles. He is the Robert Andrews Millikan Professor of Theoretical Physics Emeritus at the California Institute of Technology, a Distinguished Fellow and co-founder of the Santa Fe Institute, Professor in the Physics and Astronomy Department of the University of New Mexico, and the Presidential Professor of Physics and Medicine at the University of Southern California.
