Dalton developed what is known as the Law of Multiple Proportions, which stipulates that the masses in any compound were actually ratios of small whole numbers. He felt that each element, and there were new elements being discovered all the time, were their own unique atoms. This theory made ...
After J.J. Thomson's discovered the electron in 1897, it became clear that atoms were not the smallest building blocks of nature, but rather were composite particles. The newly discovered structure within atoms tempted many to imagine what the atoms structure might look like. Thomson theorized t...
Scientists discovered that atoms of some substances are radioactive. This means that they are unstable and can be split. The chain of splitting atoms releases great destructive energy and it was this discovery which led scientists to develop the idea of an atomic bomb. The American government sec...
Without understanding the role of vacancies, it has been discovered long time ago when using elements from the fifth group in the periodic table in diluted Al-In, Al-Sn, and Al-Cd pure binary alloys as well as additions to Al-Cu alloys that these elements retard the decomposition process ...
J. Thomson discovered electrons, by realizing that cathode rays were streams of particles and not electromagnetic waves. Thomson judged that the electrons must be coming from the atoms within the cathode-ray tube that he was experimenting with. This discovery was of immense importance because it ...
Quantum accelerator modes were discovered in experiments with kicked cold atoms in the presence of gravity. They were shown to be tightly related to resona... GR Artuso - 《Physical Review A Atomic Molecular & Optical Physics》 被引量: 0发表: 2009年 Spinor dynamics of quantum accelerator modes...
𝐸1E1-forbidden transitions are exploited in relatively light ions there (and in terrestrial plasmas at much higher densities), using satellite lines (discovered by Edlén and Tyrén at Uppsala in the 1930s [18]) near the X-ray diagram lines of few-electron ions of iron group elements. (...
Hence, it has been discovered that the combination of a (relatively) weak magnetic field to confine the optically cooled cesium atoms and a (relatively) insensitive transition combine to enable optically cooled atoms to be magnetically confined in two dimensions without disruption of the transition fr...
Scientists discovered that atoms of some substances are radioactive. This means that they are unstable and can be sppt. The chain of spptting atoms releases great destructive energy and it was this discovery which led scientists to develop the idea of an atomic bomb. TheAmerican government ...
Consequently the possibility of the reaction suppression of sodium itself by the atomic interaction between nanoparticles and sodium atoms, which occurs by suspension of nanoparticles into sodium, was discovered. Previous article in issue Next article in issue...