A civil matter involves legal actions between individual people or businesses over issues like personal injury, breach of contracts, property rights, etc. A criminal actâ¦ion involves legal actions between the government and individual people for violation of that government's laws against criminal behavior.
Nuclear energy was discovered accidentally by French physicist Henri Becquerel, when he found that photographic plates stored near uranium compounds reacted as though they had been exposed to light in a way similar to X-rays.uclear reactors produce energy from uranium through an atomic fission reactionâthat is, radioactive atoms are split apart and the energy that is released in that fission is harnessed to produce heat and electricity.
In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them.In 1886 French physicist Antoine Bequerel first discovered radioactivity.Thomson student from New Zealand Ernest Rutherford named three types of radiation; alpha, beta and gamma rays.n 1894 Sir William Ramsay and Lord Rayleigh discovered the noble gases, which were added to the periodic table as group 0. In 1897 English physicist J. J. Thomson first discovered electrons; small negatively charged particles in an atom. John Townsend and Robert Millikan determined their exact charge and mass.