discovery one

The discovery of the phenomenon of radioactivity was purely accidental. In 1896, Henry Becquerel, a French scientist accidentally found that in presence of salt of uranium, photographic plates got heavily fogged even though they were wrapped in opaque paper. He concluded that the ur..

Discovery of Radioactivity - The discovery of the phenomenon of radioactivity was purely accidental. In 1896, Henry Becquerel, a French scientist accidentally found that in presence of salt of uranium, photographic plates got heavily fogged even though they were wrapped in opaqu..

Discovery of the Cell - The history of the discovery of cells dates back to the 17 t h century and is closely associated with the history of the invention of microscopes. An Italian microscopist Marcello Malpighi studied the structure of some plants and proposed the idea that pl..

. Thus the relative mass of such a particle = 1 amu and the absolute mass = 1.6 x 10 - 2 4 g. Because of their electrical neutrality, these particles were called neutrons We are now in a position of explain why the atomic mass of carbon is 12. It is now known that the carbon ato..

Discovery of Sulphuric Acid - Of all the acids, sulphuric acid is the most important one. In almost all industries, sulphuric acid is used directly or indirectly. Hence it is called the "King of chemicals". It is said that the material prosperity of a country may be determined b..

Of all the acids, sulphuric acid is the most important one. In almost all industries, sulphuric acid is used directly or indirectly. Hence it is called the "King of chemicals". It is said that the material prosperity of a country may be determined by the amount of sulphuric acid consumed ..

Discovery of Radioactivity and Nature of Radiations - In 1896, the phenomenon of radioactivity was accidentally discovered by French scientist Henri Becquerel. He was performing experiments with uranium compounds. He accidentally placed a crystal of potassium uranyl sulphate over photogra..

Ernest Rutherford, an energetic New Zealander working in England, was studying the properties of particles spontaneously emitted by radioactive substances. Of particular interest was a positively charged, relatively heavy emission named alpha particle. Quantities of such particles are emitted by c..

Atoms and Nuclei..

. Thus the relative mass of such a particle = 1 a.m.u and the absolute mass = 1.6 x10 -24 g. Because of their electrical neutrality, these particles were called neutron..