Georges Urbain, Charles James and Carl Auer von Welsbach independently discovered lutetium from ytterbium oxide. In 1907, French chemist Georges Urbain separated lutetium from ytterbia in Paris.
By G.P. Thomas
12 Dec 2012
Pierre-Jules-César Janssen, a French astronomer first observed the yellow line spectrum during the solar eclipse in 1868.
In 1940, three chemists named Dale R. Corson, Kenneth R. Mackenzie and Emilio Segre at the University of California found an evidence for the existence of an unknown element at the end of an experiment of bombardment of bismuth isotope with alpha particles using cyclotron.
Argon was discovered by a Scottish chemist, Sir William Ramsay and an English chemist, Lord Rayleigh in 1894.
By G.P. Thomas
12 Dec 2012
Air carbon arc cutting is a process of removing metal by means of heat generated from a carbon arc. This process employs a carbon/graphite electrode, compressed air and a standard power source.
By G.P. Thomas
10 Dec 2012
Acrylic resins include thermosetting or thermoplastic plastic substances obtained from methacrylic acid, acrylic acid or other related compounds. These resins are extensively used in mobile telephones, television screens, furniture, in domestic paints and these are also mainly used in aquariums.
A polyamide is a polymer that contains amide monomers joined together by peptide bonds.
Polystyrene (PS) is an aromatic polymer of the monomer styrene. Polystyrene is an extensively used plastic with a production scale of several billion kilograms per year.
Autofrettage is a metal fabrication method with a wide range of applications, from the manufacture of gun barrels on battleships and tanks to the manufacture of fuel injection systems for diesel engines.
By G.P. Thomas
3 Dec 2012
Abrasive blasting is a technique that has been in existence since 1870 when the first abrasive blasting process was patented by Benjamin Chew Tilghman.
By G.P. Thomas
29 Nov 2012