Presently, my 6 articles are on www.sahatchaiw.com T hey are 1. PROJECTIVE GEOMETRY: Method of constructing perspective polygons 2. PROJECTIVE GEOMETRY: The property of similar conics in projective geometry 3. SWIMMING POOL: The theory of the colors of water in swimming pool (HOW TO MAKE WATER IN YOUR SWIMMING POOL BECOMES BLUE CRYSTAL CLEAR USING BASIC CHEMICALS.)4. CHEMICAL WEAPON: Procedures of producing Methylphos phoryldifluoride, Precursor of Nerve Agents : SARIN and Somans (BINARY MUNITION) 5. CHEMICAL WEAPON: Procedure of producing Biz-(2-chloroethyl)- sulfide, distilled 96%, Sulphur Mustards 6. CULTURE AND RELIGION: BRAHMACITTA: Principle and Practice to get BRAHMA's MIND for Laypersons"