NAKARAJAN

JOSEPH PRIESTLY , INVENTER OF SODA WATER , OPTICS , OXYGEN DIED ON 1804 FEBRUARY 6 Joseph Priestley FRS (/ˈpriːstli/;[2] 24 March [O.S. 13 March] 1733 – 6 February 1804) was an 18th-century English Separatist theologian, natural philosopher, chemist, innovative grammarian, multi-subject educator, and liberal political theorist who published over 150 works. He has historically been credited with the discovery of oxygen,[3] having isolated it in its gaseous state, although Carl Wilhelm Scheele and Antoine Lavoisier also have strong claims to the discovery.[4] During his lifetime, Priestley's considerable scientific reputation rested on his invention of soda water, his writings on electricity, and his discovery of several "airs" (gases), the most famous being what Priestley dubbed "dephlogisticated air" (oxygen). However, Priestley's determination to defend phlogiston theory and to reject what would become the chemical revolution eventu...

ORVILLE WRIGHT ,  ONE OF THE AEROPLANE INVENTER DIED 1948 JANUARY 30 Orville Wright is best known for inventing the airplane with his brother, Wilbur. died in Dayton on January 30, 1948. Synopsis Born in Dayton, Ohio, in 1871, Orville Wright and his elder brother, Wilbur Wright, were the inventors of the world's first successful airplane. The brothers successfully conducted the first free, controlled flight of a power-driven airplane on December 17, 1903. They subsequently became successful businessmen, filling contracts for airplanes in both Europe and the United States. Today, the Wright brothers are considered the "fathers of modern aviation." Orville is also known for developing technology for the U.S. Army. He died in Dayton on January 30, 1948. Early Life Orville Wright was born on  ,  on August 19, 1871 , in Dayton, Ohio, one of five children of Susan Catherine Koerner, and Milton Wright, a bishop in the Church of the United Brethren in Chri...