Joseph Priestley was an 18th-century British theologian, Dissenting clergyman, natural philosopher, educator, and political theorist who published over 150 works. He is usually credited with the discovery of oxygen gas, although Carl Wilhelm Scheele and Antoine Lavoisier also have such a claim. 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 reject what would become the chemical revolution and to cling to phlogiston theory eventually left him isolated within the scientific community. Priestley's science was integral to his theology, and he consistently tried to fuse Enlightenment rationalism with Christian theism. In his metaphysical texts, Priestley attempted to combine theism, materialism, and determinism, a project that has been called "audacious and original". The controversial nature of Priestley's publications combined with his outspoken support of the French Revolution aroused public and governmental suspicion; he was eventually forced to flee to the United States after a mob burned down his home and church in 1791.

Read the rest of this article: http://en.wikipedia.org/wiki/Joseph_Priestley

_______________________________ Today's selected anniversaries:

1565: Portuguese knight Estácio de Sá founded the city of São Sebastião do Rio de Janeiro (St Sebastian of the January River) in honour of King Sebastian I. (http://en.wikipedia.org/wiki/Rio_de_Janeiro)

1872: Yellowstone National Park, one of the first national parks in the world, was established. (http://en.wikipedia.org/wiki/Yellowstone_National_Park)

1896: Ethiopia won the decisive Battle of Adwa over Italy, ending the First Italo-Abyssinian War. (http://en.wikipedia.org/wiki/Battle_of_Adwa)

1919: Korea under Japanese rule: The Samil Movement began with numerous peaceful protests in Korea, but was brutally suppressed by the Japanese police and army. (http://en.wikipedia.org/wiki/March_1st_Movement)

1954: The 15-megaton hydrogen bomb Castle Bravo was detonated on Bikini Atoll in the Pacific Ocean, resulting in one of the worst cases of radioactive contamination ever caused by nuclear testing. (http://en.wikipedia.org/wiki/Castle_Bravo)

_____________________ Wiktionary's Word of the day:

polymath: A person with extraordinarily broad and comprehensive knowledge. (http://en.wiktionary.org/wiki/polymath)

_____________________ Wikiquote of the day:

Try to remember this: what you projectIs what you will perceive; what you perceiveWith any passion, be it love or terror,May take on whims and powers of its own. -- Richard Wilbur (http://en.wikiquote.org/wiki/Richard_Wilbur)