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When Joseph Black was studying the properties of carbon dioxide, he found that a candle would not burn in it. When a candle was burned in a closed container of air, the candle would go out eventually, and the remaining air would not support a flame. This was normal, but when the carbon dioxide (caused by the candle) was absorbed by chemicals, some air was not absorbed. The air that remained did not support a flame.
He turned this problem over to his student at the time, Daniel Rutherford. Rutherford kept a mouse in a space with a confined quality of air until it died. Then, he burned a candle in the remaining air until it went out. Afterwards, he burned phosphorus in that, until it would not burn. Then the air was passed through a carbon dioxide absorbing solution. The remaining air did not support combustion, and a mouse could not live in it.
Rutherford called the gas (which we now know would have consisted primarily of nitrogen) “noxious air” or “phlogisticated air”.
Rutherford reported the experiment in 1772. He and Black were convinced of the validity of the phlogiston theory, so they explained their results in terms of it.
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Oct. 15, 2009
Oct. 15, 2009
(I wanna talk to you.) (The last time we talked, Mr. Smith, you reduced me to tears. I promise you it won't happen again.) Do I attract you? Do I repulse you with my queasy smile? Am I too dirty? Am I too flirty? Do I like what you like? I could be wholesome I could be loathsome Guess I'm a little bit shy Why don't you like me? Why don't you like me without making me try? I tried to be like Grace Kelly But all her looks were too sad So I tried a little Freddie I've gone identity mad! I could be brown I could be blue I could be violet sky I could be hurtful I could be purple I could be anything you like Gotta be green Gotta be mean Gotta be everything more Why don't you like me? Why don't you like me? Why don't you walk out the door? (Getting angry doesn't solve anything.) How can I help you? How can I help it? How can I help what you think? Hello my baby Hello my baby Putting my life on the brink Why don't you like me? Why don't you like me? Why don't you like yourself? Should I bend over? Should I look older just to be put on your shelf? I tried to be like Grace Kelly But all her looks were too sad So I tried a little Freddie I've gone identity mad! I could be brown I could be blue I could be violet sky I could be hurtful I could be purple I could be anything you like Gotta be green Gotta be mean Gotta be everything more Why don't you like me? Why don't you like me? Walk out the door Say what you want to satisfy yourself, hey! But you only want what everybody else says you should want You want I could be brown I could be blue I could be violet sky I could be hurtful I could be purple I could be anything you like Gotta be green Gotta be mean Gotta be everything more Why don't you like me? Why don't you like me? Walk out the door I could be brown I could be blue I could be violet sky I could be hurtful I could be purple I could be anything you like Gotta be green Gotta be mean Gotta be everything more Why don't you like me? Why don't you like me? Walk out the door (Humphrey. We're leaving.) (Ka-ching!)
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