How did priestly light a candle from outside by mint leaf experiment in 10th class 1st lesson nutrition
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Priestly experiment:
Experimental setup:
#CASE I- he lit a candel and covered it with a bell jar (which was air tight)
OBSERVATION: He observed that the candel extinguished very quickly
INTERFERENCE- Burning candels damage the air.
#CASE II - He kept a rat inside the bell jar ( air tight)
OBSERVATION- Priestly observed that the rat died, suffocating itself.
INTERFERENCE- Breathing animals damage the air.
#CASE III -He kept a rat, a lIt candel and a mint plant inside the bell jar.
OBSERVATION- He observed that the rat continued to live, and the candle continued to burn.
INTERFERENCE- Plants restore to the pure air whatever breathing animals and burnig candels remove. Plant purify the air which is damaged by breathing of animals and burning of candels.
NOTE:
Later it was confirmed that the pure air refered above is presence of oxygen, and the damage to the air by breathing animals and burning candels refers to the presence/production CO2 .
Experimental setup:
#CASE I- he lit a candel and covered it with a bell jar (which was air tight)
OBSERVATION: He observed that the candel extinguished very quickly
INTERFERENCE- Burning candels damage the air.
#CASE II - He kept a rat inside the bell jar ( air tight)
OBSERVATION- Priestly observed that the rat died, suffocating itself.
INTERFERENCE- Breathing animals damage the air.
#CASE III -He kept a rat, a lIt candel and a mint plant inside the bell jar.
OBSERVATION- He observed that the rat continued to live, and the candle continued to burn.
INTERFERENCE- Plants restore to the pure air whatever breathing animals and burnig candels remove. Plant purify the air which is damaged by breathing of animals and burning of candels.
NOTE:
Later it was confirmed that the pure air refered above is presence of oxygen, and the damage to the air by breathing animals and burning candels refers to the presence/production CO2 .
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Explanation:
Priestley observed that a candle burning in a closed space such as a bell jar, soon gets extinguished. ... He focused sunlight beams with a mirror onto the candle wick and was successful in relighting the candle from outside the bell jar without disturbing the experimental set up.
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