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An interesting experiment

The candle burns with oxygen, and when I buckle the cup on the candle, there is less oxygen. The candle flame is getting smaller. Eventually, the oxygen was used up and the flames were extinguished. The pressure outside is high here, the pressure inside the cup is low, so the water replaces the position of the original oxygen. An interesting test He Xiaoying ten minutes during the class, I heard that today's composition class is going to be a small experiment. what to do? I wonder. "叮铃铃..." The class bell rang. I only heard Teacher De said: "This class, I will give you an experiment." "What?" "How do you do it?" The students talked a lot. "The subject of my experiment is: Who can take out the coin without getting wet?" Teacher De said while shaking a coin and throwing it into a basin of water. "Get the bag net." "Catch the chopsticks." "Suck with a magnet." "Take..." The students talked a lot. Teacher Deyi said with a hand: "You don't need these methods. I only use: candles, lighters and a cup to take them out." "Impossible." "Yes." "Yes." "Don't worry, look. I will do it," said Teacher De. The test started, and I saw Teacher De holding a candle and then fixing it in the water. She used a lighter to light the candle. Here, the candle burns very well. Finally, she picked up a cup, then turned it upside down and gently buckled it on the candle. The flames slowly grew, and the water slowly flowed into the cup as the fire became smaller. Finally, the flames went out. Here, the water also flows in. Here, Teacher De can easily take out the coins and not wet hands. "It's amazing!" "Unbelievable!" "Wow!" "I can't believe it!" "How is this possible?" The students couldn't believe their eyes. "I will tell you." De teacher said proudly: "This is because the candle burns oxygen, and when I buckle the cup on the candle, the oxygen is less. The candle flame is smaller. Finally, The oxygen was used up and the flames were extinguished. The air pressure outside was high and the pressure inside the cup was low, so the water replaced the original oxygen position.” This experiment is amazing!

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