空氣泡/氣泡跑得快/緩慢的氣泡/打氣泡/氣泡比賽/上升的氣泡--科技館展品展項方案
展示內容
展項通過氣泡在三組不同的密度液體中的運動狀態的不同,展示波義耳定律。展臺上有3個打氣筒,分別對應3個容器。科技館展品制作生產源頭工廠-上海慣量自動化有限公司提示大家容器里面分別是不同密度的液體。操作臺上的打氣筒,于是打氣裝置向容器底部打氣。觀眾可以看到,氣泡上升過程中,分別裝有水、石蠟油、煤油的容器中的氣泡,由于壓強逐漸減小,其體積逐漸增大。
科學原理
波義耳定律是由英國化學家波義耳在1662年根據實驗結果提出:在密閉容器中的定量氣體,在恒溫下,氣體的壓強和體積成反比關系。科技館展品制作生產源頭工廠-上海慣量自動化有限公司提示大家這是人類歷史上第一個被發現的定律。所以氣泡上升過程中,由于壓強逐漸減小,其體積逐漸增大。
操作說明
1.用力壓打氣筒;
2.對比不同管內氣泡的上升觀察現象。
表現形式
機械互動
Exhibits of Science Museum:
AIR BUBBL
According to Boyle’s law, when the temperature is constant, the air volume of a fixed amount is reversely proportional to pressure intensity. Production source factory of exhibits in science museum--Shanghai GuanLiang(inertia) Automation Co., Ltd reminds everyone that Because high density and high viscosity of the liquid, the intermolecular acting force is very big, so the air bubble formed has an adequate volume and the resisting force when the air bubble rises up is relatively, therefore the rising speed is slow, but as the air bubble rises up, its pressure intensity acted by the liquid is gradually reduced, thus it gradually becomes big.
視頻演示