Product name: Law of gas Demonstrator
Product size: 170*330 mm/6.69*12.99 in
Product material: metal, glass, plastic
Product weight: about 550g
How to use
Fix the demonstrator on the square bracket, open the rubber cap on the small nozzle of the air column glass tube, drag the tube plug up and down by hand, so that the contact surface of the tube plug and the outer tube is evenly coated with oil .
A 800mm beaker, a demonstration thermometer and a proper amount of boiling water are required for the demonstration.
Precautions
1. The friction surface of the air column glass tube should be kept clean and free of dirt, and the oil should be clean and free of impurities. Avoid dry and oil-free parts of the friction surface, otherwise the friction will increase sharply and air leakage will occur.
2. When the air column glass tube is immersed in hot water, take 2 to 3 minutes after the thermometer temperature does not rise and start to fall, then read again. At this time, the air column temperature and the water temperature approximately reach equilibrium. Premature reading will cause large errors.
3. Every time you change the hot water temperature, the temperature difference should be about 10C-30C, the temperature is higher, the volume change and the pressure change are more obvious.
4. When verifying Boyle-Marriott law, in order to keep the gas isothermal, do not hold the gas column glass tube with your hands.