Features:
Sound Propagation Experiment:The Bell On The Bell With A Bell Above The Sound Of The Bell,Bells Can Still Hear A Clear Electric Bell,And Then Extract The Air Bell,Electric Bells Will Gradually Weaken Until The Sound Can Not Hear,Close The Exhaust Valve,So That Students Observe,Bell Bell Hammer Is Still Kept Ringing Bell,But Can Not Hear The Sound.
Low-Pressure Boiling Test:A Cup Of Hot Water Has Discharged Boiling Into The Bell Jar,And Then Pumping,You Can See The Cup Of Hot Water And Boiling Up.
The Instrument Can Also Be Used:Vacuum Fountain,Evaporation Icing,Vacuum Coating,Atmospheric Pressure And Other Experiments.
Note:You Need A Vacuum Pump To Do The Experiment.
Specifications:
Material:Glass+Plastics
Color:As Shown
Size:28CMX18CM(11"X7")
Package Include:
1PCS X Vacuum Hood Suction Disc (Batteries Not Included)
Logistics information
Our products are located in Hong Kong, China, and the logistics speed depends on your specific location. According to our experience, it usually takes about 15-20 days of transportation time
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How to choose the correct size:
Step 1 Please measure your foot length carefully.
Step 2 Please choose the correct size according to your foot length and chinese size.
For example, If your foot length is 255 mm , you should choose the size 8.
