Cross-border TEMU Amazon AliExpress shein Franklin boiling ball…

[Drinking Bird, Franklin Boiling Ball] Main Customer Group: Customized by cross-border e-commerce and foreign trade companies, domestic education and training institutions and school orders (price does not include tax, please communicate first if you want to issue an invoice) Please do not take photos of other idle personnel, thank you!The school custom-made teaching aids are suitable for display of science and technology museums and physics experiments of science teaching aids in universities and universities.I would like to emphasize again: Please do not disturb the idle people!Thanks!welcome“Cross-border e-commerce companies, universities, middle schools, experimental expansion institutions, experimental equipment companies”Consultation and communication!

[Galileo Thermometer] is mainly used in scientific experiments. When the temperature changes, the density of the liquid will change accordingly, causing the suspended heavy objects to move up and down until they are equal to the surrounding liquid density.Weights with low density will be on the top, and each weight is hung with a metal disc engraved with numbers. When reading the surrounding temperature, it will be relatively accurate to find the one suspended in the middle of the suspended weight. In the Galileo thermometer, each small glass ball is filled with a different color of liquid, and the composition of the liquid does not affect the operation of the thermometer. After the glass is blown and sealed, the equivalent density of the small glass ball is adjusted by the metal disc hanging down, because the volume of the glass ball is fixed, and the temperature will not cause significant impact on the internal gas.The transparent liquid around is not water, but some organic solutions whose density changes with temperature and are larger than water.Through experimental research, the physical principles involved include temperature, buoyancy, density and concentration, etc.