Electromagnetic Power Battery Train Maglev Train Toy School Science Physics Experiment Technology Children's Teaching GiftPrinciple: the coil is energized to generate a magnetic field, and the same...
Science Experiment Electromagnetic Lnduction Power Train Puzzle Toy Kids Science Technology STEM Maglev Physics Teaching GiftPrinciple: the coil is energized to generate a magnetic field, and the...
Madebo hemisphere experiment courseware
[design concept]
In many aspects of human life and production, we need to use the knowledge of atmosphere and atmospheric pressure. Understanding and feeling...