Magnet repulsive principle of opposites the long * width * high u-95MM*63MM*17MM=164.2 grams

this set of magnets is used in teaching physics experiment, demonstration (Physics Science Experiment Course in primary school, middle school) teaching tool. Can also be used for student stationery, children's toys... Real existence and change it can make students intuitive feelings to the magnetic field, but also the vivid expression of its physical characteristics, can arouse students' interest in learning, so that their attention, stimulate their thinking and imagination. It is a great help and promote the primary and middle school students and children understanding and cognition of the magnetic field. The magnetic field is harmless to human body, the child can use magnetic N; S pole and the earth's magnetic field homogeneity repulses. attraction principle of