About TAKANO YOSHIKI
About NAKAHARA MASANORI
About 札幌日本大学高
About dipole magnetic field
About electromagnetic induction
About Lorentz force
About permanent magnet
About Neodymium
About magnetic moment
About copper pipe
About school education
About school children
About drop test
About experiment
About magnetic flux density
About induced electromotive force
About electric current
About electric resistance
About circular ring
About induced current
About neodymium permanent magnet
About Electromagnetism in general
About Education of physics
About 磁性
About 研究
About 普及
About 磁石
About 実験
About おもちゃ
About 科学
About 金属パイプ
About 落下
About ネオジム磁石