Cornish stone random color reversal magic Stone

Is the law of conservation of angular momentum broken? This super-classical science toy, when you rotate it in a clockwise direction, it turns incredibly and stops to rotate counterclockwise. This is illogical! The store manager couldn't help but kneel down in the spotlight. Mr. Sai~ Isn't my physics just white? In fact, yes, the store manager’s physics really returned to the teacher. The law of conservation of angular momentum has not been broken, but because of the many interesting physical phenomena, the effect of reversal is caused! https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_46eb5985-35db-4be4-8bbd-d1da19c6525e.gif https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_26dd765f-bf47-4c08-84b6-841dc3f4f981.gif (Image source from Department of Physics, University of Texas) This is a classic physical science toy. History can be traced back to the 19th century when archaeologists discovered the mysterious gyro that would turn itself when studying the remains of the ancient Celtic. After the publication of the first research paper in the 1890s, scientists were deeply fascinated by this bizarre item, and more than 28 research reports were published after the 1980s. So far, many teachers have used science textbooks! It has many names such as Celtic stone, Rattleback, anagyre, celt, Celtic stone, rebellious celt, rattlerock, spin bar, Robinson Reverser, wobble stone..... When you turn it clockwise, the Celtic stone is going to turn back against the clock. It’s really rebellious! What is the secret of this reversal of this beautifully colored plastic Celtic stone? https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_c4bd84ef-cc44-4bab-841d-271b30fa6e28.jpg The colors are shipped randomly, only red and green. (You can write the color you want in the remarks column. If you don't fill in the game, Mr. Sai will ship it randomly.) https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_04965427-a867-4a6f-a646-b9a04b9d5233.jpg https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_00a8d1be-0898-4bab-88e5-6f6e66fab7d7.jpg Press it, the Celtic stone will also show the phenomenon of counterclockwise rotation! Now you know why? Product specifications: ► Size: 9.6cm x 2cm x 1cm ► Material: Plastic ► Manufacturing location: China Precautions: ► Beware of children swallowing ► Please rotate on a smooth surface