Flame Rainbow, a colorful chemistry demonstration by Chem TalkRion NakayaDecember 6, 2022October 25, 2023
Close-up cuts: Copper and aluminum wires, a pencil, and a steel boltRion NakayaJanuary 10, 2022January 10, 2022
Is this the longest simple electric train track in the world?Rion NakayaDecember 1, 2020December 3, 2020
