古代の武器①/Ancient Weapons

古代の武器②/Ancient Weapons

刃物の歴史/History of Cutlery

火起こしシリーズ②/Starting a fire

フライングディスクの科学／The Science behind Flying Discs

Ancient Weapon: The Boomerang / Mr. Denjiro's Happy Energy! #813

Screws and Matchlocks / Mr. Denjiro's Happy Energy! #782

I made a (3+3+3+3)+3 axis tourbillon

ゴムは面白い/Rubber is interesting

Atlatl: A Weapon of Ancient Times / Mr. Denjiro's Happy Energy! #799

火起こしシリーズ①/Starting a fire

ジャイロ/Gyro

sharpest Cardboard kitchen knife in the world

Upin & Ipin Full Movie 2024 | Mail Bagi - Bagi Ikan Gratis | Ipin Merajuk

Eco Wise Workshop Master the Art of Crafting Eco Friendly Bamboo Cutting Boards from Scratch!

A Whip Moves Faster than the Speed of Sound?! / Mr. Denjiro's Happy Energy! #743

The Science behind Flying Discs / Mr. Denjiro's Happy Energy! #769

HUGE Magnet VS Copper Sphere - Defying Gravity- Will a Neodymium Magnet Float Inside?

科学クッキング/science cooking

Electromagnetic Aircraft Launcher

I made a nail wave machine