43:22

What determines the size of an atom?

18:46

Monster Copper Wind Chimes - DIY - Part 5

11:11

I 3D Printed TWO Life-Size WIND TURBINES - BIGGEST PRINTS I HAVE EVER MADE

12:43

Involute VAWT

27:37

New "Tesla Turbine" Design, Full Test And Build. NEW Design Starts Under Load.

17:42

How to build an Autonomous UAV for Long Range FPV & Waypoint Missions - Lightweight UAV

10:49

New Large Sharp VAWT - Build Details

31:19

The Use Of Drones is Reaching a New Level - Incredible Innovations.