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Winners
Omni Directional Wind Generator
Simple Backyard Wind Turbine
Wooden Multi plug
Make a voltmeter
INTRODUCTION:
Free Battery powered Fan with 20 hour life
Homemade Solar Suitcase!
Helical Vawt (blades and charge controller)
Oil Lamp
Black Powder
Solar Power Plant
3 mini motores
Power your USB Devices with a 6-24V power source like solar panels
Very simple wind turbine
Compost Heating System
Homemade solar cell using household items (update)
Maquina Térmica
Energy Efficiency of Bringing Water to the Boil
Build Your Own Batteries!
3 mini motors
Algae to oil - simple setup
Máquina Térmica
Máquina Térmica
Como fazer uma máquina térimca
Como fazer uma máquina térmica
Thermal Machine
Máquinas térmicas - vela que gira
Expansão Gasosa
Máquinas Térmicas - Como fazer uma latinha giratória !
Maquina Térmica
Anemometer....
MÁQUINAS TÉRMICAS - BARCO A VAPOR
Máquina térmica 22 I Grupo: 6, 25, 28 e 41
Maquina Térmica
Máquina Térmica
Another Way To Make Your Bed Warm
Latinha Giratória
Como construir um barquinho pop-pop
Como construir uma máquina térmica
$30 Vertical Axis Wind Turbine From Scrap Materials
Steam Powered Smart Phone
Electric Science Project With A Series Possible Future.
Create large refuelable metal-air battery.
Peltier chips In a cars radiator
Trapped Ceiling Heat
Make An Old House More Energy Efficient With Inset Storm Windows
Vacuum Formed Windmill
DIY Solar Oven
How to build a Rocket Mass Heater
Ar condicionado caseiro
Thermoelectric generator (Heat to Electrical power)
Gummy bear explosion :D
How to Make your Own Biodiesel:
How to make a smoke bomb
Easy Film Can AA Battery Holder
Bio Gas Cannister/Collector. (Improvised)
Bio Gas Generator. (Small)
Teen Romance Card Party
Wind Turbine/s For Free! (Small 8"inch Blades)
Playing with Chemicals
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