Dim Light Shining Bright Patrick Smith, Danielle Gennett, Ryan McCarter, and Aaron Clevenger

Design Materials 4 small magnets Plexi-glass Conductive wire Brass rod Plastic Blades LCD light

Design Windmill Large plastic blades Blades attached to rod Rod attached to generator Generator 4 magnets tied around cardboard and rod Held in place by plexi- glass and duct tape Wire wrapped many times around plexi-glass

Mechanical Aspects Wind blows blades by applying force on them Causing blades to turn forwards by curvature of blades As blades turn, they cause the rod to turn Rod then moves magnets centered in the wire

Electrical Aspects If a circle of wire surrounds a magnetic field, and if the field changes, voltage appears The faster the magnetic field changes, the larger the voltage causing the light to get brighter and brighter Wire is wrapped many times around magnets because each wrap creates a small voltage which when added together, creates a large enough charge to light the bulb

Calculations

Design/Construction Issues Plastic instead of sheet metal for blades Plexi-glass is strong Magnet around coil instead of magnets inside coil Keeping magnets centered around bar Blades kept coming undone

Conclusions Simple to make Lights the bulb Parts aren’t very expensive Parts could be made from anything if not bought Not very high efficiency