MAKE A LIGHT BULB

 MAKE A LIGHT BULB

Materials you will need to make a bulb

• One small jar
• Cork stopper for a lid
• A 1-inch nail
• Three feet of shielded copper wire
• One 6-volt battery--not a car battery!  
• Thin iron wire (the best source for this is unraveled picture hanging wire) 

Procedure  

• First cut the copper wire into two lengths about 1-1/2 feet long. Cut off an inch of the shielding (plastic coating) at each end of the strands.
• With a nail, drill two holes into the cork.  Push the wire through the holes in the cork so that about two inches of the wire can be seen in the jar.
• Make a hook at the end of the copper wires so that you can twist small strands of iron wire around them to make a filament.
• Twist several strands of iron wire together and stretch them across the gap between the two copper hooks to form the filament.
• Put cork stopper with filament inside the jar.
• Carefully hook up both copper wire ends to the battery and watch your bulb light up! 

Be careful the filament becomes very hot. Do not touch.

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