Hi. this is my first project ever uploaded on net.In this instructable, I am gonna tell you how how to make your own light bulb.

Step 1: Stuff Needed.

1]Pencil lead 0.5 mm.
2]Alligator wires.
3]D sized batteries 8pcs.
4]Glass jar.
5]Duct tape.
6]Cardboard pipe.

Step 2: Attaching the Cells.

Attach the cells point to point in series and secure them with electric tape.

Step 3: The Bulb.

Take 2 alligator wires and fix them at the ends of the cylindrical area of the cardboard pipe and secure them with duct tape.
Hook up a pencil lead to the alligator wires attached to the cardboard pipe and cover the assembly with a glass jar and ensure that the other ends of the alligator wires come out.
That's all ,you are done.
Now touch the other ends of the alligator wires to the battery.
What do you observe?
Does the lead glow yellow and pop out after some time?
If yes, then your test is successful.