Step 1: Stuff needed.
3]D sized batteries 8pcs.
Step 2: Attaching the cells.
Step 3: The bulb.
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.