visit my profile:http://www.instructables.com/member/argha+halder/ to see some more of this type of interesting projects
Step 1: Things you will need
1)some thin wire.
2)a white or blue led.
3)a 1000 ohm resistor.i got mine from a toy.so leads are small.
4)any npn trnsistor-1.(but transistors like 2n3904 or 2n4401 or bc337 etc are good choice)but if you use pnp transistor you will have to reverse the polarities.
5)a ferro magnetic core like toroids.if you dont have toroids then take the circuit of a decreased fluorecsent bulbs .there you will see one type of round nut wrapped in wire.there you have your toroid.
6)an aa battery
tools you will need:
soldering iron or pliers
beside the things picture you may see white dots.those are reflections of flashlights.