HOME FLASHLIGHT

Materials:

- A led light

- Two copper cables

- Scotch tape

- A folio (A4 paper)

- Two double A batteries

Process:

The first thing to do is to hook a copper wire to the positive side of the led diode and another wire to the negative side. For this, it is necessary to know that the long pole of the diode corresponds to the positive side and the short pole, next to negative. To fix them well and so that both sticks do not touch, we must cover each independently with tape. Then we put more tape around the two.

When we have it ready, we put it away and we will prepare the batteries. We need two double A batteries because the LEDs are 3 volts and each battery has 1.5. Put the two batteries in series and tape them together.

The next step is to join the cable corresponding to the positive side of the led with the positive part of the battery, ie the top, as you can see in the following image. So that they do not separate, we will fix it with tape.

The cable corresponding to the negative side will not be fixed with tape on the other side of the battery because in that case, the flashlight would always be on. So, let's leave it loose for us to switch to:

When we want to turn on the flashlight, we only have to have the cable and the negative side of the battery together.

The next step is to wrap our mechanism in a folio, to cut the excess part of it and to fix it with adhesive tape. Our home lantern would be ready!

Now, simply, we have to turn out the lights and see all that we can illuminate with our paper lantern. As you can see, despite being made with a single led, our home lantern is able to light a large part of the room with enough power.

As you can see, it is a very simple experiment to do and can be a good technology project that everyone can do at home or for some class work. It is also very cheap.