Electric current is the directed movement of charged particles. It arises on condition of existence of potential difference, i.e. in the presence of voltage. Electric energy, is developed in large numbers at various power plants, but being for many kilometers from a civilization, there will hardly be a wire, such are long to reach the next socket. And electricity in small quantities, it is possible to get in the nature.
It is required to you
- Aluminum pin, copper pin, transistor, water, salt, copper wire, aluminum foil.
Instruction
1. Take the aluminum or iron pin and thrust it in a tree, thrust deeply that the pin passed through bark through and on impressive distance got into a trunk. Then, thrust the copper pin to the earth, approximately on 30 centimeters. If you insert not one pin into a tree, and a little, then electricity will be more. Tension between pins, will be about 1 volt.
2. Take the silicon or germanic transistor and open it, but do not damage a crystal in the case. Attach wires to any of transitions, "emitter base" or "collector base". On sunny day, the opened transistor can replace a photo cell, between wires there will be tension, from 0.1 to 0.2 volts. From several transistors it is possible to assemble the battery, but assembling it, at all transistors it is necessary to choose one certain transition.
3. Take several glasses and fill them with solution of table salt. Further, take several pieces of a copper wire and wind one end of each piece with aluminum foil. Connect glasses to solution wire pieces that in one glass the wire was located with the bared end, and in another wrapped up in a foil. Voltage depends on the number of glasses.