LDR... A new way to save energy.

I am introducing here about a way to save energy for our future. We know that we are depending other countries for energy. We are losing energy for street lights. When we put on it at night, it will glow through out at least 18 hours. So we need to save energy or prevent wastage of energy. So I am introducing a way to save energy and prevent wastage of energy. he heart of this project is LDR(Light Depended Resistor) It will conduct electricity at morning and work as resistor at night. So we need to make a circuit for LDR. It is pretty easy.So we need to connect it to a relay. LDR will conduct electricity at morning. But we need to make reversed. So in a relay there is a coil inside it. When electricity is applied, the coil will shrink and conduct electricity. here is three output line. Common, NC and NO. When electricity is applied NC will conduct and NO will not conduct. So we need to take output from NO contact. Because when there is no light(night0 it will not conduct. So the NO will conduct. So we need to take output from NO. If we apply this way in our daily life, we can save energy for future. So we can make this in the front of the ministry and can save energy for future. So we can go as one and make our troop success. So let us do that.
                                                                                                   KIRAN G KRISHNAN
                                                                                                  STD 8
                                                                                                  JAYAKERALAM HSS
                                                                                                  PERUMBAVOOR
                                                                                                  KERALA, INDIA