LIGHTS OFF WHEN NOT IN USE..

LIGHT COMES EITHER FROM SUNLIGHT OR GENERATED.

THIS MEANS THAT LIGHT COSTS MONEY. BUT WHY?

TO HAVE LIGHT IN OUR HOMES, IT IS GENERATED AND SO WE BUY IT. WHEN WE ARE NOT IN THE ROOM, WE NEED TO SWITCH OFF THE LIGHTS.

IF IT IS SUNLIGHT, WE BETTER OPEN THE CURTAINS TO SEE LIGHT RATHER THAN SWITCH ON THE LIGHTS.

NOWADAYS, THERE IS THE PV SYSTEM TO HELP GENERATE FROM SUNLIGHT TO LIGHT IN OUR HOMES.

BENJAMIN FRANKLIN IS THE PERSON WHO

INVENTED AND DISCOVERED ELECTRICITY.

NEXT TIME YOU USE LIGHT, WHEN YOU'RE DONE DON'T FORGET TO SWITCH OFF THE LIGHTS!