Cool Science Page

Hello there, In this Halloween season, I made a mini game. It name is "The Halloween". I give you it free. I think you enjoy from playing this game. How to play It's very easy. you have to collect all the jack o lanterns. But,  you have to be careful with ghost. Download Please add a comment

Welcome. Today I show you how to transmit electricity without wires. (wireless)  This is a simple circuit that work with 3v. The Transmitter You need :- any kind of npn transistor that work with 3v (2SC828, D400, BC547) 1K resistor thin copper magnet wire (I found that from old transformer)                 Coil wind 30 turns from any magnet wire that you found.Now tap it by 15 t and it connect to positive of battery The Receiver You need :-     LED (any colour) magnet wire You Can Use It for..... Wireless battery charger Wireless Lamp