Transistors It is such an electronic device made of p and n-type semi conductor which is used in place of triode bulb. It was invented in 1948 by American scientists…
p-n junction diode is a basic semiconductor device. It is a semiconductor crystal which has an excess of acceptor impurities in one region and donor impurities in the other region.…
Conductors, Insulators and Semiconductors Most solids can be placed in one of two classes, conductors and insulators. Conductors are those in which electric charges can flow easily, while insulators are…
Roentgen's discovery of X-rays Roentgen's discovery of X-rays :- In 1895, the German scientist Rontgen observed that when a fast moving cathode ray collides with a piece of metal having…
Chemical Compound - Salammoniac Sal Ammoniac Ammonium Chloride : NH4Cl Ammonium Chloride is a chemical compound which found in abundance in nature. Ammonium chloride is obtained when ammonia gas is…
Hard Water and Soft Water On rubbing soap with water, it is seen that sometimes it soapsuds Seasily, sometimes with difficulty. Due to this property, water is divided into two…