Capacitors: Some of the earliest capacitors were simply glass jars filled with salt water and wrapped in metal foil. These capacitors - called Leyden Jars - were crude devices which stored high voltage electric charge. They helped early experimenters gain a gra…

Supercapacitor USB Light: For those who never heard about supercapacitor, you can check for more info about supercapacitor here. Supercapacitor is basically a capacitor with very high capacity, and the capacity rating is normally around few Farads. With the “super” capacity,…