Radio Waves. A form of radiant energy that can neither be seen nor felt. Radio Frequency Carrier Shift. The big advantage over a normal drill is that it can be charged up in seconds rather than hours. If you need to store a reasonable amount of energy for a relatively short period of time (from a few seconds to a few minutes), you’ve got too much energy to store in a capacitor and you’ve not got time to charge a battery, a supercapacitor may be just what you need. In marked contrast, a typical supercapacitor can store a charge thousands, millions, or even billions of times bigger (rated (...)