I just wrote somewhere that Science has solutions for just about everything and even if I didn’t write it, the ground reality remains the same. Here is another one of those innovations which gives us a solution for knowing the amount of energy consumed, all through a switch. A sparkle whilst turning the switch on or off occurs depicting the level of energy being consumed by the entire household circuit. A strong sparkle (not be confused for an electric spark over current leakage) occurs when the consumption is high and vice-a-versa when the consumption is low.
[Via]
