It’s hard to believe that the technology used in the display of a calculator is now being used to illuminate entire cities. Even more impressive, perhaps, is the fact that this same technology conserves a significant amount of energy. Just what could this innovative technology be? Three letters: LED. LED (light emitting diode) lights have been around since the early twentieth century, but the magnitude of their power was not discovered until recently. How did this evolution of LEDs occur? . . .
The magical sight of Christmas lights certainly has come a long way, from the candles of the seventeenth century to the impressive electric displays of today. Even more impressive, perhaps, is the newest form of Christmas lighting that’s sweeping the nation: solar powered Christmas lights. Just how did this evolution of Christmas lights take place? Enlighten yourself with the history of Christmas lights. Blazing Beginnings: As early as the seventeenth century, the wealthiest of Germans . . .