What is LED Light Bulb? Today’s light bulbs are primarily light emitting diodes (LED). LED bulbs fit standard light sockets and are the most energy-efficient light bulb option. They have lower wattage than incandescent bulbs but emit the same light output. This allows them to produce the same amount of light but use less energy. LEDs can last 20 plus years and don't contain mercury. LED bulbs use an electrical current passed through semiconductor material to illuminate the tiny diodes called LEDs. The heat produced is absorbed into a heat sink, keeping the bulbs cool to the touch. LEDs are...
