Light bulbs are like tiny magic suns inside your house! 🌟 When you turn on the switch, electricity flows through a special wire inside the bulb called a filament. This wire gets so hot that it glows brightly, just like the sun! That's how we get light.
Without electricity, the bulb stays dark, but when you flip the switch—ta-da!—it lights up your room!
Light bulbs work by using electricity to create light! Inside the bulb, there's a thin wire called a filament. When you turn on the switch, electricity flows through the filament, heating it up until it glows—just like a tiny piece of the sun! 🔥
Most bulbs also have a special gas inside (like argon) to help the filament last longer. Some newer bulbs, called LEDs, don't even use a filament—they make light using tiny electronic parts!
Light bulbs convert electrical energy into light through a process called incandescence or electroluminescence. Traditional bulbs (incandescent) have a tungsten filament that heats up to about 2,500°C when electricity passes through it, emitting visible light. However, 90% of the energy is wasted as heat! 🌡️
Modern bulbs, like LEDs (Light Emitting Diodes), work differently. They use semiconductors to produce light efficiently, wasting very little energy. Another type, CFLs (Compact Fluorescent Lamps), use gas and a phosphor coating to create light.
Here’s a quick comparison: