But what if we are still at a time where the main source of light is fire? Consider the danger of street lights not shining on dim alleys or the annoyance of not having desk lighting to enable comfortable and productive work.
The lighting industry developed in tandem with technological advancements. As a result, we can take use of artificial illumination in the most practical way. What were the lighting options before to LED lights? How did they change over time?
The Incandescent Era: A Revolution in Its Time
These days, incandescent lights might not seem like much. However, it was the buzz of the town when Thomas Edison unveiled the first useful electric incandescent light in 1987! This lighting system has now been used into a number other technologies, leading to even more astounding discoveries.
A small wire known as the filament is heated by an electric current, which is how incandescent lamps function.
Usually, tungsten, a metal with a greater electrical resistance, is used to make the filament. After that, it is shielded from oxidation by a glass bulb that has been cleaned or filled with an inert gas. The filament receives the electric current from the wires or terminals imbedded in the glass. Because of its high resistance, the filament glows or warms up, releasing light.
Unfortunately, there are a lot of problems with incandescent lights. They generate too much heat, are inefficient, and have a limited lifespan. Consequently, individuals sought to improve this technology, creating better substitutes!
Advancement in Lighting: Halogen, CFL, and Fluorescent Tubes
After incandescent bulbs, what happened next? Halogens, CFLs, and fluorescent bulbs were used to light homes and businesses prior to the introduction of energy-efficient LED lighting. What are they?
Halogen: It functions similarly to an incandescent lightbulb by heating a filament. But a halogen bulb has halogen gas, which extends its life a little.
CFLs, or compact fluorescent lamps: It's a smaller, more portable fluorescent tube. Compared to halogens, CFLs use less energy, although they take a little longer to warm up.
Fluorescent: A tube-shaped lightbulb that uses phosphorous coating and gas discharge to produce light. Out of the three, it is the most effective.
Halogen bulbs, which heat filaments to provide brightness, are essentially the same as incandescent lamps. Fluorescent tubes and CFLs are made using a separate technique that uses a gas discharge to excite the phosphorous coating.
Even while halogens, CFLs, and fluorescent tubes are more efficient, last longer, and provide more heat than incandescent tubes, they still have certain drawbacks. Mercury, which is hazardous to both humans and the environment, is present in all fluorescent lights. Furthermore, halogens rapidly lose their brightness, which contributes to landfill trash.
The Rise of LED Technology: A New Era of Illumination
LED technology was created after years of study, labour, and several mistakes!
When electricity flows through a microchip, light-emitting diodes (LEDs) emit light. Electrons in the semiconductor re-merge with electron holes as the current flows. Photons are the energy released by the coupled electrons and holes. The energy required for electrons to pass the semiconductor band gap determines the colour of the light.
Because LED light bulbs are more expensive and less brilliant, the market initially did not embrace them. But it kept evolving, bringing with it a new lighting age! These days, LED lighting is more reasonably priced and comes with a range of colour temperatures, special functions, amazing designs, and more. Furthermore, LED lighting is more energy-efficient (using around 80% less energy than incandescent lights) and lasts longer (about 50,000 hours).
LED Lighting Today: Why It's the Superior Choice
Why should you choose LEDs over incandescent, halogen, CFL, fluorescent, and LEDs? Three things: innovation, more cost reductions, and a beneficial environmental effect!
Your carbon footprint may be greatly reduced using LED technology. A longer lifespan results in less waste, and less energy equals less burning of fossil fuels. Furthermore, harmful substances like mercury are absent from LED lamps!
