How many people does it take to
change a light bulb? Our best guess is a few thousand engineers working endless
hours to develop better lighting that benefits all of us. Sorry, you were
probably expecting or hoping for a much more humorous answer.
It seems like there is a
constant changing of what the best lighting is – Incandescent, Fluorescent, and
now LED. It can sometimes make your head spin. For years incandescent light was
the only game in town for residential lighting, then Halogen lighting was
introduced with the acclaim that it produced brighter lighting at less wattage.
As we became more conscious of energy usage, fluorescent lighting in the form
of compact fluorescent lights (CFL) came to fame. CFL’s provided energy efficient lighting that did not need
special fittings to use. They could directly replace a standard incandescent
bulb. The downside to CFL bulbs was that they were expensive and they also
contain mercury – not the best thing when you are advertising the ECO benefits
of using less energy then adding mercury to the environment. Over time the cost
of CFL bulbs came way down to be just slightly more than a standard
incandescent bulb.
We have now moved into the next
phase of lighting technology, LED or Light Emitting Diodes. While LEDs have
been around for a while they can now be fit into standard light outlets making
it very easy to change out your lighting. The path of the LED is much like the
CFL. The first generation of bulbs that were introduced were very expensive but
are now becoming more and more affordable.
What makes a LED bulb attractive
is it uses a fraction of the energy (watts) to provide the same amount of
lighting as even a CFL. For instance, a 6 watt LED bulb will produce about the
same amount of light that an 18 watt CFL or a 60 watt incandescent bulb will.
That is about 1/3 a CFL and 1/10 of an incandescent bulb. Think of replacing a
main light in your home with a LED at 1/10 of the operating cost. Over the
course of time, that can really add up. The other main benefit of LED bulbs is
that they last longer. Now there are companies out there that claim their bulbs
will last 20, 30, 40 years. While we might not be 100% convinced that a bulb
will last 40 years, it is a proven fact that LED bulbs will last considerable
longer than both incandescent and CFL bulbs. This helps justify the added
upfront cost of LEDs.
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Totally agree! LEDs have lower energy consumption, longer lifetime, improved physical robustness, faster switching and are very small, which in many peoples opinion, makes them far superior to incandescent light sources. LED or Light-emitting diodes are used in the home, aircraft, vehicle headlights, camera flashes, advertising boards and many more.
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