What is light bulb CFL?
Before we had LEDs, there were compact fluorescent lamps, or CFLs for short. CFLs are fluorescent lamps that emit light from a mix of phosphors inside the bulb, and were designed to replace incandescent lamps (a lamp that produces light as a result of being heated).
What are the benefits of CFL bulb?
The advantages of compact fluorescents are they are energy efficient, compact in size, have good lumen maintenance, long life, endless shapes and sizes, dimmable, easy retrofit, low operating cost, and radiate less heat. Compact Fluorescent bulbs are about 4 times as efficient as incandescent bulbs.
What are CFL bulbs made of?
CFLs use much less energy and last up to 10 times longer than standard light bulbs. What is in a compact fluorescent lamp (CFL) bulb? A CFL bulb is made of glass, a ceramic and metal base, a luminous powder called phosphor, and a small amount of mercury.
Is CFL light safe?
CFLs are marketed as “safe” and don’t pose any health risks as long as the glass remains intact. The danger comes if the bulbs are cracked, broken or not disposed of properly.
How does a CFL work?
How Do CFLs Work? In a CFL, an electric current is driven through a tube containing argon and a small amount of mercury vapor. This generates invisible ultraviolet light that excites a fluorescent coating (called phosphor) on the inside of the tube, which then emits visible light.
What is difference LED and CFL?
To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semiconductor material. A CFL is less energy-efficient as compared to an LED lamp.
Why mercury is used in CFL?
Mercury, an essential part of CFLs, allows a bulb to be an efficient light source. No mercury is released when the bulbs are intact (i.e., not broken) or in use, but mercury vapor and very small beads of mercury can be released when a CFL is broken.
How are CFL made?
Compact fluorescent bulbs are made of glass tubes filled with gas and a small amount of mercury. CFLs produce light when the mercury molecules are excited by electricity running between two electrodes in the base of the bulb.
Do CFL bulbs emit UV?
Do CFLs emit UV? All fluorescent lamps emit some UV. Typical fluorescent lamps, including CFLs, which consumers would encounter, emit very low levels of UV. In order to measure any UV radiation from these lamps, very sensitive measuring equipment must be used.
Is CFL bad for health?
While mercury is a highly toxic substance, only a very small amount is used in a CFL, about the amount to cover the tip of a ballpoint pen. There is no risk to your health when the lamps are unbroken. Even when a CFL is broken, there is a very low risk to your health, unless you mishandle it or store it carelessly.
Why is mercury used in CFL bulbs?
Mercury is an essential element in the operation of fluorescent lighting; it allows the bulbs to be an efficient light source. Because CFLs contain trace amounts of mercury, it is important to educate yourself on proper use, recycling and disposal of these products.
