Monday, July 28, 2014

The light consists of a spectrum of different colored light rays having different wavelengths. As h


Nor is it alone in their concerns about modern bulbs. Another eminent British professor, John Hawk, an expert in skin diseases, is warning that could cause damage to sunburn, premature aging and even skin cancer. space lighting
Incandescent bulbs are the standard form of lighting for over a century. But following an EU directive, the government banned the import of 100-watt bulbs from 2009. This was followed by a ban on 60W bulbs in 2011 and a total ban on all "traditional" light bulbs in 2012 .
The EU directive aimed to reduce fuel emissions and carbon. The light bulbs - or compact fluorescent lamps (CFLs), to give its technical name - is said to use 80 percent less electricity and last longer.
Instead of a filament, light bulbs have mercury vapor and argon in a tube in a spiral. When the gas is heated, produces ultraviolet light. This stimulates a fluorescent space lighting coating painted on the inside of the tube. As this layer absorbs energy, emits light.
The concern is about some of the light rays emitted at high levels space lighting of these bulbs, says Professor Marshall. Recent scientific evidence shows that these specific rays are particularly harmful to the human eye and skin.
The light consists of a spectrum of different colored light rays having different wavelengths. As he explains: "Light is a form of radiation. The shorter the wavelength, the more energy it contains. 'The most damaging part of the spectrum is the light of short wavelength in indigo space lighting / violet end of the blue. 'Incandescent bulbs do not cause problems, but these energy saving lamps emit high peaks of the blue and ultraviolet light at this wavelength. "
The retina at the back of the eye is vital to the sight - comprises light sensitive cells that trigger space lighting nerve impulses passing through the optic nerve to the brain, space lighting where the visual images are formed.
Sustained exposure to wavelengths of ultraviolet light from CFLs increases the risk of two diseases of seriously debilitating eye, macular degeneration space lighting and cataracts, claims teacher.
Macular degeneration, the macula, which is at the center of the retina is damaged with age. A cataract is a clouding of the eye lens. These are two of the leading causes of blindness in the UK.
"If you are in a country with high levels of ultraviolet light, the eyes age faster," he says. 'This is why the incidence of cataracts is anterior space lighting and superior near Ecuador, where sunlight is strongest, so that more light through all spectra. CFLs can have a similar effect.
'Exposure can also significantly increase the risk of macular degeneration. The greatest risk factor for this is the age, since typically begins to affect space lighting people between 60 and 80.
"It's almost certainly exacerbate that risk with light bulbs," the professor, who last month warned his colleagues of the dangers in Optrafair, a national education forum for opticians.
Professor John Hawk, the retired chief Photobiology Unit in San Juan Institute of Dermatology, King's space lighting College, London, says: "There is good evidence that CFLs that have been imposed on us emit radiation enough to cause skin damage space lighting if used close long enough. "
"There is evidence that the lamps can not only cause damage to the skin, but also the short-term symptoms such as rash and prickly heat sun, a condition medically known as polymorphous light eruption. 1801
'As with any UV damage, these effects may increase with age. The cumulative effect of this ultraviolet light causing burning, damage skin cells and aging skin, is to be in some small but significant extent, increase the risk of skin cancer. "
The low-energy light bulbs are also known to cause problems for people with lupus, an autoimmune disease that typically affects the skin, joints space lighting and internal organs. Irritation caused by ultraviolet space lighting light worsens the rash, joint pain and fatigue associated with the disease.
The EU has recognized that exposure to low co bulbs

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