What proportion of UV should full spectrum light ideally contain?
Everything depends on the correct dosage. A certain amount of the right components of UV radiation is very important for our health (cf. Dr. Zane R. Kime: “Sunlight Could Save Your Life”). Since the hole appeared in the ozone layer, more and more very short-wave UV-C rays have been hitting the Earth’s surface. Previously we had been protected from these by the atmosphere. The damage that they cause is generally bringing UV light more and more into disrepute. About 4% of the total brightness of light emitted by LifeLite lamps (measured in lux) is UV-A and UV-B, which means that they fall below the legally prescribed limits for fluorescent tubes and energy saving light bulbs. Approx. 6% of sunlight is UV. However, the main difference is that LifeLite lamps have a luminous intensity of 2,000 lux maximum at a distance of ½ metre, whilst the sun has a luminous intensity of between 50,000 and 100,000 lux depending on the time of year. In addition the LifeLite lamps do not include a UV-C comp
Everything depends on the correct dosage. A certain amount of the right components of UV radiation is very important for our health (cf. Dr. Zane R. Kime: Sunlight Could Save Your Life). Since the hole appeared in the ozone layer of our atmosphere, more and more very short-wave UV-C rays have been hitting the Earth’s surface. Previously we had been protected from these by the atmosphere. The damage that they cause is generally bringing UV light more and more into disrepute. LifeLite lamps emit about 4% UVA, about 0,2% UVB and no UVC. Sunlight measured over Stuttgart, Germany (abot 49 degree latitude) on July 27, 2005 at noon time on a clear sky emitted about 5,4% UVA, 1,2% UVB and about 0,2% UVC. (see spectral analyses) However, the main difference is that LifeLite lamps have a luminous intensity of about 2,000 lux maximum at a distance of metre, whilst the sun has a luminous intensity of 50,000 and 100,000 lux depending on the time of year. In addition the LifeLite lamps do not have a
