18 Watt 600mm Fluorescent Daylight T8 tube
These daylight bulbs have a colour Temperature equivalent to Noon daylight, and produce excellent colour rendering and contrast for reading and working. Especially useful in rooms or offices with limited natural daylight. Improve your mood and productivity with these full spectrum daylight tubes every day!
* Convenient source of full spectrum light at any time
* Colour Temperature equivalent to Noon daylight (6,000 Kelvin)
* CRI (Colour Rendering Index) of 95
* Full rainbow colour spectrum with accurate natural colours
* High contrast improves visibility and reading comfort
* Work will all standard fittings and ballasts.
Until 150 years ago most people worked outdoors, and obtained enough natural sunlight every day of the year. Windows filter out many parts of the light spectrum. Professor Dr. Fritz Hollwich, Director of the University Eye Hopsital in Munster, discovered that only around 25% of the light absorbed by our eyes is used directly for vision, the other 75% travels via the optic pathways to the brain and hypothalmus - the body's chief control system. This controls the nervous system and endocrine system, affecting amongs other things our glandular and hormone system.
Irradiation with sunlight increases the number of white blood cells, most of the lymphocytes, causing an upsurge in the defences against infectious diseases. It also stimulates the formation of Interferon, thereby preventing viruses from proliferating. Our bodies need clear information about day and night in order to regulate our waking and sleeping phases and the biorhythms associated with this. When it is dark more melatonin is produced, which signals to the body that it is time to sleep. On the other hand bright full-spectrum light suppresses the production of melatonin. If parts of the light spectrum are missing, the body can enter a twilight state, comatose, neither fully awake nor asleep. To summarise the human body has developed over millions of years with daily exposure to natural sunlight. Working indoors has removed much of this natural resource from our lives, but it can be closely replicated with full spectrum bulbs.