Circadian Rhythms - Natures Time Keeper

Circadian rhythms are important in determining human sleeping patterns. Shifting into or out of daylight savings time, traveling across time zones (which can cause jet lag), or working at a job that involves late evening or night time work can affect the body's circadian rhythm.

In a person with a circadian rhythm sleep disorder, the body is unable to maintain its normal rhythm. The natural sleep schedule changes so that the person is out of phase with day and night.

Light around 460nm (blue) is needed to set the internal clock to the day cycle or time schedule appropriate to where the person is.

Photopic Vision: is the term for human colour vision under normal lighting conditions during the day. In the range above 3.4 cd/m2, the human eye uses three types of cones to sense light in three respective bands of colour. The pigments of the cones have maximum absorption values at wavelengths of about 445 nm (blue), 535 nm (green) & 575 nm (red). Their sensitivity ranges overlap to provide continuous (but not linear) vision throughout the visual spectrum. The maximum efficacy is 683 lumens/W at a wavelength of 555 nm (yellow).

Mesopic Vision is the term for a combination between photopic vision and scotopic vision in low but not quite dark lighting situations. The combination of the higher total sensitivity of the rods in the eye for the blue range with the colour perception through the cones results in a very strong appearance of bluish colours, like those in flowers, around dawn.

Scotopic Vision: is the term for human vision "in the dark", below 0.034 lm/m2. In that range, the human eye uses rods to sense light. Since the rods have a single absorption maximum of about 1700 lumens/W at a wavelength of 507 nm, scotopic vision is colour blind. The sensitivity range of the rods makes the eye more sensitive to blue light at night, while red light is almost exclusively perceived through photopic vision.

Light Therapy and treatment using light is being thoroughly researched and pursued as a new and rapidly growing area of study and application. Particularly when seeking to manage circadian rhythm’s, proper and qualified instruction, which is not available on this web site, should be taken. Most likely the best light sources, for effect, peak at and around 460nm, sometimes known as actinic blue.

As much as possible, light "treatment" should be administered on an individual prescribed basis, we all have differing needs and bio compatibilities. We certainly don't claim an "All-in-One” solution from using sulphur plasma lighting. However, until we work out how to pipe sunlight to the dark side of Earth, we do our best to provide information that will be useful and helpful.

Much has been written about Continuous Full Spectrum Lighting (CFSL), sadly, nearly all refers to using Fluorescent Mercury or Metal Halide or Xeon lamps. Most articles written, even by experts and professional practitioners, no matter if “For” or “Against” CFSL, could not be much further from the truth. All too often, they have never even seen sulphur plasma light, they don’t know what it is and are quite ignorant of Far Eastern research and practices taking place during the last decade.

Continuous Spectrum - A spectrum having no lines or bands, especially a spectrum of radiation distributed over an uninterrupted range of wavelengths, like Sunlight.

Full Spectrum - "Full-spectrum" is not a technical term when applied to an electrical light bulb.

"Full-spectrum" is a marketing term implying that the product emulates "natural" light.
Sunlight is considered full spectrum, even though the solar spectral distribution reaching Earth varies with time of day, latitude, and atmospheric conditions, the filtered and reflected light from the sky, we call skylight. Natural "real" daylight is thus a combination of sunlight and skylight.

"Full Spectrum" is used by www.SulphurPlasma.com to define light that covers the entire spectrum from ultraviolet to low infrared. When seen on an SPD (Spectrum Power Distribution) chart there are no large or sudden variances, no surges (spikes) or drops (gaps) in power, the coloured chart must look really "Full", in all wavelengths, all colours.

To see all the colours, to examine a gemstone or a prestige car’s paintwork, to see all the fractures, blemishes or faults, no matter what colour the subject is, to visually examine anything properly and maximize ability to identify differences in colour, you need Continuous Full Spectrum Lighting (CFSL).