Ultraviolet Light Therapy

Ultraviolet light therapy or ultraviolet Phototherapy is a form of treatment for certain skin disorders (including atopic skin disorder and vitiligo when used with psoralen to form the PUVA treatment) It consists mostly of the UVA band of ultraviolet light (fairly closely matching the ultraviolet output from the sun) and is usually delivered from a fluorescent bulb specially designed to output this frequency of ultraviolet.

This treatment is similar to the light from good quality solariums but differs from the mainly UVB ultraviolet band used to treat psoriasis.

Other articles related to "light":

Speed Of Gravity - Lorentz Covariant Models
... concept of local time (based on synchronization by light signals) and the principle of relativity ... could communicate by signals other than those of light, the velocity of propagation of which differed from that of light? If, after having regulated our watches by the optimal method, we wished to verify ... is transmitted with a velocity a million times as great as that of light? However, in 1905 Poincaré calculated that changes in the gravitational field can ...
Color Temperature - Color Rendering Index
... The CIE color rendering index (CRI) is a method to determine how well a light source's illumination of eight sample patches compares to the ... Cited together, the CRI and CCT give a numerical estimate of what reference (ideal) light source best approximates a particular artificial light, and what the difference is ...
Flash - Light
... source of very short and extremely bright flashes of light Arc flash, an electrical explosion Lightning, a natural phenomenon Muzzle flash, the visible light of the muzzle blast ...
Correlated Color Temperature - Motivation
... Black body radiators are the reference by which the whiteness of light sources is judged ... By analogy, nearly-Planckian light sources such as certain fluorescent or high-intensity discharge lamps can be judged by their correlated color temperature (CCT) the color temperature of the Planckian ... The question is what is the relationship between the light source's relative spectral power distribution and its correlated color temperature? ...
Historical Theories About Light, in Chronological Order - Electromagnetic Theory As Explanation For All Types of Visible Light and All EM Radiation
... Michael Faraday discovered that the plane of polarisation of linearly polarised light is rotated when the light rays travel along the magnetic field direction in the presence of a transparent dielectric, an ... This was the first evidence that light was related to electromagnetism ... In 1846 he speculated that light might be some form of disturbance propagating along magnetic field lines ...

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