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The UV index is a number linearly related to the intensity of sunburn-producing UV radiation at a given point on the Earth's surface. It cannot be simply related to the irradiance (measured in W / m 2 ) because the UV of greatest concern occupies a spectrum of wavelengths from 295 to 325 nm, and shorter wavelengths have already been absorbed a ...
These secondary metabolites that provide plants with protection are commonly used in human sunscreen and pharmaceutical drugs to supplement the inadequate light protection that is innate to human skin cells. [9] Various pigments and compounds can be employed by plants as a form of UV photoprotection as well. [10]
Diode array detectors (DADs) collect entire UV spectra at every point of the eluting peaks while operating as a multi-wavelength UV-Vis detector. This way they give additional information, which help understand more about the nature of the substances appearing in the chromatogram and allow their identification. [6]
Also, quality UV filters offer some protection against lens contamination while minimizing the inherent additional distortion. In photography, the term "UV filter" can also be misused as a filter that passes UV light while blocking other wavelengths in the light spectrum, in the same way, the term " IR filter " is used for filtering the entire ...
SmartWater is a clear, water-based liquid containing an identifying code that can be viewed under ultraviolet light. [6] It is intended to be applied to valuable items, including equipment at construction sites, merchandise in retail stores, and vacant residential or commercial properties. [7]
Hindered amine light stabilizers (HALS) are chemical compounds containing an amine functional group that are used as stabilizers in plastics and polymers. [1] These compounds are typically derivatives of tetramethylpiperidine and are primarily used to protect the polymers from the effects of photo-oxidation; as opposed to other forms of polymer degradation such as ozonolysis.
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Solar-blind technology is a set of technologies to produce images without interference from the Sun. This is done by using wavelengths of ultraviolet light that are totally absorbed by the ozone layer, yet are transmitted in the Earth's atmosphere.