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to attract flies. The center wavelength for most actinic light products is 420 nanometers, with longer wavelengths regarded as "royal blue" (450nm) to sky blue (470nm) and cyan (490nm) and shorter wavelengths regarded as "violet" (400nm) and blacklight (365nm). Actinic light centered at 420nm may
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Actinic lighting is also a great alternative to black lights as it provides a "night environment" for the fish, while still allowing enough light for coral and other marine life to grow. Aesthetically, they make fluorescent coral "pop" to the eye, but in some cases also to promote the growth of
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Actinic lighting is also used to limit algae growth in the aquarium. Since algae (like many other plants), flourish in shallower warm water, algae cannot effectively photosynthesize from blue and violet light, thus actinic light minimizes its photosynthetic benefit.
239:(shorter-wavelength light). This would render a print of the red areas as a very dark tone because the red light was not actinic. Typically, light from xenon flash lamps is highly actinic, as is daylight as both contain significant green-to-UV light.
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was the first to correctly theorize that each photon would be able to cause only one molecular reaction. This distinction separates photochemical reactions from exothermic reduction reactions triggered by radiation.
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Actinic inspection of masks in computer chip manufacture refers to inspecting the mask with the same wavelength of light that the lithography system will use.
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to distinguish light that would expose the monochrome films from light that would not. A non-actinic safe-light (e.g., red or amber) could be used in a
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In chemical terms, actinism is the property of radiation that lets it be absorbed by a molecule and cause a photochemical reaction as a result.
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industry. They are used to promote coral and invertebrate growth. They are also used to accentuate the fluorescence of fluorescent fish.
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across the color spectrum. In photography, therefore, actinic light must now be referenced to the photographic material in question.
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In the first half of the 20th century, developments in film technology produced films sensitive to red and yellow light, known as
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In medicine, actinic effects are generally described in terms of the dermis or outer layers of the body, such as eyes (see:
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is found, for example, in the terminology of imaging technology (esp. photography), medicine (concerning sunburn), and
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Early "non colour-sensitive" (NCS) films, plates and papers were only sensitive to the high-energy end of the
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deeper-water coral adapted to photosynthesis in regions of the ocean dominated by blue light.
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is commonly used to describe the actinic responsivity of photographic materials.
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appear to the naked eye as a color between deep blue and violet.
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84:ἀκτίς, ἀκτῖνος ("ray, beam"). The word
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393:"Resources - What is Actinic Lighting?"
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381:The Correct Lighting for Your Aquarium
335:The International System of Units (SI)
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420:Dictionary of Photography
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290:In artificial lighting
176:Actinic conjunctivitis
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403:2014-12-02
321:References
193:In biology
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727:Radiation
256:lightness
252:infra-red
185:The term
103:Actinic (
100:imaging.
90:chemistry
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737:Lighting
601:Infrared
472:ionizing
303:See also
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86:actinism
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480:Sunburn
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