Ultraviolet radiation itself is invisible to the human eye, but illuminating certain materials with UV radiation prompts the visible effects of fluorescence and phosphorescence. Black-light testing is commonly used to authenticate antiques and banknotes. It is extensively used in non-destructive testing; fluorescing fluids are applied to metal structures and illuminated with a black light, whereby cracks and other artifacts can easily be detected. It can also be used to detect pet excreta for removal, such as urine, vomitus and other substances that are not always visible to the naked eye.
It is also used to illuminate pictures painted with fluorescent colors (preferably on black velvet to intensify the illusion of self-illumination). The fluorescence it prompts from certain textile fibers, especially those bearing optical brightener residue, is also used for its recreational effect (as seen for instance in the opening credits of the James Bond film A View to a Kill).
In forensic investigations, black lights are used to reveal the presence of trace evidence, such as blood, urine, semen, saliva, and other bodily fluids, by causing visible fluorescence in these substances. The use of this technique by exposé-styled television news magazines for reporting on the various unsanitary and mysterious stains found in hotel rooms has become such an oft-repeated stunt that it has been lampooned on comedy shows such as Family Guy, The Office (US) and The Upright Citizens Brigade.
In medicine, the Wood's lamp is used to check for the characteristic fluorescence of certain dermatophytic fungi such as Microsporan species which emits a yellow glow, or corynebacterium which have a red to orange color under the Wood's lamp. It is also used to detect the presence and extent of depigmenting disorders such as vitiligo. It can also be used to diagnose ringworm, fungal infections, corneal scratches, foreign bodies in the eye, blocked tear ducts, acne, erythrasma, tinea versicolor, microsporum canis, scabies, alopecia, porphyria, bacterial infections, and many other skin conditions[1][2].
In security, a pen with a fluorescent ink, generally a soft tip, is used to "invisibly" mark items. If the items are stolen then a black light can be used to search for the security markings. At some theme parks, a fluorescent mark is rubber stamped onto the wrist of a guest who needs to leave – for example for dinner – and intends to return later in the business day; in this way he or she would not need to pay for a second admission.
Black lights are also used to differentiate real banknotes with counterfeit banknotes as, in many countries, real banknotes have fluorescent symbols on them that only show under a black light. Through this, security officers can check for counterfeit banknotes. The same is true checking for fraudulent identification cards.
One of the innovations for night and all-weather flying used by the US, UK and Germany during 1939-1945 was the use of UV interior lighting to illuminate the instrument panel, giving a variable-intensity alternative to the radium-painted instrument faces and pointers, without visible illumination that would give away an aircraft's position. This went so far as to include the printing of charts that were marked in UV-fluorescent inks, and the provision of UV-visible pencils and slide rules such as the E6B. However, the common failure of the light's power inverter on take-offs in bombers, and the night-blindness and crashes caused when the blacklight filter fell off on trainer aircraft, led to the system being mostly abandoned.
Black light puppetry is also performed in a black light theater.
Fluorescent makeup used for artistic effect.
"Midnight bowling" utilizing blacklights and the fluorescence of pins to enhance ambience.
Scorpion under Ultraviolet light .
Fluorescent materials used for paintings and plastic art.
Ultraviolet radiation itself is invisible to the human eye, but illuminating certain materials with UV radiation prompts the visible effects of fluorescence and phosphorescence. Black-light testing is commonly used to authenticate antiques and banknotes. It is extensively used in non-destructive testing; fluorescing fluids are applied to metal
Selasa, 20 Januari 2009
us
Ultraviolet radiation itself is invisible to the human eye, but illuminating certain materials with UV radiation prompts the visible effects of fluorescence and phosphorescence. Black-light testing is commonly used to authenticate antiques and banknotes. It is extensively used in non-destructive testing; fluorescing fluids are applied to metal structures and illuminated with a black light, whereby cracks and other artifacts can easily be detected. It can also be used to detect pet excreta for removal, such as urine, vomitus and other substances that are not always visible to the naked eye.
It is also used to illuminate pictures painted with fluorescent colors (preferably on black velvet to intensify the illusion of self-illumination). The fluorescence it prompts from certain textile fibers, especially those bearing optical brightener residue, is also used for its recreational effect (as seen for instance in the opening credits of the James Bond film A View to a Kill).
In forensic investigations, black lights are used to reveal the presence of trace evidence, such as blood, urine, semen, saliva, and other bodily fluids, by causing visible fluorescence in these substances. The use of this technique by exposé-styled television news magazines for reporting on the various unsanitary and mysterious stains found in hotel rooms has become such an oft-repeated stunt that it has been lampooned on comedy shows such as Family Guy, The Office (US) and The Upright Citizens Brigade.
In medicine, the Wood's lamp is used to check for the characteristic fluorescence of certain dermatophytic fungi such as Microsporan species which emits a yellow glow, or corynebacterium which have a red to orange color under the Wood's lamp. It is also used to detect the presence and extent of depigmenting disorders such as vitiligo. It can also be used to diagnose ringworm, fungal infections, corneal scratches, foreign bodies in the eye, blocked tear ducts, acne, erythrasma, tinea versicolor, microsporum canis, scabies, alopecia, porphyria, bacterial infections, and many other skin conditions[1][2].
In security, a pen with a fluorescent ink, generally a soft tip, is used to "invisibly" mark items. If the items are stolen then a black light can be used to search for the security markings. At some theme parks, a fluorescent mark is rubber stamped onto the wrist of a guest who needs to leave – for example for dinner – and intends to return later in the business day; in this way he or she would not need to pay for a second admission.
Black lights are also used to differentiate real banknotes with counterfeit banknotes as, in many countries, real banknotes have fluorescent symbols on them that only show under a black light. Through this, security officers can check for counterfeit banknotes. The same is true checking for fraudulent identification cards.
One of the innovations for night and all-weather flying used by the US, UK and Germany during 1939-1945 was the use of UV interior lighting to illuminate the instrument panel, giving a variable-intensity alternative to the radium-painted instrument faces and pointers, without visible illumination that would give away an aircraft's position. This went so far as to include the printing of charts that were marked in UV-fluorescent inks, and the provision of UV-visible pencils and slide rules such as the E6B. However, the common failure of the light's power inverter on take-offs in bombers, and the night-blindness and crashes caused when the blacklight filter fell off on trainer aircraft, led to the system being mostly abandoned.
Black light puppetry is also performed in a black light theater.
Fluorescent makeup used for artistic effect.
"Midnight bowling" utilizing blacklights and the fluorescence of pins to enhance ambience.
Scorpion under Ultraviolet light .
Fluorescent materials used for paintings and plastic art.
Ultraviolet radiation itself is invisible to the human eye, but illuminating certain materials with UV radiation prompts the visible effects of fluorescence and phosphorescence. Black-light testing is commonly used to authenticate antiques and banknotes. It is extensively used in non-destructive testing; fluorescing fluids are applied to metal
It is also used to illuminate pictures painted with fluorescent colors (preferably on black velvet to intensify the illusion of self-illumination). The fluorescence it prompts from certain textile fibers, especially those bearing optical brightener residue, is also used for its recreational effect (as seen for instance in the opening credits of the James Bond film A View to a Kill).
In forensic investigations, black lights are used to reveal the presence of trace evidence, such as blood, urine, semen, saliva, and other bodily fluids, by causing visible fluorescence in these substances. The use of this technique by exposé-styled television news magazines for reporting on the various unsanitary and mysterious stains found in hotel rooms has become such an oft-repeated stunt that it has been lampooned on comedy shows such as Family Guy, The Office (US) and The Upright Citizens Brigade.
In medicine, the Wood's lamp is used to check for the characteristic fluorescence of certain dermatophytic fungi such as Microsporan species which emits a yellow glow, or corynebacterium which have a red to orange color under the Wood's lamp. It is also used to detect the presence and extent of depigmenting disorders such as vitiligo. It can also be used to diagnose ringworm, fungal infections, corneal scratches, foreign bodies in the eye, blocked tear ducts, acne, erythrasma, tinea versicolor, microsporum canis, scabies, alopecia, porphyria, bacterial infections, and many other skin conditions[1][2].
In security, a pen with a fluorescent ink, generally a soft tip, is used to "invisibly" mark items. If the items are stolen then a black light can be used to search for the security markings. At some theme parks, a fluorescent mark is rubber stamped onto the wrist of a guest who needs to leave – for example for dinner – and intends to return later in the business day; in this way he or she would not need to pay for a second admission.
Black lights are also used to differentiate real banknotes with counterfeit banknotes as, in many countries, real banknotes have fluorescent symbols on them that only show under a black light. Through this, security officers can check for counterfeit banknotes. The same is true checking for fraudulent identification cards.
One of the innovations for night and all-weather flying used by the US, UK and Germany during 1939-1945 was the use of UV interior lighting to illuminate the instrument panel, giving a variable-intensity alternative to the radium-painted instrument faces and pointers, without visible illumination that would give away an aircraft's position. This went so far as to include the printing of charts that were marked in UV-fluorescent inks, and the provision of UV-visible pencils and slide rules such as the E6B. However, the common failure of the light's power inverter on take-offs in bombers, and the night-blindness and crashes caused when the blacklight filter fell off on trainer aircraft, led to the system being mostly abandoned.
Black light puppetry is also performed in a black light theater.
Fluorescent makeup used for artistic effect.
"Midnight bowling" utilizing blacklights and the fluorescence of pins to enhance ambience.
Scorpion under Ultraviolet light .
Fluorescent materials used for paintings and plastic art.
Ultraviolet radiation itself is invisible to the human eye, but illuminating certain materials with UV radiation prompts the visible effects of fluorescence and phosphorescence. Black-light testing is commonly used to authenticate antiques and banknotes. It is extensively used in non-destructive testing; fluorescing fluids are applied to metal
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