Eletorot UV Torch LED Black Light Flashlight Ultraviolet Torch 395nm Lights, 3-Modes Light, Find Pet Urine Stains on Clothes Floor Carpet Rugs and Authenticate Currency

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B270-Superwite Glass Transmission Curve". Präzisions Glas & Optik. Archived from the original on 9 July 2017 . Retrieved 13 January 2017. Skin Cancer. The most common types of skin cancer are found in parts of the body that see the most sun. UV rays from the sun as well as man-made devices such as Tanning Beds and UV lights can increase the risk of skin cancer. UVB phototherapy does not require additional medications or topical preparations for the therapeutic benefit; only the exposure is needed. However, phototherapy can be effective when used in conjunction with certain topical treatments such as anthralin, coal tar, and vitamin A and D derivatives, or systemic treatments such as methotrexate and Soriatane. [115] Herpetology [ edit ]

UV rays also treat certain skin conditions. Modern phototherapy has been used to successfully treat psoriasis, eczema, jaundice, vitiligo, atopic dermatitis, and localized scleroderma. [51] [52] In addition, UV light, in particular UV‑B radiation, has been shown to induce cell cycle arrest in keratinocytes, the most common type of skin cell. [53] As such, sunlight therapy can be a candidate for treatment of conditions such as psoriasis and exfoliative cheilitis, conditions in which skin cells divide more rapidly than usual or necessary. [54] Harmful effects [ edit ] Sunburn effect (as measured by the UV index) is the product of the sunlight spectrum (radiation intensity) and the erythemal action spectrum (skin sensitivity) across the range of UV wavelengths. Sunburn production per milliwatt of radiation intensity is increased by nearly a factor of 100 between the near UV‑B wavelengths of 315–295nm. UV radiation is useful in preparing low-surface-energy polymers for adhesives. Polymers exposed to UV will oxidize, thus raising the surface energy of the polymer. Once the surface energy of the polymer has been raised, the bond between the adhesive and the polymer is stronger. Allen, Jeannie (6 September 2001). Ultraviolet Radiation: How it Affects Life on Earth. Earth Observatory. NASA, USA. Ultraviolet Light, UV Rays, What is Ultraviolet, UV Light Bulbs, Fly Trap". Pestproducts.com. Archived from the original on 8 October 2011 . Retrieved 8 November 2011. Reference Solar Spectral Irradiance: Air Mass 1.5". Archived from the original on 27 January 2011 . Retrieved 12 November 2009.Defining "What is clean?" ". Integrated cleaning and measurement. Healthy Facilities Institute. Archived from the original on 21 September 2017 . Retrieved 24 June 2017. a b Moehrle, Matthias; Soballa, Martin; Korn, Manfred (2003). "UV exposure in cars". Photodermatology, Photoimmunology & Photomedicine. 19 (4): 175–181. doi: 10.1034/j.1600-0781.2003.00031.x. ISSN 1600-0781. PMID 12925188. S2CID 37208948. Event Admission (Hand Stamps). Attendees will appreciate having a hand stamp to allow admission into an event that is only visible under UV light . Being otherwise invisible, the stamp doesn’t have to be scrubbed off the next day. They are also much more difficult to forge or transfer to another person.

R. V. Lapshin; A. P. Alekhin; A. G. Kirilenko; S. L. Odintsov; V. A. Krotkov (2010). "Vacuum ultraviolet smoothing of nanometer-scale asperities of poly(methyl methacrylate) surface". Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques. 4 (1): 1–11. doi: 10.1134/S1027451010010015. ISSN 1027-4510. S2CID 97385151. Archived from the original on 9 September 2013. Bhatia, Bhavnit K.; Bahr, Brooks A.; Murase, Jenny E. (2015). "Excimer laser therapy and narrowband ultravioletB therapy for exfoliative cheilitis". International Journal of Women's Dermatology. 1 (2): 95–98. doi: 10.1016/j.ijwd.2015.01.006. PMC 5418752. PMID 28491966.Main article: Ultraviolet photography A portrait taken using only UV light between the wavelengths of 335 and 365 nanometers

a b c Lee, Brandon Chuan Yee; Lim, Fang Yee; Loh, Wei Hao; Ong, Say Leong; Hu, Jiangyong (January 2021). "Emerging Contaminants: An Overview of Recent Trends for Their Treatment and Management Using Light-Driven Processes". Water. 13 (17): 2340. doi: 10.3390/w13172340. ISSN 2073-4441. Using multi-spectral imaging it is possible to read illegible papyrus, such as the burned papyri of the Villa of the Papyri or of Oxyrhynchus, or the Archimedes palimpsest. The technique involves taking pictures of the illegible document using different filters in the infrared or ultraviolet range, finely tuned to capture certain wavelengths of light. Thus, the optimum spectral portion can be found for distinguishing ink from paper on the papyrus surface. Description of the Tithonometer", J.W. Draper, The Practical Mechanic and Engineer's Magazine, January 1844, pp.122–127 Raj, Baldev; Jayakumar, T.; Thavasimuthu, M. (2002). Practical Non-destructive Testing. Woodhead Publishing. p.10. ISBN 9781855736009.The differential effects of various wavelengths of light on the human cornea and skin are sometimes called the "erythemal action spectrum". [57] The action spectrum shows that UVA does not cause immediate reaction, but rather UV begins to cause photokeratitis and skin redness (with lighter skinned individuals being more sensitive) at wavelengths starting near the beginning of the UVB band at 315nm, and rapidly increasing to 300nm. The skin and eyes are most sensitive to damage by UV at 265–275nm, which is in the lower UV‑C band. At still shorter wavelengths of UV, damage continues to happen, but the overt effects are not as great with so little penetrating the atmosphere. The WHO-standard ultraviolet index is a widely publicized measurement of total strength of UV wavelengths that cause sunburn on human skin, by weighting UV exposure for action spectrum effects at a given time and location. This standard shows that most sunburn happens due to UV at wavelengths near the boundary of the UV‑A and UV‑B bands. UV-C LEDs are relatively new to the commercial market and are gaining in popularity. [ failed verification] [109] Due to their monochromatic nature (±5nm) [ failed verification] these LEDs can target a specific wavelength needed for disinfection. This is especially important knowing that pathogens vary in their sensitivity to specific UV wavelengths. LEDs are mercury free, instant on/off, and have unlimited cycling throughout the day. [110] Fingas, Mervin, ed. (2011). Oil Spill Science and Technology. Elsevier. pp.123–124. ISBN 978-1-85617-943-0. Klose, Jules Z.; Bridges, J. Mervin; Ott, William R. (June 1987). Radiometric standards in the V‑UV (PDF). NBS Measurement Services (Report). NBS Special Publication. U.S. National Institute of Standards and Technology. 250–3. Archived (PDF) from the original on 11 June 2016. EPROMs (Erasable Programmable Read-Only Memory) are erased by exposure to UV radiation. These modules have a transparent ( quartz) window on the top of the chip that allows the UV radiation in.

Hunt, D. M.; Carvalho, L. S.; Cowing, J. A.; Davies, W. L. (2009). "Evolution and spectral tuning of visual pigments in birds and mammals". Philosophical Transactions of the Royal Society B: Biological Sciences. 364 (1531): 2941–2955. doi: 10.1098/rstb.2009.0044. ISSN 0962-8436. PMC 2781856. PMID 19720655. What is UV radiation and how much does it increase with altitude? (Report). U.S. National Oceanographic and Atmospheric Administration. Archived from the original on 3 January 2017. Works from a wavelength of 315 to 400 nm. This type of ultraviolet radiation is called long-wave UV and is not absorbed by the earth’s protective ozone layer.

UV-A LED Lights

Bark, Yu B.; Barkhudarov, E.M.; Kozlov, Yu N.; Kossyi, I.A.; Silakov, V.P.; Taktakishvili, M.I.; Temchin, S.M. (2000). "Slipping surface discharge as a source of hard UV radiation". Journal of Physics D: Applied Physics. 33 (7): 859. Bibcode: 2000JPhD...33..859B. doi: 10.1088/0022-3727/33/7/317. S2CID 250819933. A UV flashlight’s function, in contrast to a standard flashlight, is to show what the human eye misses rather than to supply you with light in the dark. It’s simple to forget that what we observe in daily life isn’t precisely the objective reality we like to believe it to be, with colors, for instance, having some degree of subjective interpretation. New investigation finds some hotels don't wash sheets between guests". House Beautiful. 15 September 2016. Archived from the original on 3 July 2017. Main articles: Ultraviolet germicidal irradiation and Germicidal lamp A low-pressure mercury vapor discharge tube floods the inside of a hood with shortwave UV light when not in use, sterilizing microbiological contaminants from irradiated surfaces. Really want to find Yooperlites? Our flashlights have been hand-tested and approved by Erik Rintamaki.