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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UVB, 290nm-320nm, is harmful in prolonged doses. This is the spectrum that causes sunburns and even skin cancer.

Ultraviolet (UV) light has a wavelength between 10 nm and 400 nm, placing it outside of the visible range of electromagnetic energy. Light from UV sources, such as the UV torches listed above, is invisible to the human eye. On the contrary, it emits photons that combine with phosphorus to create a visible substance. Phosphorus reacts with UV radiation to produce the visible light you see. Dash, Madhab Chandra; Dash, Satya Prakash (2009). Fundamentals of Ecology 3E. Tata McGraw-Hill Education. p.213. ISBN 978-1-259-08109-5. Archived from the original on 31 December 2013 . Retrieved 18 October 2013. Normally the human eye responds to light rays from 390 to 760 nm. This can be extended to a range of 310 to 1,050 nm under artificial conditions. 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. Selected Float Glass Transmission Curve". Präzisions Glas & Optik. Archived from the original on 19 October 2015 . Retrieved 13 January 2017.Sunscreen. Select a broad-spectrum sunscreen that protects against both UVA and UVB radiation. Be sure and follow the manufacturer’s instructions for proper application and protection. Ultraviolet helps detect organic material deposits that remain on surfaces where periodic cleaning and sanitizing may have failed. It is used in the hotel industry, manufacturing, and other industries where levels of cleanliness or contamination are inspected. [90] [91] [92] [93] Non-destructive inspection: Seeing through the B‑52". afgsc.af.mil. U.S. Air Force. Archived from the original on 16 November 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.

Burnett, M. E.; Wang, S. Q. (2011). "Current sunscreen controversies: a critical review". Photodermatology, Photoimmunology & Photomedicine. 27 (2): 58–67. doi: 10.1111/j.1600-0781.2011.00557.x. PMID 21392107. S2CID 29173997. Reference Solar Spectral Irradiance: Air Mass 1.5". Archived from the original on 28 September 2013 . Retrieved 12 November 2009. Main article: Sunscreen Demonstration of the effect of sunscreen. The man's face has sunscreen on his right side only. The left image is a regular photograph of his face; the right image is of reflected UV light. The side of the face with sunscreen is darker because the sunscreen absorbs the UV light.Bodily Fluids. Many bodily fluids such as urine, saliva, or semen glow under UV light. Although blood is commonly shown as being fluorescent in crime dramas, it generally doesn’t glow very well under UV light . It takes another agent such as Luminol to cause it to really pop.