Germicidal Light
UV Light – the Dangers and Benefits
When people think about UV light they usually imagine lying out on the beach, the sun shining high above, searing the sky and surf and slowly roasting them to a delectable lobster red. With the sun’s force tempered by the Winter, people tend to forget about the dangers of UV, think that the cloud cover or lowered temperatures mean that their skin is safe, that there’s no risk of burning or worse. This is wrong, and since each passing year brings about further erosion of the ozone layer’s protection, it is especially important to learn about the realities of UV light, and how we can best protect ourselves from its pervasive threat.
What is UV light? Simply put, it’s electromagnetic radiation with a wavelength that’s shorter than that of visible light, and longer than x-rays. Visible light, UV rays, x-rays-all of these are just names for different wavelengths of electromagnetic rays. It’s called ultra-violet because these frequencies are higher than the wavelengths that we humans identify as violet. There are five kinds of UV light, but the first two, Vacuum UV and Far UV are both completely absorbed by the atmosphere.
UVC is also rarely found on our planet due to its absorption by the atmosphere, but is sometimes used in germicidal lamps due to its ability to kill germs. UVC is absorbed by the outer, dead layers of our skin, and can cause corneal burns (commonly termed welders’ flash) and snow blindness, a severe sunburn of the face. Though extremely painful, UVC burns usually clear up in a couple of days.
UVB is the most dangers of the commonly encountered forms of UV. It has enough energy to wreak photochemical havoc on our cellular DNA, but not enough to be absorbed by the atmosphere like UVC. UVB is needed by our skin to generate Vitamin D, but too much exposure can cause sunburn, cataracts and can lead to skin cancer. People who work outside are at the most risk of these dangers, and cloud cover is not enough protection to block UVB.
UVA is the most commonly found form of UV, and is responsible for the tanning effect we see in our skin after time spent in sunlight, and can cause sunburn if exposure is excessive. The atmosphere does very little to block this kind of UV, and it’s needed to help generate Vitamin D. However, too much exposure can cause our skin to grow tough, hard, and wrinkled. It can also suppress the immune system and cause the creation of cataracts. Most tanning booths and phototherapy use this kind of UVA.
UV light has too much energy for us. While visible light does little to our skin, UV is to jazzed up. They create heat in the same way that rubbing your hands does-but instead of simply causing the molecules of our skin to vibrate they can actually knock electrons right out of the atoms, or cause molecules to split. This results in a change of the chemical structure of the molecule. This change is especially dangers to living organisms, as changing the composition of your DNA can lead to mutations, which can lead to cancer.
So be careful with exposure to the sun. Even during the winter it’s likely that you’re being exposed to UVA and UVB, and with skin cancer rates rocketing, it’s critical that we take care of ourselves by reducing time spent in the sun and being sure to protect our skin from UV when we’re out and about.
About the Author
If you’re interested in UV protection, take a look at a variety of UV sun blocks, hats, or
sun protective clothing
. Be sure that your sun block protects against both UVA and UVB, and that it remains effective for more than an hour or two, or invest in
sun protection clothing
.
Winner of germicidal light installation
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TWO 18W UV Sterilizer Light Bulb 2G11 Jebao Tetra Pond (Germicidal Ultraviolet) $24.78 |
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G30T8 SANKYO DENKI |30W T8| 36″ GERMICIDAL UV-C G13 MEDIUM Light Bulb $25.19 |
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2-pack, UV Germicidal Light Bulb Lamp/ S-UVPLS13W $26.30 |
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PL-L 55W/TUV 55 Watt 21″ UV |GPL-55| Germicidal Lamp – By LSE UV Lighting $25.00 |
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Healthy Climate UltraViolet Germicidal Light 120V 60 hz 1ph Output 38 $479.99 |
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(4pin T5 Base) UV Germicidal Light Bulb, 4 3/4″ Long $12.60 |
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13W UV Bulb Germicidal Aquarium Light Bulb 13 watt G23 base for Tetra, Jebo more $11.99 |
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9 Watt PL-S9-TUV Germicidal Light Bulb—FAST AND FREE SHIPPING— $9.99 |
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UltraMax UME1924T Germicidal UV Air Light FOR AC ! NEW! $99.99 |
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UV Ballast for germicidal uv-c uvc lamps bulbs lights Perkin Elmer G36T5 TUV $35.00 |
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BIO-FIGHTER 84-06175 GERMICIDAL ULTRAVIOLET LIGHT 165814 $310.00 |
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BIO-FIGHTER 84-06177 GERMICIDAL ULTRAVIOLET LIGHT 165815 $366.00 |
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UVC LIGHT GERMICIDAL REPLACMENT BULB FOR AIR PURIFIER $12.99 |
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G22T5 4P 22W 22 watt UV UVC Germicidal Light Bulb Lamp $38.46 |
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Silver Proven Advanced Germicidal UV Light Cellphone Sanitizer Sterilizer $13.82 |
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Pink Proven Advanced Germicidal UV Light Cellphone Sanitizer Sterilizer $13.82 |
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Blue Proven Advanced Germicidal UV Light Cellphone Sanitizer Sterilizer $13.82 |
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Ultraviolet light Germicidal Duct Mounting in HVAC $257.00 |
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Germicidal UV Light 24 volt for HVAC Duct systems BREATHE HEALTHIER IN MINUTES ! $95.00 |
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Gemaire germicidal UV light for heating and air units $165.00 |
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5W (5-watt) UV Sterilizer Light Bulb |G23 Base 2-Pin| |Germicidal Ultraviolet| $11.50 |
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5W (5-watt) UV Germicidal Light Bulb |G23 Base Bi-Pin| for Tetra Tetratec UV-5| $10.75 |
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Pocket Size SANITIZING WAND, KILLS 99% GERMS & BACTERIA, Germicidal UV-C Light $11.95 |
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CVS Sanitizing Wand Germicidal UV-C Light Technology NEW IN BOX! $5.00 |
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CVS Pocket Size Sanitizing Wand Germicidal UV-C Light Technology NEW IN BOX! $5.00 |
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UVC Germicidal 254nm Dual 150mm Lamp Light Bulb 12V DC Kit $25.49 |
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UVC 254nm Germicidal U-shape 55×8x55mm Dual Light Lamp Bulb 12VDC Kit $20.32 |
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UV 254nm Germicidal U-shape 75×8x75mm Dual Light Lamp Bulb 12VDC Kit $24.39 |
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Ultra Violet 4W G4T5 Germicidal UVC T5 Tube 30V Light Bulb + 1 free FS-5 Starter $4.99 |
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G10T5L/4P 16W-UV UV-C Germicidal Light Bulb – USA SHIP $21.00 |
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G4T5 F4T5/GL G4W 4W Germicidal Replacement Lamp, Light Bulb, Ultra Violet Power $5.00 |
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Philips 308643 – TUV15W G15T8 Germicidal Fluorescent Light Bulb $23.23 |
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5 PCS 9 Watts UV-C Light Bulbs Germicidal 254 nm G23 Base 9W Replacement Lamp $28.88 |
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UVC Ultraviolet Light In Duct Germicidal Air Purifier $275.50 |
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36W UV Replacement Bulb 2-G11 Base 4Pin 36 watt – Germicidal/Ultraviolet Light $19.50 |
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UV-C 254nm Germicidal 100mm by 12mm Light Lamp Bulb 12V DC Kit $18.99 |
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UV-C 254nm Germicidal L-shape 125mm by 27mm Light Lamp Bulb 12V DC Kit $18.99 |
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2pcs 9watt 9 w UV Germicidal Light Bulb Lamp $21.00 |
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UV Ultraviolet Light In Duct Germicidal Air Purifier $179.00 |
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1 PC 5W 5 Watts UV UVC G23 Base light Germicidal bulb for aquarium fish tank $6.99 |
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12 PCS! 5W 5 Watts UV UVC G23 Base light Germicidal bulb for aquarium fish tank $59.99 |
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Fluorescent UV Lamp GPH793 T5/4 Germicidal Fish Tank Reptile Cage Pet Grow Light $18.00 |
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AIR PURIFIER INDUCT 2000 AC UV Light TiO2 UVC LAMP GERMICIDAL WHOLESALE PRICE!!! $119.99 |
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OSRAM 7W 46V T12.5 G23 Clear CFL Germicidal Light Bulb $11.95 |
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OSRAM 36W 106V T4 2G11 CFL Germicidal Light Bulb $21.95 |
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OSRAM 5W 35V T12.5 G23 CFL Germicidal Light Bulb $11.95 |
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OSRAM 18W 58V T4 2G11 CFL Germicidal Light Bulb $15.95 |
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OSRAM 9W 60V T12.5 G23 CFL Germicidal Light Bulb $13.95 |
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(6) 18 Watt T-UV 2G11 Fluorescent Germicidal Light bulb $199.00 |
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G30-T5 39W T6 UV Germicidal Lamp Light Bulb 36″ TUV $49.00 |
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(6) G30-T5 39W T6 UV Germicidal Lamp Light Bulb 36″ TUV $265.00 |
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(6) G30T8 30W T8 UV Germicidal Lamp Light Bulb 36″ TUV $145.00 |
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G30T8 30W T8 UV Germicidal Lamp Light Bulb 36″ TUV $32.99 |
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G25T8 25W T8 UV Germicidal Lamp Light Bulb 18″ TUV $26.00 |
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G20T10 20W T10 UV Germicidal Lamp Light Bulb 24″ TUV $29.00 |
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G40T10 40W T10 UV Germicidal Lamp Light Bulb 48″ TUV $46.00 |
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G22T5L / 22W / UV UVC Germicidal Light Lamp 4-Pin $41.07 |
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G36T5L (39W) UV Germicidal Ultraviolet Light Bulb 4pin $32.42 |
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UV Germicidal Light Bulb (OmniZap Startronics) 25W 2Pin $14.04 |
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G20T5 / 20W UV UVC / Germicidal Light Bulb Bi-Pin 16″ $17.29 |
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25W UV Germicidal Light Bulb (Laguna Hagen PowerClear) $14.04 |
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G25T8 UV Germicidal Light Bulb (Replacement) 25W 2Pin $12.96 |
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G22T5L UV Germicidal Light Bulb (Replacement) 25W 4Pin $23.78 |
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G36T5L (41W) UV Germicidal Ultraviolet Light Bulb 4pin $32.42 |
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G22T5 / 22W UV UVC / Germicidal Light Bulb Lamp 1-Pin $21.61 |
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G10T5.5L 1P / 16W Germicidal Light Bulb UV UVC 16 watt $18.36 |
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G25T8 Germicidal UV Light Bulb (Aquanetics) 25W Bi-pin $14.04 |
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UV 11W Germicidal G11T5 4P Light Bulb Bi-Pin 11 watt $10.81 |
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(G14T5 4P) UV Germicidal Light Bulb 14W 14 watt 4pin $18.37 |
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G22T5 / 22W UV UVC / Germicidal Light Bulb Lamp 4-Pin $41.07 |
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G22T5L / 22W / UV UVC Germicidal Light Bulb 4-Pin $41.07 |
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10W Germicidal UV/UVC 10 watt G10T5L 4P Light Bulb Lamp $21.61 |
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CELLPHONE SANITIZER Violight UV Germicidal UV Light 99.9% Effective in 5 Minutes $49.95 |
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BOX OF 2 CNC MACHINE GERMICIDAL LAMP LIGHT UVG4T5 8103 MITSUBISHI DWC-90 EDM $79.19 |
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UV Germicidal Purification 75mm Light Lamp Bulb Kit $18.19 |
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GTL-2 Germicidal UVC Light Bulb (1 Bulb) 2 Watt $18.49 |
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GTL3 Germicidal UVC Light Bulb (1 Bulb) 3 Watt $17.39 |
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Air Purifier UV LIGHT ultraviolet AC hvac dual lamp duct germicidal kills mold $117.99 |
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2x Ecoquest Fresh Air Germicidal UV Light Bulbs – G4T5 $8.51 |
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AIR PURIFIER AC IN DUCT UV Light TiO2 UVC LAMP GERMICIDAL WHOLESALE PRICE!!! $119.99 |
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UV LIGHT sterilization air purifier for hvac ac dual lamp duct germicidal DEAL ! $117.99 |
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LightExports |13 Watt| 2-Pin Base Germicidal Twin Tube CFL Replacement UV Light $8.50 |
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UltaViolet (UV) Germicidal G6-T5 Bi-Pin Base |9″ Long| TUV Light Bulb by LSE $5.90 |
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Lennox UVC-24V Healthy Climate UVC Germicidal Light $174.99 |
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Lennox UVC-41W-S Healthy Climate UVC Germicidal Light $239.99 |
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Lennox UVC-41W-D Healthy Climate UVC Germicidal Light $349.99 |
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Healthy Climate UltraViolet Germicidal Light UV-1000 120V 60 hz 1ph $429.99 |
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Air Purifier UV LIGHT ultraviolet hvac ac dual lamp duct germicidal kills germs $117.99 |
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8-Watt UV Germicidal/Sterilization Light Bulb – 1pk $16.95 |
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6-Watt UV Germicidal/Sterilization Light Bulb – 1pk $16.95 |
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10-Watt UV Germicidal/Sterilization Light Bulb – 1pk $16.95 |
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Air Purifier UV Light Germicidal ultraviolet light -new $158.00 |
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650692 120V Model C4 9 GPM Viqua TrojanUVMax Ultraviolet Light Water Disinfection System $377.00 Owners of a TrojanUVMaxTM can drink with confidence knowing 99.99% of illness-causing microorganisms, including E. coli, Cryptosporidium and Giardia are destroyed, supplying safe water to every tap. UV water purification is a natural process that adds no chemicals and does not affect the taste or odor of water. Other methods, such as those that use chlorine, may create harmful chemicals that have … |
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UltraViolet Light Purification 12 GPM $1,049.00 This modular (12) gallon per minute Ultra-Violet disinfection system incorporates our signaling ballast. That is right if something is wrong you get a warning signal. Stainless steel reactor vessel, quartz sleeve, electronic ballast and UV lamp are all included you need nothing more.This (12) gallon per minute system can be used as pre or post filter stage in any water treatment application. It i… |
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Purely Products PUVH2309 9-Watt UV-C Germicidal Ultraviolet Replacement Bulb $8.03 Purely UV-C Replacement Bulbs G23 BasePurely UV-C Replacement bulbs offer a much higher concentration of ultraviolet light than even the sun, making them highly effective as a cleaning and purifying agent for pond and aquarium pumps and clarifiers.What is UV and How Does it Work?UV light is germicidal – i.e., it deactivates the DNA of bacteria, viruses and other pathogens and thus destroys their a… |
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Philips 308643 – TUV15W G15T8 Germicidal Fluorescent Light Bulb $5.49 15 watt 18″ T8 Medium Bi-Pin (G13) Base Hot Cathode Germicidal Sterilamp Fluorescent Philips Light Bulb… |
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Germ Guardian EV9LBL Replacement Uv-C Bulb for EV9102 $20.36 The germguardian UV-C Room Air Sanitizer uses a replaceable 9-watt UV-C bulb to eliminate over 99% of targeted airborne germs, and a filter to destroy odors and allergens like dust mites and mold spores. The 9-watt UV-C bulb and filter fits into all EV9102 models and should be replaced every 6-8 months depending on use.Both the UV-C bulb and filter are sold together as a single replacement pack. I… |
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Violight VIO200 Travel Toothbrush Sanitizer $29.95 Now Sanitize Your Toothbrush, on the Go Now brush your teeth with a toothbrush thatÆs scrupulously clean. VIOlight ctertop Personal/Travel Toothbrush Sanitizer makes your toothbrush 99.9% germ free. WhatÆs more, itÆs so handy that you can sanitize the toothbrush while on the go. Mobile sanitizer Eliminates up to 99.9% germs Deluxe metallic finish No more invitation to germs for inf… |
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Honeywell UC36W1006 – Replacement Bulb for 36W SnapLamp $51.29 The Honeywell UC36W1006 is a replacement bulb for 36W dual-lamp return air and coil irradiation models.Used With UC100A1013, UC100A1054, UC100E1014, UC100E1030, UV100A1018, UV100A1059, UV100A2008, UV100E2009, UV100E3007…. |
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CellBlaster Universal UV Sanitizer $59.95 The CellBlasterTM is the world’s first universal UV cell phone sanitizer! It features an extra-long, ultra-powerful germicidal UV tube and a super-reflective scanning bed that quickly and effectively eliminate 99.9% of disease-causing germs, bacteria and viruses. Its compact, universal design works with virtually any type of cell phone or other hand-held personal device! “Blast Away” Germs” |
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TsirTech Cellphone Sanitizer Makes Your Cell Screen Look New for iphone 4g,Nokia N8,HTC,Blackberry, Palm, Motorola No fuss, no mess. $30.99 Your cellphone is used all day every day, keeping all the germs from you breathing and touching it. If you can cover your mouth to curb the spread of germs, why not sanitize your precious mobile device to prevent a reoccurring cold? Simply place your phone all the way down in the chamber and once the light turns on, the sterilizer begins its mission of disinfecting. Leave your device in for a min… |
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Pocket Purifier, Handheld UV Ultraviolet Germ-Eliminating Light, Black $19.95 Kill Germs in Just 15 Seconds — Protect yourself this flu and cold season with a powerful tool that gives new meaning to the term pocket protector. The Pocket Purifier is a compact UV light germ killing machine. In just 10-15 seconds, its UV light eliminates 99.99% of E-coli, staphylococcus, salmonella, and germs that cause the flu and the common cold. — Suitable for purifying masks, kitchen ut… |