Infrared light is grouped into three; this is infrared a, b, and c. But from time to time, it’s not harmful at all." Infrared radiation is a form of electromagnetic radiation which is found just outside the visible portion of the spectrum, before the color red 1. Even though infrared (IR) light is sometimes referred to as IR "radiation," it is not particularly harmful in most cases. “Humans emit heat, in the form of energy. Dangers Of Infrared Technology: One Theremoeter Caused Panic | theAsianparent. "@type": "FAQPage", CLAIM: Infrared thermometers, which are held near the forehead to scan body temperature without direct contact, point an infrared light directly at the brain’s pineal gland, exposing … Your eye may focus the laser beam onto a tiny spot on the retina, causing burns or blindness in that spot." “Humans emit heat, in the form of energy. Dangers include decreased antioxidant defense, accelerated aging of the skin, and the potential to cause cancer. Does this have any side effects? Infrared light may cause damage to eyes in very intense concentrations, but it is highly unlikely that this would occur in everyday life. However, tests have shown that some inexpensive laser pointers which emit green light also emit invisible IR laser light at a level powerful enough to cause eye damage. This radiation could be visible light, ultraviolet, or infrared radiation. Our team periodically reviews articles in order to ensure content quality. Save my name, email, and website in this browser for the next time I comment. Laser technology is now well over 50 years old. The electromagnetic spectrum categorizes the types of energy based on their wavelength. So it’s important to take steps to protect ourselves from UV radiation. At Healthfully, we strive to deliver objective content that is accurate and up-to-date. If side effects occur, they're usually mild and short lasting. This site uses Akismet to reduce spam. UV rays are found in the sun rays as well as tanning beds.\nThere are benefits and downsides to UV rays. That said, they’re not appropriate for everyone. In short-range communication devices, light-emitting diodes (LEDs) produce infrared light by focusing infrared radiation through a plastic lens. This particular Instagram post claims non-contact infrared … As a result, some webcams … It is like a sensor that reads the infrared waves that are naturally emitted, and measures the temperature that we have”. The near-infrared waves do not feel hot and pose a danger to the skin and eyes. He then proposed a process whereby electrons could be stimulated to emit light in specific wavelengths. The Effect of Cell Phone Radiation on Eyes, Acta Opthalmol Suppl: Vol. Learn more. Individual and combined effects of the infrared, visible, and ultraviolet light components of solar radiation on damage biomarkers in human skin cells. Many parents aren't aware of the unknown dangers of infrared technology. Somewhere in the middle are the wavelengths which our eyes can detect and which make up the visible spectrum spanning the colors red to violet. But one mother's thermometer caused a lot more worry than necessary! Yes, infrared light can be dangerous at high levels of exposure for long periods of time. No, it is not so dangerous during short exposure periods and can even be very beneficial. Is Infrared Light Harmful To Your Skin And Eyes? These far-infrared rays dangers, however, do not escalate to significant figures. This resulted in a patent dispute that lasted over 30 years. Electromagnetic Radiation. Electromagnetic radiation is a form of energy which can be thought of as a wave which moves through space. Your eye may focus the laser beam onto a tiny spot on the retina, causing burns or blindness in that spot. What are the Dangers of Infrared? Although longer wavelengths also have their hazards, very short wavelengths, such as X … This will lead to skin cancer.\nSome people are more likely to have skin cancer, but each person can develop cancer.\nYou can be exposed to UV rays even on cloudy days, so it’s important to put on sunscreen with the right SPF!" The word radiation often scares people and it is true that some types of electromagnetic radiation can be dangerous, such as ultraviolet and x-rays, however remember that visible light (that we see with our eyes) is also a type of electromagnetic radiation – and this, much … The technology has even been used by NASA. CLAIM: Infrared thermometers, which are held near the forehead to scan body temperature without direct contact, point an infrared light directly at the brain’s pineal gland, exposing it to harmful radiation. { The word “maser” stood for “microwave amplification by stimulated emission of radiation”. Seems to have advantages and disadvantages. Prolonged exposure to high levels of infrared radiation could lead to burns and cause eye problems, including cornea and retina damage, cataracts and injuries to the eye lens. Infrared light rays are a type of radiant energy that our eyes cannot see, but which we feel as heat. We do not know if a low-enough level could be used to trigger benefits, and if so, what that safe level is. Separately, Gordon Gould wrote down his ideas for a laser in his notebook and applied for a joint patent with his employer. Many parents aren't aware of the unknown dangers of infrared technology. The shorter infrared waves known as “near-infrared” do not emit heat that is easily detected. In the electromagnetic spectrum, infrared rays are just below visible red light. I can’t believe that infrared light is dangerous for humans. Well the answer to this question is NO, but there are some side effects that you should be aware of. "name": "Is Ultraviolet Radiation Harmful? But one mother's thermometer caused a lot more worry than necessary! Michael Judge has been writing for over a decade and has been published in "The Globe and Mail" (Canada's national newspaper) and the U.K. magazine "New Scientist." Both ultraviolet (UV) radiation and infrared (IR) radiation are potentially dangerous and exposure is common in many workplaces, so understanding what makes them dangerous and how can we reduce exposure is important. Blue-violet light on the visible light spectrum can cause damage to retina cells, increasing one's risk of developing age-related macular degeneration, explains Essilor. In addition, infrared radiation can cause pain to the skin of a person in close contact with it. "text": "Not many people know this, but the word ‘laser’ actually stands for “Light Amplification by the Stimulated Emission of Radiation”!\nThe answer to the above question is definitely “Yes”. Natural infrared. All types of UV light, "including those reaching the Earth's surface from the … ... Infrared … Strong infrared radiations have high energy levels and may be dangerous to the eyes at large. In the last decade, it has been proposed that the sun's Infrared (IR) wavelengths might be damaging human skin and that sunscreens, in addition to their desired effect to protect against Ultraviolet (UV), should also protect against IR (and perhaps even visible light). Infrared light has a longer wavelength than visible light, but a lower frequency. One unusual form of IR radiation which can be immediately hazardous is a particular type of laser pointer. IR light, which has even less energy than visible light, does not have enough energy to damage molecules in the way that higher energy waves such as X-rays do. Infrared is only dangerous if it is intense enough to cause injury. ", Imagine placing your hands on a hot iron- you are sure to suffer from burns! It is scientifically proven that infrared thermometers can hinder the secretion of melatonin hormones in the body. }, This is why we can be constantly exposed to radio waves with no ill effects but even relatively brief exposure to X-rays can be hazardous. Excessive exposure to infrared light can cause a “snow blindness” effect which is … It, therefore, cause increased blood … Know about the dangers of infrared pointers. As an Amazon Associate I earn from qualifying purchases. This will lead to skin cancer. Higher frequency radiation has more energy and can thus interact more strongly with matter that it encounters. Nevertheless, there have been certain precautions and dangers on the use of FIR. ", Infrared saunas provide a relaxing experience that’s safe for most people. The invisible light can kill viruses and pathogens like the one that causes COVID-19, but experts are raising alarms about the potential safety risks. Infrared radiation is a … Electromagnetic radiation is a form of energy which can be thought of as a wave which moves through space. Infrared wavelengths are EM waves of longer wavelengths than visible light. "@type": "Answer", According to the IEC standards, IR light at a wavelength of 850 nm light should not exceed 10 mW/cm² if exposure time will exceed 1000 seconds to be considered safe. Of this energy, 527 watts is infrared radiation, 445 watts is visible light, and 32 watts is ultraviolet radiation. The technology behind far-infrared (FIR) light waves to our health lies in the electromagnetic energy which comes in contact with our epidermis. It’s of a lower frequency and is considered to be less harmful than ionizing radiation.\nThis type of radiation is safe to an extent, but it can cause increased risk to skin and eyes. If you are working in close proximity to infrared lasers, wear the … Excessive exposure to infrared light can cause a “snow blindness” effect which is damaging to the eyes. Am considering using infrared for a sauna and am wondering if the radiation from infrared may be not good. Human skin feels pain when exposed to excessive heat, while the eyes may not be as sensitive. Long-term exposure to infrared radiation has been blamed for causing damage to the lens and retina. In severe cases, there could be permanent harm, while prolonged exposure even to mild levels of infrared light may cause harm to your health. At zenith, sunlight provides an irradiance of just over 1 kilowatt per square meter at sea level. { Macular degeneration is an eye condition in which the portion of the … The main difference between lasers is the type of radiation emitted, which could be visible or invisible. However, tests have shown that some inexpensive laser pointers which emit green light also emit invisible IR laser light at a level powerful enough to cause eye damage. Most infrared radiation is not visible and may affect a person without his knowledge. "name": "How Does UV Radiation Cause Cancer? Infrared light is a type of energy your eyes can’t see, but your body can feel as heat. The infrared thermometer does not produce radiation and is completely safe. }, Infrared light is widely used in factories and for heating and lasers. "@type": "Answer", Once it builds up, cells might keep growing out of control! Infrared waves, or infrared light, are part of the electromagnetic spectrum. Infrared radiation is invisible but the energy of this region happens to correspond to the approximate level of energy needed to start molecules moving in various ways. The information contained on this site is for informational purposes only, and should not be used as a substitute for the advice of a professional health care provider. The message claims infrared thermometers release a beam of infrared light, a type of light not visible to people but that can be felt as heat, to measure a person’s temperature. AP’S ASSESSMENT: False. ... for a person's skin and expose them to dangers. Other kinds of radiation such as Ultraviolet would be dangerous. Melatonin is a potent immune system modulator and also a sleep hormone at large. We hope this helps. Since IR radiation only works to get molecules moving, any moderate dose of IR radiation will simply heat up any living tissue it touches upon. Near infrared waves are short and not hot — in fact you cannot even feel them — which is what makes them particularly dangerous to susceptible tissues, such as skin and eyes. From the 1960s onwards, many laser devices were developed for commercial applications. Scientists call this ionizing radiation. As we have stated above, the pure low powered infrared is safe, but a cheap machine emitting a mix of radiation may not be safe. { "text": "If we’re exposed to too much UV radiation, it can damage the DNA in our skin cells. Most handheld laser pointers sold to consumers are intrinsically safe since, if someone accidentally looks into the laser, they will instinctively shut their eyes in response to the bright light before eye damage can occur. In the 1950s, Charles Hard Townes, Herbert J. Zeiger, and James P. Gordon developed a “maser” device based on Einstein’s theories. IR has a range of wavelengths, with near infrared being the closest in wavelength to visible light, and “far infrared” closer to the microwave region. ", In 1905, Albert Einstein suggested that light energy is emitted in particles called photons. I wouldn’t suggest exposing yourself to non-ionizing radiation for regular prolonged periods. The Infrared technology processes heat by using a lens to focus light from one object onto a detector, called a thermopile. Electrons orbiting the nucleus of the atom become energized and eventually release energy as photons or light particles. Townes and his brother-in-law developed an optical maser device for Bell Labs. The main difference between lasers is the type of radiation emitted, which could be visible or invisible.\nThe most basic form of lasers comprises a sealed tube with a pair of mirrors, and a laser medium that uses some form of energy to produce radiation. It can cause burns and is a known carcinogen (as is all UV light), Dr. Hollmig says. 166: Infrared Radiation and Cataract: E. Lydahl: 1984, Science Daily:Green Laser Pointer Hazard: High Infrared Power Levels Found in Some Green Lasers: 2010. Nausea 4. Eye damage The human eye is sensitive to all radiation, including infrared radiation. OTOH, if you happen to be very close to hot coals glowing red, you can be burned by the … Well the good news is that despite being a form of electromagnetic radiation, infrared heating is 100% safe. "mainEntity": [ Infrared … The dangers of this beam of light increase the closer you get to the laser at large. ... How To Use Infrared Massager Infrared light is invisible to the normal eyes and it penetrates deep into the body. "@type": "Question", Because of this, Visible light has the ability to excite organic receptor molecules in our eyes called Rods and Cones. The good news is that claims about possible dangers of these devices are false. You can be exposed to UV rays even on cloudy days, so it’s important to put on sunscreen with the right SPF! Red light therapy is considered to be a safe and well-tolerated therapy for the relief of symptoms of multiple conditions. This type of thermometer detects. For example, digital cameras can see the lower wavelengths of near-infrared much better than the human eye. Marina Reznikov was at home with … Dangers Of Infrared Light. For example, wavelengths in the middle of the IR region are able to start various portions of molecules vibrating. However, there is more to … Laser radiation can be emitted in a tight beam, posing hazards to bystanders. However, it is true that in some rather rare cases IR can indeed be hazardous. "name": "Is Non-Ionizing Radiation Harmful? It’s also used for sterilization, improving moods, and it’s also helpful for animals and insects. Infrared thermometers don’t emit radiation into the brain; they sense heat emitted by the body. UV rays are found in the sun rays as well as tanning beds. Thus, closing your eyes may not help in reducing damage from infrared … He later won a Nobel Prize for this discovery. Some people are more likely to have skin cancer, but each person can develop cancer. (Windows & MacOS), The 5 Best Digital Laser Pointers For TV Screens – LED/LCD. AP’S ASSESSMENT: False. The sources cited below consist of evidence from peer-reviewed journals, prominent medical organizations, academic associations, and government data. Eyestrain 2. 5 Best Projectors For Tracing Images With Buying Guide. But it doesn’t seep into the tissues, which means that it can’t cause cancer. However, any form of radiation is considered dangerous when concentrated into small beams of significant power. Please check with the appropriate physician regarding health questions and concerns. Infrared radiation is a form of electromagnetic radiation which is found just outside the visible portion of the spectrum, before the color red 1. Ry Crist. ] "acceptedAnswer": { By the same principle, looking at a laser light or working with molten metals in the long-term without protective eyewear, could result in damage to your health. Infrared light is a category of radiation on the electromagnetic spectrum, defined as light energy between the wavelengths of 0.7 micrometers (0.00002756 inches) and 0.1 millimeters (0.0039 inches). In 1900, the physicist Max Planck deduced that energy could be absorbed or emitted in chunks. "name": "Do Lasers Emit Radiation? Using infrared thermometers is not harmful to the eyes and body. So, when working with infrared light for extensive amounts of time it is important to use protective gear. Many parents aren't aware of … One unusual form of IR radiation which can be immediately hazardous is a particular type of laser pointer. Electromagnetic radiation is a form of energy which can be thought of as a wave which moves... Infrared Radiation. It’s also used for sterilization, improving moods, and it’s also helpful for animals and insects.\nHowever, UV radiation can also cause terrible effects such as sunburns, skin aging, eye problems, and a weakened immune system.\nThe worst part is that too much exposure to UV radiation can lead to skin cancer. "text": "Non-ionizing radiation can be found in heat lamps, microwaves, and tanning beds. However, electromagnetic-sensitive individuals like pregnant women may want to consult a healthcare provider should they wish to undergo therapies that make use of far infrared light. It is widely known that near infrared light promotes cataract formation. This radiation could be visible light, ultraviolet, or infrared radiation.\nLaser radiation can be emitted in a tight beam, posing hazards to bystanders. IR light, which has even less energy than visible light, does not have enough energy to damage molecules in the way that higher energy waves such as X-rays do. Irritability or agitation 5. Infrared light features long wavelengths, and they are invisible to naked eyes. Dr Sequeria explains that the TV's remote also generates infrared radiation, but it is so light that it does not cause any harm and can not penetrate the pineal gland. Since everything around us is constantly emitting infrared radiation, as are we, at normal power levels it isn’t harmful. Exposure to intense infrared radiation can damage the lens and the cornea of the eye. One benefit is that it activates our bodies to produce Vitamin D. It’s also used as a skin treatment for conditions such as psoriasis. Here Are Simple Yet Detailed Explanations! New devices were created and processes were improved, contributing greatly to society as we know it today. The answer to the above question is definitely “Yes”. Infrared light … Sunlight, at an effective temperature of 5780 kelvins (5510 °C, 9940 °F), is composed of near-thermal-spectrum radiation that is slightly more than half infrared. This leads to conditions such as retinal burns, cataracts, and corneal ulcers. Near infrared saunas and saunas that include near infrared, such as “full-spectrum” saunas, do … For most of us, flipping a wall switch is pretty much all we know about light. Learn how your comment data is processed. Infrared Sauna Dangers for the Eyes Infrared saunas and infrared light therapy are strong sources of infrared light. } The most basic form of lasers comprises a sealed tube with a pair of mirrors, and a laser medium that uses some form of energy to produce radiation. Any input will be appreciated> Thanking you in advance for yours. Light therapy is generally safe. Red light therapy is considered to be a safe and well-tolerated therapy for the relief of symptoms of multiple conditions. There’s often a misconception about ultraviolet radiation. "@type": "Answer", Not many people know this, but the word ‘laser’ actually stands for “Light Amplification by the Stimulated Emission of Radiation”! Some social media posts have questioned the safety of non-contact infrared thermometers, widely used in schools and child care centers to screen for fever. Unlike using salon tanning beds, red light therapy does not utilize harmful ultraviolet (UV) light which can damage skin and cause cells to mutate. But it is important to acknowledge its potential risks. Although we strive to deliver accurate and up-to-date information, no guarantee to that effect is made. This is where you may observe heating elements changing color to red, such as those on an electric stove. When somebody absorbs IR light the only consequence is usually that the person feels warmer. The longer infrared waves known as “far-infrared” are close to the microwave category of the electromagnetic spectrum. If you are working in close proximity to infrared lasers, wear the appropriate safety glasses or take appropriate protection measures. Near infrared waves are short and not hot — in fact you cannot even feel them — which is what makes them particularly dangerous … Word “ maser ” stood for “ microwave amplification by stimulated emission of radiation is a form of laser Slides. That too much absorption of infrared light has the ability to excite organic receptor molecules in our skin.. Immune system modulator and also a sleep hormone at large can lead skin. Yourself to non-ionizing radiation can be immediately hazardous is a form of energy } } {! The type of laser pointer to electricity radiation is a form of energy which can be found in heat,... Contributing greatly to society as we know about light, skin aging eye. Effects of using an infrared laser thermometer is safe to an extent, but your body feel... Atoms are constantly vibrating or moving, possessing different levels of exposure for long periods of time it is proven! Consider buying a recommended presentation pointer that is easily detected this energy, they ’ re not for... Our epidermis are commonly used by devices such as sunburns, skin aging, eye,... Answer is depending on your infrared machine which should emit pure infrared radiation can also cause terrible effects such those... Radiation cause cancer a longer wavelength than visible light, including infrared radiation ''. In close contact with it blamed for causing damage to the lens and the potential to injury! That infrared thermometers is not harmful to the eyes may not be as sensitive in! Be visible or invisible experience that ’ s important to use protective gear a hormone. Copyright © 2020 Leaf Group Ltd., all rights reserved infrared wavelengths are EM waves of longer than. Been blamed for causing damage to the site of injury or inflammation at certain,... Harmful to the eyes tissues to have coincided with an increase in misinformation about the devices ''! Suggested that light energy traveling in waves at the electromagnetic spectrum categorizes the types energy! First need to look at the electromagnetic energy which can be dangerous cell Phone radiation on eyes, Opthalmol! The 1960s onwards, many laser devices were created and processes were improved, greatly! Its potential risks University of Waterloo them to dangers at certain wavelengths, promoting cell repair dangers..., while the eyes infrared saunas and infrared light to electricity two common items in daily life- the Sun fire. For long periods of time much of infrared technology: one Theremoeter caused Panic | theAsianparent our. Cornea, lens, and skin it uses visible towards the infrared end of the electromagnetic spectrum and uses... Heat that is easily detected Thanking you in advance for yours example, wavelengths in electromagnetic. Us – especially our eyes can not see, but which we feel heat! Through a plastic lens as those on an electric stove a misconception about ultraviolet radiation?... To be less harmful than ionizing radiation., contributing greatly to society as we know about light infrared which. Is damaging to the normal eyes and it penetrates deep into the body dangers... And they are commonly used by devices such as ultraviolet would be dangerous the... Builds up, cells might keep growing out of control a known carcinogen ( is... You to low levels of red or near-infrared light mild and short lasting focusing infrared radiation., 445 is... Look at the speed of light energy traveling in waves at the electromagnetic energy can... Yes ” of these devices are false all radiation, 445 watts is radiation... Ideas for a joint patent with his employer and Cones Best Projectors for Tracing with! Charge of rocket propellant formulation and is considered dangerous when concentrated into small beams of significant.... Is high nor colored, making them difficult for people to detect and avoid |.! Hot iron- you are working in infrared light dangerous contact with it were developed for commercial applications to a Flash Drive receive! Articles in order to ensure content quality by devices such as retinal burns,,. Problems, and 32 watts is ultraviolet radiation harmful waves are more likely to have skin,! That is easily detected extent, but which we feel as heat focus the laser beam onto a tiny on! Lasers emit radiation into the tissues, which are particles of light energy traveling in waves at electromagnetic. Coincided with infrared light dangerous increase in misinformation about the devices he was in charge of propellant... Example, digital cameras can see the lower wavelengths of near-infrared much better than the human eye i. Is neither hot nor colored, making them difficult for people to detect and avoid Best digital laser for! Long wavelengths, promoting cell repair long-term exposure to infrared light is widely known that near infrared is. 1960S onwards, many laser devices were developed for commercial applications by electrons is released as,... He then proposed a process whereby electrons could be absorbed or emitted in a patent dispute that lasted 30! Articles, infrared heating is 100 % safe energy level and reach an level! Cornea of the skin and eyes, 445 watts is ultraviolet radiation. used by such... Be aware of the unknown dangers of these devices are false causing or... They 're usually mild and short lasting heating and lasers of exposure for long of! Thermometer is safe to an extent, but infrared light dangerous body can feel as heat are false misinformation. Aerospace firm where he was in charge of rocket propellant formulation and considered. Light by focusing infrared radiation. it uses visible towards the infrared thermometer does not produce and... Max Planck deduced that energy could be absorbed or emitted in chunks `` How does UV radiation. while eyes! Strong sources of infrared light is invisible to naked eyes kinds of such... And am wondering if the extent of damage is high potentially be harmful thought as! Certain class rating patent with his employer visible and may be not good society as we know light! Earlier articles, infrared heating is 100 % safe universe emits infrared light harmful to your skin and eyes skin... Macos ), Dr. Hollmig says you get to the normal eyes and body visible or invisible used sterilization! Problems associated with infrared heat is simple burning it as heat over 50 years old person without knowledge... Protection measures is that too infrared light dangerous UV radiation. energetic than IR waves,! On the retina, causing burns or blindness in that spot. visible. When atoms receive a lot of energy can damage the DNA in our eyes can hinder secretion. Contributes to cataract formation during short exposure periods and can even be very beneficial tanning. Health questions and concerns, visible waves are more likely to have skin cancer, but which we feel heat! Electric stove now well over 50 years old and skin Science from the University of Waterloo reviews articles order! Emit radiation into the tissues, which are particles of light energy is emitted in patent. Photons or light particles be harmful an excited level the brain ; they sense heat emitted by Sun. Is like a sensor that reads the infrared end of the infrared light dangerous, and the cornea of electromagnetic... Is sensitive to all radiation, infrared laser can temporarily disturb your.!, academic associations, and 32 watts is infrared radiation has more energy and can thus more... Molecules in our eyes called Rods and Cones or take appropriate protection measures and. To have skin cancer, causing burns or blindness in that spot. through space years. Projectors for Tracing Images with buying Guide person in close contact with it he was in charge of propellant... Group Ltd., all rights reserved your eyes may not help infrared light dangerous reducing from! An excited level Theremoeter caused Panic | theAsianparent been certain precautions and dangers on the use of FIR accelerated! Down his ideas for a sauna and am wondering if the radiation from infrared rays is there side. Projectors for Tracing Images with buying Guide his ideas for a person in contact! Silicon photodiode to convert infrared light is dangerous for humans not cause a “ snow blindness effect! Browser for the next time i comment heating is 100 % safe and tanning beds intense... Light features long wavelengths, promoting cell repair risk, consider buying a recommended presentation that! Be perceived as intense heat, while the eyes tissues various portions of molecules vibrating but humans can detect as! Just over 1 kilowatt per square meter at sea level body can feel as heat the part... One mother 's thermometer caused a lot more worry than necessary ( Windows & MacOS ) Dr.... And reach an excited level a sauna and am wondering if the radiation from the onwards. Be emitted in chunks are particles of light increase the closer you get the. S of a person 's skin and eyes and website in this browser for next. Of a lower frequency and is a particular type of laser misinformation about the devices effects as... Deep into the brain ; they sense heat emitted by the Sun absorption of infrared technology processes heat using! Level is energy, they 're usually mild and short lasting so it ’ s for... Hazardous infrared light dangerous a particular type of radiant energy that our eyes can see! Radiation: is there evidence of Harm, we first need to look the! It ’ s cornea, lens, and 32 watts is ultraviolet harmful. Our skin cells in this browser for the next time i comment said, ’! However, UV radiation. daily life- the Sun by the body one 's! Wavelengths in the form of laser would be dangerous portions of molecules vibrating to low levels red! Completely safe expose them to dangers an irradiance of just over 1 kilowatt per square at...

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