People all over the world are wondering what can help keep their eyes protected from the sun; do sunglasses really help? The answer is sometimes, because not all sunglasses have the same amount of protection. Sunglasses could be one of the most remarkable inventions, and they have become a very popular style in today’s world. They were first made to shade one’s eyes from the light so they were composed of just tinted glass. Technology has advanced, and scientists have found out that it wasn’t the light doing all the damage, but it was UV radiation.
Ultraviolet Radiation has always been a huge issue around the world. UV rays are the portion of the electromagnetic spectrum between x rays and visible light; these rays are invisible but cause a lot of damage to both the eyes and skin. The Sun is Earth’s main source of UV rays, but this radiation can also come from things such as tanning beds and black lights. There are three types of UV rays first is UVC, then UVB, and UVA. UVC radiation is almost harmless to humans “…because it is absorbed completely in the atmosphere”. If a human gets overexposed to UVC, things like snow blindness and severe sun burns can happen. These injuries usually last for a day or two causing quite a bit of pain. Next, UVB radiation, it is the most destructive of the three because it has the energy to harm cellular DNA, and is not fully absorbed by the Earth’s atmosphere. UVB causes sunburn and can lead to skin cancer. Lastly there is UVA radiation which is what gives you the tanning of the skin which could lead to sunburn if over exposed. UVA is most commonly used in black lights which are what is inside of tanning booths (Zeman). Anyone who spends a reasonable amount of time outdoors is at risk for eye prob...
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...sses look at the label and it will say how protective that pair is. A low example that is made for mainly fashion might say 70% UV radiation resistant. A pair that is very good quality will say 99-100% UV radiation resistance, this is going to be the best one to have, because after all they were made for protection not fashion. Also the color has no effect on the protection either so as you can see price and color don’t matter the only thing that does is the tag on the glasses that say the UV resistance percentage.
Works Cited
Tyson, Jeff. "How Sunglasses Work" How Stuff Works. 14 July 2000. Web. 14 December 2013.
“Ultraviolet rays,” World Book (2002), Vol. 20, pp. 17
“Ultraviolet radiation injury,” Encyclopedia Britannica (1981), Vol. 10, pp. 247
Zeman, Gary. "Ultraviolet Radiation." Health Physics Society. Health Physics Society, 27 Aug 2011. Web. 14 Dec 2013.
...ially during the hottest times of the day. Also, wearing protective sunscreen while outside is effective at reducing the impact of UV rays on skin.
Tanning can be harsh to your skin. The light coming from the sun contains different wavelengths of ultra violet (UV) waves. The two types of waves concerned about are UVA rays and UVB rays. UVA rays are long waves that cause more damage than a UVB ray. UVA rays penetrate deeper into your skin and cause tanning (“The Dangers of”). More and more exposure to UVA rays can cause permanent damage ...
Radiation Effects Research Foundation. (2007). How radiation affects cells. In Basics About Radiation. Retrieved from http://www.rerf.jp/radfx/basickno_e/radcell.htm
Tanning affects the human skin through ultraviolet radiation, part of the spectrum of light that omits from the sun to the surface of the earth. Ultraviolet A rays are the longer ultraviolet rays that are projected, and these rays penetrate deep into the layers of skin, causing a tanning effect (Harvard Women's Health Watch, 2). It does this by penetrating into the lower layers of skin, or the epidermis, and triggering cells known as melanocytes to make melanin, the brown pigment that causes tanning (Hyde, Patrice, MD, 1). They account for most of the ultraviolet components emitted by lamps in tanning beds, because they are associated with an almost immediate tanning effect (Brady, Mary S, 2). The shorter rays are ultraviolet B rays, and these rays only reach the outer superficial skin cell layer, also known as the epidermis (Harvard Women's Health Watch, 2). UVB rays, therefore, are the actual cause of sunbur...
Indoor tanning is a controversial topic and has even been the subject of lawmakers in many states for at least the past ten years. Tanning is a symbol of “health and wealth” for many living in the developed countries and yet it is associated with one of the most deadly cancers known to human beings because of the chemical reaction the Ultra Violet (UV) rays at the cellular level. The research is clear that the use of indoor tanning beds can be dangerous and yet, there are some benefits of using indoor tanning beds. Research has also shown that exposure to UV radiation contributes to the synthesis of Vitamin D in the body, it also can positively boost mood, can heal certain types of skin disorders and may also be helpful for those suffering from fibromyalgia. The indoor tanning industry should make known the risks of using a tanning bed known before selling their use to people. Before one makes a decision to use a tanning bed she should be well informed of the risks and benefits.
The PubMed Database was conducted for search the literature about the chosen health behavior. Key search terms were used: sun protective behavior, sun protective behavior AND project, sun protection* AND project, sun protective behavior AND questionnaire*, sun protection* AND trend* AND skin cancer. Limits including: publication date 10 years, free full text available, English. In addition, the age limitation is adults.
Scientists have performed many different tests and studies to learn more about high exposure to UV. Close observation of cells have shown that sunlight, natural or artificial, can cause mutations or DNA damage in cells. This can lead to further damage which will then be passed down through generations. Another study scientists perform is on animals. Scientist will expose your typical lab animals to UV rays, and this test typically results in skin cancer on the animal. These studies have been performed with UVA, UVB, and UVC, and they have all proven
"Trifocal Glasses Lenses,."Trifocal Lenses,. Eyeglass Lens Direct, 1 Jan. 2014. Web. 23 May 2014. .
amount of UV exposure absorbed by a person is a direct result of the intensity of the light absorbed, the length of time of the exposure, and whether or not the skin was protected by clothing or sunscreen. Skin damage can be prevented by limiting when and how long one is exposed to sunlight, and by wearing protective clothing and sunscreen. Avoid exposure to sunlight during mid-day hours, when it is most intense. Tight weave clothing, and hats, protect against the sun's rays. Tanning beds, while popular, are also ...
Arnette Men’s Round Sunglasses: Men who have a strong jawline and broad forehead need glasses with a round bottom like the Arnette Pleasantville sunglasses bring symmetry to a square face.
Pollution is a massive problem, due to burning excessive amounts of fossil fuels and produces global warming. The rising in temperature of earth has resulted huge melting of polar ice caps, flooding of low-lying areas, and also rise in sea levels. If these conditions conquer the surface of earth it will face radical changes. Hence, the ozone holes are also being created trough this process, that creates a harmful UV rays that enters the earth surface. Apparently it affect human life trough causing diseases like cancer. Melanin that present in the skin reacts trough these high wave radiations. Skin cancer is one of the major forms of disease that known to be caused due to these reactions of the pigment present in the skin and infra-red rays. Besides that, when burnt sulphur, dioxide gas will also be produced. This factor forms acid rain. Acid rain could leads to destructions of most of monuments that were made up of brickwork or marbles. Even a lot of crops are affected due to the acidification of loams.
Keevil, F, Stephen.. "Physics and Medicine 1: Physics and medicine: a historical perspective." Lancet 9825(2012):1517. eLibrary. Web. 15 Dec. 2013.
When the contact lens was invented, the world of vision correction was altered forever. No longer were those people lacking perfect 20/20 vision forced to look any different than everyone else. Both discrete and revolutionary, the contact lens provided a brand new, viable, alternate solution to an age-old problem. After centuries of engineering and discovery the contact lens has evolved greatly. Presently contact lenses are made hard or soft, for daily or continuous wear, gas permeable, and even providing ultraviolet protection. A properly fitted pair of today’s discrete, convenient, versatile, and inexpensive contact lenses provide the best form of vision correction available in today’s market.
The first known use of sunscreen was in Ancient Greece and Egypt. They need it there because of the hot climate. The first time it was commercially produced was in 1936. The founder of sunscreen is also the founder of L'Oreal, French chemist Eugène Schueller. Another chemist, H. A. Milton Blake, brought sunscreen to Australia around the same time. Ancient Greeks used olive oil and Ancient Egyptians used extracts of rice, jasmine, and lupin plants to create sunscreen. These techniques are still used. Today sunscreen contains a mixture of organic and inorganic ingredients. The inorganic materials are enhanced with UVB. It absorbs the organic chemicals, cinnamates, octyl, methoxycinnamate , oara-aminobenzoic acid, and benzophenes. These organic chemicals convert the sun’s energy into harmless heat. Sunscreen’s purpose is to protect your skin from the sun. It is used to reflect or scatter the bright light from the sun away from your delicate skin. People apply sunscreen when there skin is not used to the sun or when the sun is very strong. The factor of sunscreen will tell you how long you can stay in the sun. If you apply a sunscreen that is 30, this means that you can stay in the sun 30 times longer before you burn. Sunscreen acts as bullet proof vest against the sun.
Probably the most commonly used word by your dermatologist, your beautician, your pharmacist or just the girl next door, and for a good reason. The sun’s damaging UV rays can single-handedly destroy your skin over time and in some cases even cause irreparable damage. It will burn your skin, dry it out, destroy collagen fibers and predispose you to cancer. Whether it’s a scorching sun or not, whether you are outdoors or not, sunscreen is an everyday must-wear. You have a choice.