The sun emits electromagnetic radiation of different wavelengths. This is basically the energy given off by the sun UV Rays are anywhere from 10 nanometers to 400 nanometers. They are the cause of bad things, such as sunburn and skin cancer. They also cause a lot of good effects, like they help kill germs and bacteria. There are UV-A rays, which are longer wavelength and are helpful for the most part. There are also UV-B rays, which have a shorter wavelength, and cause sunburns and other harmful impacts. Luckily 95% of UV-B rays are absorbed by the ozone layer. There are also UV-C, which is the most harmful, but they never reach the surface. Meteorologists are able to calculate the UV value using a variety of tools. Using satellites, they
The light released by the sun consists of three frequency bands of radiation: infrared, visible and ultraviolet. Out of the three frequency bands, the ultraviolet light is damaging to most humans. Ultraviolet (UV) radiation divided into three categories: UVA, UVB, and UVC. UVA radiation passes through the skin without burning the surface layers. These rays can penetrate to a depth of 0.04 inches and causes damage to cell membranes and the immune system. UVA radiation has been linked to skin cancer, early aging and wrinkling of the skin. UVB radiation is responsible for the painful red burn people get after a long period of exposure to the sun. UVB rays also cause skin cancer and damage to the cornea and lens of the eye. The third category, UVC radiation, is generally absorbed by the Earth’s atmosphere and is not considered harmful.
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 ...
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...
The Effect of Wavelength on Photosynthesis Rate Aim: To be able to To investigate how different wavelengths (colors) of light affect the photosynthetic rate of the synthetic. I will use a pant that is a pond weed called elodea. I will measure the rate of photosynthesis by measuring the amount of o2 given off in bubbles per minute from the elodea. I will do this by placing the Elodea in a test tube with sodium hydrogen. carbonate then I will vary the light wavelength (color) using colored.
The sun’s rays contain two types of ultraviolet radiation that reach the skin, UVA and UVB.
0.20 and 0.29 UV-C are harmful to living things. These wavelengths have the ability to cause mutations to living cells, and even kill living cells. It also has the ability to damage your eyes.Most of the UV-C wavelengths are absorbs in the ozone. (But with our ever depleting ozone layer, what happens when the ozone layer is not there anymore?)
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
UV radiation causes significant damage to human skin, in the form of sunburns, aging, skin cancer, and nonmelanoma tumors. Human skin damage is primarily a result of tanning. The
The sun is crucial to the survival of human species. It produces energy for us to grow food, get warmth, light and photosynthesis. Although there are many beneficial factors about the sun, there are some harmful things that it can do to life on earth. One of the harmfull things that the sun produces is a sunburn. A sunburn is the skin's defense to exposure to ultraviolet light (UV light). Often after a sunburn a person will experience redness, blistering, swelling headaches and dehydration . UV light is “ part of the electromagnetic (light) spectrum that reaches the earth from the sun.” There are two rays of UV light that are the main causes of sunburns, both of which are too small for the human eye to see. The first UV light is ultraviolet A (UVA). UVA prematurely ages the skin, causes wrinkling and can travel through glass. UVA is able to travel through glass because of it’s long wavelength (although the wave length is still not long enough for the human eye to see). The second light, UVB has a smaller wavelength and causes the actual burning of the skin.
Most parents remembered hearing about the importance of protecting their children from the sun, yet children are still playing in the sun without sunscreen or protective clothing. Many people these days are not taking skin cancer seriously after knowing its significance. Skin cancer has been a growing problem in the United States and millions of people have suffered from it every year. The three most common skin cancers are Melanoma, Basal cell, and Squamous cell, which can cause bumps, sores, growths, etc. Skin cancer is a deadly disease with many causes, but the advantage is that it can be prevented.
To go to war is to engage in a fight with another Nation. Many view war as being an appropriate action that can only solve problems. Others believe that war is a violent action that leads to nothing but casualties. In the article, “Regarding the Torture of Others” Susan Sontag writes about the torture soldiers are inflicting on prisoners. Some torture was done so brutally that the some of the soldiers deem that acts as correct and in the process seem to try to dehumanize the victims. The bush administration considered torture as being mistreatment not evil. The Blog “Military Blog” by Zachary Scott-Singley deals with the day by day life and thoughts of a solider at war. Zachary Scott-Singley is a soldier struggling with the wrong of his actions. At one point, he believes that the killing of Iraqis is okay, but he then believes it is not. He was torn between he believes is right and not. The story “Half of a Yellow Sun” by Chimamanda Ngozi Adiche is a story about a young girl and her families struggles during the Nigerian civil war of the 1960’s. Her family has pride like much of the people of Biafra. That all changed when her younger brother Obi died, and the family realizes at that point the war was lost. While Sontag still maintained that war was not bad, she still believed that it was the torture of others that made war such a brutal action. On the other hand, Zachery from military blog was lost trying to find out if War was correct or not. The characters from “Half of a Yellow Sun” share a belief that war is necessary to defend their nations honor and pride but as the war progresses and it began to affect them they begin to see that the war was not as productive as they hoped it would be. Looking at pictures of war is like l...
Anyone can attest to the positive effects of sunlight, but it doesn’t just help the plants grow, it is necessary to us as human beings. Its effects go far beyond just brightening your mood or giving you a beautiful day at the beach. The amount of sun we are exposed to can have profound effects. Sunlight is necessary for good mental health. It keeps our hormones balanced, affects our daily motivation, and changes our perspectives on the different aspects of life all together. Furthermore, it has a dramatic effect on us physically by keeping our immune system at its best and giving our bodies essential vitamins that we could not live without. The main point is sunlight has a direct effect on a person’s mental wellbeing, physical health, and overall quality of life
We need the sun for everything; food, transportation, education, and just to live. The sun negatively affects us in our daily lives because our skin is sensitive to the sun. This means that we are prone to burn. A way to protect our skin is with sunscreen. The short-term effect of not wearing sunscreen when exposed to the sun is you can get a painful rash or peeling of skin can occur. Long-term effects of not protecting yourself from the sun can be that it changes your DNA or gives you skin cancer. It changes your DNA by radiation smashing into you skin. The reason why this is so dangerous is because the DNA will now instruct the skin to fix itself because of the radiation, but the instructions would have been changed. It can also speed up
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.
effect. A lot of the rays from the sun are absorbed by water vapor that is naturally in our