Facts about UV Radiation

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Facts about UV Radiation

Facts about UV Radiation

Facts about UV Radiation
Facts about UV Radiation
Facts about UV RadiationFacts about UV Radiation

Facts about UV Radiation

Facts about UV Radiation

Facts about UV Radiation

Facts about UV Radiation

Ultraviolet radiation (UV) is an electromagnetic radiation that travels in waves and is measured by the length of the waves. UV light originates from the sun and travels to earth just like visible light does. All light is measured by wavelengths including what is called visible light. Visible light is what gives objects the colors people are able to see. An object may absorb a variety of colors but reflect one or more colors. The reflected color is what people perceive as color such as red, blue or yellow.

What is UV Radiation?

UV light is not visible to the human eye. The wavelength of UV light is shorter than what the human eye can detect. Interestingly there are a number of animals that can see UV light. Most insects, diurnal birds, and even some mammals can see UV light. The ability to see UV lights by animals has proven to be beneficial to their survival. Reindeer are able to see UV light and can more easily find food and avoid predators in an otherwise snow-filled environment.

The Harmful Effects of UV Radiation

There are three categories of UV radiation known as UVA, UVB, and UVC. The various levels of UV radiation correspond to a specific wavelength range. Each level of UV radiation that extends further from the visible light spectrum is increasingly hazardous to life.

UVA radiation is always around us and is the least harmful UV light. Prolonged overexposure to UVA does have some harmful effects. Overexposure to UVA can cause premature skin aging, damage to the eyes and even skin cancer through DNA damage.

UVB radiation is partially filtered by the earth’s ozone layer in the stratosphere. UVB exposure causes sunburn’s, premature aging of the skin, and skin cancer. It can also have a profound impact on the earth’s ecosystems by destroying plants and animals at the bottom of the food chain. This is one of the reasons many environmentalists are concerned about the depletion of the ozone layer.

UVC is effectively filtered by the ozone layer. If it were not filtered it would be completely lethal to living organisms.

There are many ways people have learned to avoid the harmful effects of UV radiation. The use sun blocks when planning to spend a day outside provides some protection from exposure to UV radiation. Some people simply avoid the sun during its peak hours of 11 am to 3 pm. Protective clothing, sunglasses, and hats are also frequently used to avoid absorbing too much UV radiation.

The Benefits and Uses of UV Radiation

The good news is that some UV radiation is actually beneficial and even therapeutic.

UV light aids in the production of vitamin D. Vitamin D is a critical nutrient needed by the body for healthy bones, immune functions and even the formation of blood cells. It only requires about 5 to 10 minutes two or three times a week to reap the benefits of vitamin D production.

Technological advances using UV lamps have provided ways to sterilize a numerous products including water and processed food. UV radiation destroys many viruses, bacteria, and mold by attacking molecules in their DNA.

Fluorescent lights are used as a treatment for jaundice and psoriasis. Physicians use phototherapy through UV radiation to help with various diseases such as rickets and lupus. However, physicians use UV radiation as a treatment when they are sure the benefits outweigh any negative side effect.

Dame is online enthusiast and part time blogger. Currently, he works on project for mens rash shirts , the original sun protection clothing company in Australia.

Thanks for reading Facts about UV Radiation

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