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The science that is responsible for protecting people and the entire environment from the effects of radiation is referred to as radiation protection. Generally David Njoku Limited Jersey , the radiation that is considered dangerous to humans is referred to as ionising radiation. It is the most dangerous known form of radiation because it is able to cause collateral damage to the tissues of the body. Despite its wide use in medical manufacturing, ionising radiation has the potential to cause extensive damage to the living tissues if it is used in excessive doses. Ionising energy possesses enough energy to liberate electrons from the molecules of living tissues. This is what makes it very dangerous to the health of any living organism. The ionising energy is dangerous because it moves at relativistic speeds. This category also involves electromagnetic waves or any group of atoms that are moving at the speed of light.

As far as radiation protection is concerned, doses of radiation absorbed are often controlled to avoid the side effects of ionising radiation. This is one of the major principles of radiation protection materials that are designed for humans. It is important to ensure that the doses absorbed by human tissue are not elevated enough to cause collateral damage to the cells. This is the most fundamental principle in radiation shielding. Studies have been carried out to determine the amount of radiation that is safe enough for humans to absorb. These safe doses of radiation are used to treat cancer patients by killing the cancerous cells. A few major examples of ionising radiation that are used to kill cancerous cells are X-rays and gamma rays.

There are many factors that affect the choice of radiation shielding materials for each possible application. Mainly, the choice of material depends on the amount of radiation a human being or living organism will be exposed to. If the amount of ionising radiation that a particular human being will be exposed to happens to be excessive, the nature of the shielding material also has to be good enough to prevent the excessive absorption of ionisation radiation.

Time is an important factor that has to be considered at all costs. The time frame of exposure determines the dosage of radiation energy that will be absorbed by tissues of any human being. If the time frame of exposure is short, the amount of radiation absorbed will be low. The converse is also true, when the time frame of exposure is long, the radiation absorbed is greater. In the former case, the radiation shielding materials required are not going to be as passive to radiation as they would be required to be in the latter case.
Is the human eye flawed? No, of course not, but like any biological system it could use a little bit of enhancement and protection from time to time. That’s where sunglasses come into the mix. Sunglasses were first used in 12th Century China but did not gain real popularity until the early 1900’s . Movie stars would wear sunglasses, not as a disguise or because they thought they were fashionable but to protect their eyes from the harsh lights used in film production. In 1929 a progressive entrepreneur saw the mass market appeal of sunglasses and started selling them on the beach in New Jersey.








Sunglasses are good for any outdoor activity but extra protection is needed during sports, especially extreme sports. According to Wikipedia: “In outdoor activities like riding, skiing and flying, the eye can receive more light than usual. It has been recommended to wear these kind of glasses whenever outside to protect the eyes from ultraviolet radiation, which can lead to the development of a cataract.”








Everyone agrees that some degree of protection from UV rays is important and it would be hard to find someone who did not believe that sunglasses are great asset but what about polarized lenses. Polarized lenses have been around for decades but first found an audience with boaters and others who spent time on the water. They reduce glare by limiting the wavelengths of light which are allowed to pass through the lens. Polarization essentially uses tiny tubes that only allow the narrowest bands of light to pass.








According to All About Vision: “Besides boaters, outdoor enthusiasts who benefit the most from polarized sunglasses include skiers, golfers, bikers, and joggers, who enjoy a clearer view along with elimination of glare. These sunglasses can be used for driving and, in fact, can reduce glare from a long, flat surface such as the hood of the car or the road's surface.”




Whether you go with polarized or standard UV lenses, durability is crucial for outdoor sports. You need a pair of sunglasses that can take a beating and continue to function. Bikers and climbers frequently take on injury spills and expect their gear, including glasses to survive as well. Leave it to the Europeans to meet the challenge. In 2002, a Swiss athlete who had broken one too many pairs of sunglasses began his search for a super-lightweight, flexible-yet-sturdy fiber which could be used to make a sunglass frame that could withstand use and abuse by a sporting, rugged individual. He found what he was looking for in a laboratory in his native Switzerland, gathered a team of top optical engineers and manufacturers and created a new line of super-tough, high-quality sunglasses.