What is radiofrequency energy, how can it affect the body, and how is it measured in epidemiologic studies? Radiofrequency energy is a form of electromagnetic radiation. Electromagnetic radiation can be divided into two types: ionizing (x-rays, radon, cosmic rays) and non-ionizing (radiofrequency, extremely low-frequency or power frequency). Ionizing radiation, such as that produced by x-ray machines, can pose a cancer risk. There is currently no consistent evidence that non-ionizing
Running head: WHICH TECHNOLOGICAL CHANGE HAS HAD THE LARGEST Which technological change has had the largest effect on life in this country? Why? Terry University of Phoenix I perceive that the largest change has come from cell phones. There was a time when cell phones first broke into the market in 1982 that people never believed they would be where society is today. According to cells online.com (n.d.), “Consumer demand quickly outstripped the cellular phone system's 1982 standards, by 1987, cellular phone subscribers exceeded one million, and the airways were crowded.” In 1982 cell phones were mostly owned by wealthy individuals or upper echelon business owners.
The full name of EMF is Electromagnetic fields. It’s a kind of area that we may be involved into every time we watching TV, using cell phone, turning on a light switch or using an electric appliance. EMF is a generic term of force generated by magnetic fields or electrical charges. Sometimes, EMF can be considered as a kind of radiation when release energy. When we use some electric appliances, the electromagnetic waves of these appliances will change periodically and produce enough energy to cause ionization.
Magnetic Resonance Imaging (MRI) is the process of using a magnetic field and radiofrequencies to create sectional images of the body. The nucleus is spinning, which creates a nuclear magnetic moment. This rotating charge acts as a current loop and in turn produces a magnetic field. When a rotating nucleus is subjected to a magnetic field, it will begin to process. Magnetic Resonance imaging is accomplished through various measurements of this movement of the nuclear magnetic field.
Radio waves are a type of electromagnetic wave. What are electromagnetic waves? Electricity can be static, like what holds a balloon to the wall or makes your hair stand on end. Magnetism can also be static like a refrigerator magnet. But when they change or move together, they make waves - electromagnetic waves.
Cell Phones – Helpful or Deadly? Fifteen years ago cell phones were first emerging on a global market. Since that time cell phone usage has exploded to over a billion users. While there are many great advantages to cell phone technology, no one could have predicted that there could also be several major disadvantages. Although cell phones connect people and can help in times of emergencies, they also have huge disadvantages.
As a result of that there are a lot of accidents during the last years occurred because of the road use of cellular phones while driving. To my mind, if people cannot focus on the road while talking on a cell phone at the same time, they shouldn’t talk at all while on the road. As our society is becoming increasingly prevalent in all aspects of today's society, they are becoming a distraction, especially among people who are driving. Using cellphones while driving creates a less ability to concentrate on the road and the danger surrounding the vehicle. I believe that banning the use of cellphones while driving would decrease collisions.
However, they do not have any laws against talking on a hands free device. According to the University of Utah, talking on a cell phone while driving is as dangerous as driving drunk, even if the phone is a hands free model. In addition, the university found that motorists who talked on hands free cell phones were eighteen percent slower in braking and took seventeen percent longer to
With the growing popularity of cell phones the vast improvements that happen daily gets less involved in face to face or even voice to voice interactions because of texting, social media, etc. Social networking has opened so many new ways for us to connect and being able to access applications from cells makes it easy to keep in touch with loved ones. Introduction of the cell phone The idea of the cell phone was first introduced in the 1800s. In 1843 a man by the name of Michael Faraday studied to see if space could conduct electricity. This man led to the cell phone development.
The question has been asked, “Is it ethical for cell phone companies to sell cell phones without a written health warning to the user?” Has daily exposure to electromagnetic fields, including extremely low frequency magnetic fields and radiofrequency, in the environment caused the public any health problems? Questions are asked daily on the health risks involved in using wireless communication technology and most of the time you will receive the same answer, ‘There is no real evidence’. Several studies suggest that exposure to electromagnetic fields might associate with an elevated risk of cancer and other diseases in humans. Many laboratory studies have thus been conducted, but the results were controversial and no clear conclusion could be drawn. Why would cell phone companies need to supply a written health warning and make the users nervous when there is actually no evidence to support the health theories?