Essay on Magnetic Field And People 's Health

1077 Words Dec 2nd, 2015 5 Pages
Magnetic Field and People
Over the last decade years, since electronic products became essential stuff in our life, the debates whether electronics products is bad for people’s health was always a controversial topic in our life. When I was 12 years, my presents bought me my first mobile phone in my life. What my mom told me most is “switch off your mobile phone when you sleep, electromagnetic radiation would harm for your health.” Do electromagnetic radiation and magnetic field harm for people’s health? First, we have to know that what magnetic field is.
A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field is specifically composed by two elements, direction and magnitude at any given point. So, the magnetic field is always a vector. Exposure to electromagnetic fields is not something new anymore. We exposure in magnetic field anywhere and anytime, no matter you are at home or at work, from the generation and transmission of electricity, domestic appliances and industrial equipment, to telecommunications and broadcasting, because we live on the earth and the earth has its magnetic field. Magnetic field that extends from the earth 's interior to where it meets the solar wind, a stream of charged particles emanating from the Sun.
Tiny electrical currents exist in the human body due to the chemical reactions that occur as part of the normal bodily functions, even in the absence of external electric fields. For example, nerves…

Related Documents