What happens when electromagnetic waves influence the human body?

What happens when electromagnetic waves influence the human body? This is a problem that voting of reality is heard from time to time. By influencing electromagnetic waves about this, three things can happen: that it is transparent for those who absorb them or produce ionization. These three effects depend on two things: of the wavelength of radiation and the type of atoms or molecules that form the matter.

When matter absorbs the waves, his molecules increase his energy in two ways. In one of them the atoms of the molecules, which always vibrate around their balance positions, increase the amplitude of the vibrations. In the other, the molecules, just like a whole, begin to rotate. Both effects produce a temperature rise. When the radiation stops, the molecules return to their lowest energy level, the fundamental level. Radiation can increase the energy of atomic electrons so that they jump to a higher energy level, but without losing them to the atom, for example on a staircase, climb a step. However, when the electromagnetic waves of very short wavelength (high energy) influence the electron, the atom loses the electron; It is said that there has been an ionization: the atom becomes a chemically active ion. This transformation of the atom changes the molecule of which the part forms and can damage a process that depends on the integrity of that molecule. Most ultraviolet waves, visible and the highest wavelength do not have enough energy to ionize an atom. It is called non -ionizing radiation. Ionize the others.

We describe the effects of electromagnetic waves on the human body that starts with those of the longest wavelength: our body arrives radio, television and other forms of communication, but it is transparent for them. Microgwaves rotate the molecules and heat the internal tissues, but they can also cause them carefully. Infrared waves ensure that molecules vibrate and their physiological effect is heated, so that we burn our skin when sunbathing without caution. The visible light is strongly absorbed by the human body and produces jumps in the electrons of the atoms, but their energy is not enough to expel them from the atom, so it has no significant effect. Ultraviolet waves are strongly absorbed in the exciting electrons of the skin. The lowest energy does not drift electrons from atoms, but produce skin heating (again the sun) and retina damage. Small wavelength ultraviolets ionize atoms, change molecules and can cause skin cancer. X -series and gamma rays penetrate the human body and produce ionization. They change molecules and can therefore produce mutations and cancers of different types.