You have often read articles, listen or watch the video on youtube about the dangers of cell phone radiation. My professor once threw a question that provoke my curiosity, even though he already knew the answer, he asked, "Is it true that cell phone radiation can boil eggs and corn seeds (pop-corn)?" After that I found articles on the internet about this. Honestly I never give a thought about this before. Finally, after I learned things related to it, I came into a conclusion, and I want to share this with the wider community.
The conclusion is: cellphone radiation is not dangerous for us, human, at all.
How can I come into this conclusion? I will explain this in plain english, step by step.
To understand this, we need to recall the theory of the electromagnetic waves that we get in high school. It is closely related because we use radio waves (especially microwaves) to communicate. Then we have to understand the meaning of radiation, it is important that we do not misinterpret the word "radiation" in the context of the wave. From the results of my search, this is the one thing that misinterpreted so much by the public.
What is electromagnetic waves?
Electromagnetic waves are waves that can propagate without any medium. These waves are transverse waves which have disturbances in the form of an electric field (E) and magnetic (B), perpendicular to each other and both perpendicular to the direction of wave propagation. Because the disturbance, the electromagnetic waves can propagate in a vacuum. This wave has some spectrum based on the frequency and wavelength (inversely proportional to each other), namely: radio waves, infrared, visible light, ultraviolet, X-rays and gamma rays. Many say that microwaves are not part of the radio waves, but microwaves are radio waves which have the high frequency. Each of the spectrum has its own usefulness, but I will not talk about it, you can find out for yourself.
What is radiation?
Radiation is energy that is emitted in the form of particles or waves. How does it affect the surrounding environment? There is a story to explain this: "In a pond there are water, fishes and leaves that fall into the pond. If we throw a stone into a it, the location the fall of the stone in the water will cause ripples which spread out in a circle. The ripple is a wave that shows the movement of the energy supplied by the stone, and energy the spread of the location of the fall of the stone in all directions. When the ripples reach the leaves, the leaves will be lifted to the top of the wave. the fishes can feel the energy arising at the fall of the stone."
Radiation consists of several types, and each type has a wavelength. In terms of its mass, the radiation can be divided into electromagnetic radiation and particle radiation. Electromagnetic radiation is radiation that do not have mass. This radiation consists of radio waves, micro, infrared, visible light, x-rays, gamma rays and cosmic rays. Particle radiation is radiation in the form of particles that have mass, for example, alpha particles, beta and neutron.
In terms of their electrical charge, the radiation is divided into ionizing and non-ionizing radiation. Ionizing radiation is radiation which, if it hit something it will cause electrically charged particles called ions (ionization). These ions then will cause effects on materials, including living things. X-ray, gamma, cosmic, alpha particles, beta and neutron are ionizing radiation because it can cause ionization directly. The ionizing radiation is the most damaging radiation. Ionizing radiation is measured by the amount of ionizing radiation that causes dry air at normal temperature and pressure (NTP). Non-ionizing radiation is radiation that can not cause ionization, such as microwave, radio, infrared, visible light and ultraviolet.
Well, from the classification of radiation above, it can be seen that microwaves is harmless. Microwave radiation is often misunderstood as radioactivity (as in the nuclear change of chemical substances), whereas the real intention of the microwave radiation is the energy that radiates from a source of microwaves. In addition, in the United States and Europe are rules that limit the radiation absorbed by the human body from the cellphone, this measure is called SAR (Specific Absorption Ratio). In the United States limits the maximum SAR value is 1.6 W/Kg which is equivalent to one network, whereas in Europe is 2 W/Kg which is equivalent to 10 network. Other countries are the most have regulations similar or even the same on this matter, as most other countries have relied on regulations that exist in Europe and America. SAR values of cellphones can be found in its product information, or you can google it. I assure you, the cellphones on the market certainly has a SAR value that meet the regulation, because if it is not, it should not be put into production.
-------------"Use Your Cell Phone Wisely" -------------