In the age of modern technology and advancements, we benefit from a list of inventions to make our lives easier and more comfortable than before.
But all of these inventions have not only improved our lifestyles but have also been shown to be destructive and detrimental to our mental and physical health.
Wireless devices are one of the most important inventions of the modern age. The wireless device plays an important role in our daily life. It is the most common mode of communication and access to Internet connections, as it works on the principle of frequency signals and signal transduction and uses radio frequency signals for communication.
Wireless devices are often used as mobile phones, as they are meant to connect one end of the world to the other.
Calculate safe distance from wifi router
With all the potential dangers of WiFi exposure, it makes sense that you want to organize your home router to minimize health effects. But what is the safe distance?
Applying the inverse square law of physics would be a great starting point in determining what would be a suitable distance.
The inverse square law states that the amount of exposure to an EMF or RF radiation source decreases substantially in proportion to its distance from the squared source.
On the contrary, the closer you are to a radiation source, which in this case is WiFi, the greater the magnitude of your exposure.
Based on this information, let’s say your WiFi has a transmitting power of 30 milliwatts (mW). To establish what a safe distance is, you need to consider the inverse relationship between distance from the router and power density.
Let’s calculate it.
Inverse Square Law Mathematics
The approximate power density function is given by the equation P * G / 4Πr2, where P is the transmit power, G is the antenna gain, and 4Πr2 denotes the surface area of a sphere.
Let’s say your 30mW WiFi router is placed at a distance of 30cm and 1m respectively from you. The power density function can be obtained as follows:
26.5 for a distance of 30 cm. Calculate 30 / 4Π (0.3) 2 to obtain the power density of
2.387 for a distance of 1 m (100 cm). Calculate 30 / 4Π (1) 2 to obtain the power density of
You can use power density to estimate a safe distance that will keep your radiation level to a minimum. In terms of transmission power, the radiation from the WiFi router varies between 30mW for low-power transmitters and 500mW for high-power transmitters.
It is also important to note that the required distance may be greater depending on the value of the antenna gain (G). So, it can be 1.3 to 7 times higher than the values obtained from the calculations.
Using an EMF meter
If math isn’t your strong suit (it isn’t for most people), consider getting your hands on an EMF meter and measuring radiation levels at different distances from your router.
The general rule of thumb is to aim for a reading between 3 mW / m2 and 6 mW / m2. It is generally considered safe for household members. This distance will vary depending on the transmitting power of your router.
If you live in an apartment complex or neighborhood where the houses are interconnected or close together, you may have WiFi coming from all directions.
You can also put your router in a location that is farther away from you and other members of your household, only to be bombarded by WiFi from the router on the other side of the exterior wall next to you.
In that case, you should consider other ways to reduce your exposure to EMF radiation.
An emf meter is used to measure all levels of environmental radiation to which you are unintentionally exposed.
Are WiFi Routers Secure?
When electromagnetic fields are emitted from a WiFi router, they do not immediately cause disease or damage. This is probably why many people choose to believe that their emissions are safe.
However, contrary to popular belief, emissions from WiFi routers can interfere with our bodily functions after prolonged exposure. This may eventually result in diagnosable diseases such as neurodegenerative diseases and cancer.
Since these diseases develop over a long period of time, it is difficult to prove that prolonged emissions from WiFi routers are their direct cause. The lack of solid evidence on the subject is the reason why the International Agency for Research on Cancer (IARC) classifies WiFi radiation as a potential class 2B carcinogen. This article and other studies are the reasons why EMF radiation from WiFi routers and other devices is considered unsafe.
In a previous article, it was mentioned that IARC had claimed that epidemiological studies involving humans using WiFi and cell phones for some years were inconclusive.
However, when similar studies used rodents instead of humans, it was found that radiation can cause cancer or increase the prognosis of cancer. They also found other changes in the brain and blood-brain barrier of animals that were exposed to EMF emissions.
How data is transmitted wirelessly.
Traditionally, data transfer has always been done using cables. However, all that changed with the introduction of wireless technology in the late 2000s.
However, the underlying science is quite sophisticated. To help the data travel through the air, we use a router which is basically a digital encoder and transmitter.
The data to be sent to the router is sent over cables, which are then encoded into a high-frequency electromagnetic pulse and explode several thousand times per second.
Our smart devices, whether they are smartphones or laptops, are equipped with receivers that receive the encoded EMF signal and then decode it.
The situation changes when we want to send something from our phone. Our phones transmit data and the router picks it up.
As is probably clear from this explanation, this happens a few thousand times per minute.
EMF waves dissipate with distance, so if you stray too far from your router, you start to lose connection strength.
However, they are high-frequency waves and therefore can easily pass through physical barriers such as walls.
Since the router transmits these waves thousands of times per minute, they do not have time to dissipate naturally and therefore tend to accumulate in enclosed space.
If a person is exposed to that high level of radiation every day, it can cause serious health complications.
So a base figure to safely avoid radiation from the WiFi router is a distance of around 20 feet. However, it is important to note that this will vary between routers, so always make sure to test yours before making any changes to your configuration. Reducing your exposure to EMF radiation from WiFi is pretty easy once you know the facts, so start measuring!