Sometimes there are situations when an Internet connection may be needed anywhere, in the most unexpected places and conditions (public, air, rail and personal transport). And if we take into account the fact that human curiosity knows no boundaries, then the emergence of the question of the possibility / impossibility of using the Internet, say, under water, will not seem so unexpected.
Toshiba at CES 2012 has already demonstrated the performance of its tablet PC in terms of its full immersion in an aquarium with water. However, this happened in impractical, if you will, non-extreme conditions. But it is interesting whether Wi-Fi will work in conditions of “as close to combat as possible”, i.e. at a greater depth than the bottom of the aquarium.
Inquiring minds, as reported by akademintorg.ru, have already been tested using live testing, so to speak, by immersing Wi-Fi receivers 1.5-2 meters deep in fresh water. The result was predictable - the connection established before the dive was interrupted at a depth of more than 30 cm.
Remembering the course of physics from the school curriculum, it is easy to understand that water is an excellent conductor of electric current, and in such conductors electromagnetic waves, to which the Wi-Fi signal belongs, do not spread. This is where the radio wave decay effect occurs. This effect is especially noticeable in rainy weather, for example, in a thunderstorm, when the Wi-Fi signal level is significantly reduced compared to the signal strength in clear weather.
Thus, the conclusion about the inoperability of modern Wi-Fi transmitters in deep-water conditions becomes logical. Therefore, avid divers, perhaps, will not be able to share information about what they saw in real time, but most likely they will have to get to the surface of the water for this, or resort to special ultrasonic equipment. But that's another story.
Read continued: Wi-Fi Aviation
The content of the cycle "Wi-Fi":
Wi-Fi car
Wi-Fi deep water
Wi-Fi Aviation
Wi-Fi rail
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