Researchers from the École Polytechnique Fédérale de Lausanne (EPFL) have found a way to improve the cell service inside trains by treating the train windows with lasers.
This was done as a result of the common connectivity problems that most people face while traveling in trains, which is a direct result of the insulated glass windows.
The reason why insulated glass windows are such a big problem is because in order to make sure the passenger cars don’t suffer from fluctuating temperatures, the people in charge use double glazed windows that come with an ultra thing metal coating.
While this coating helps reflect the heat/cold coming from outside the car, it also unfortunately deflects the telecommunications signals too.
This simple engineering issue causes the passenger cars to become dead zones for mobile activity, forcing the builders to add boosters and other electronics just to maintain minimal connectivity.
This was the issue that the researchers were trying to issue when they decided to use lasers to alter the metal coating in a way that it would let the telecommunications signals through.
The actual process involved the use of a high precision laser, which removed approximately 2.5% of the metal coating, while at the same time inscribing a special pattern that would leave just enough space for the signals to come through.
All this would happen at such a specific level and size that the insulation properties of the windows aren’t harmed in any form whatsoever.
While it may not be as exciting as putting Internet In Space, but it’s still good enough to make the lives of millions of passengers a bit easier.