•Background information

WiFi is a network that uses radio waves to send information from one device to another. This technology uses Ultra High Frequency (UHF) waves, which are under the same electromagnetic spectrum as the echolocation sound waves that some animals, use to communicate under the sea.

To echolocate, sea animals produce high-frequency clicks, which create waves that travel through water. This waves bounce off of objects, returning as echoes for the animals to interpret.

•Greatest challenges

While looking for a solution to approach the challenge, one of us remembered seeing in the news that there was a man in the UK who hacked his digital hearing aids to create a device that made Wi-Fi fields audible to humans. Even when this article wasn't proved by a reliable source, the case lead us to start wondering if Wi-fi waves could be transmitted in a similar way to which echolocating waves propagate underwater. The main challenge we faced was searching for the scientific implications of our theory, since we had practically no solid starting point. Another problem emerged when we were looking for information, we didn't know where to start. Fortunately, at the end, we've managed to create something unique and useful.

•Our solution

Nature-fi consists on a Wi-fi transmitter and the strategic location of wireless underwater ultra-sensible sensor networks. The transmitted Wi-fi vibrations would travel through water, bouncing on underwater objects until the networks locate them. This system would work through an electromagnetic field and an adapter that made it able to decode and transmit the vibrations.

•Used resources

For this challenge we only required of reliable information. Some articles and books helped us proving the project's veracity, such as:
-H. G. Georgi (2015). The physics of waves [Pdf] (2nd ed.). Retrieved from http://www.people.fas.harvard.edu/~hgeorgi/onenew.pdf&ved=2ahUKEwjiqPfFpKzlAhVV_J4KHcZlA_Y4ChAWMAF6BAgJEAE&usg=AOvVaw2DBeVb-QYV3GEcVYybfQGz
-I. G. Main (2005). Vibrations and waves in physics (6th ed.). London, England: Imperial College of Science and Technology.
-J. L. Volakis, A. Chatterjee and L. C. Kempel, Finite Element Method for Electromagnetics, Oxford University Press, 1998
-P. D. Loach, J. P. Webb, R. C. Ireland and E. M. Freeman, Alternating-Direction-Implicit Finite Element Method applied to 3D ELF problems, Proceedings of CEFC 2000, published by IEEE Press
-R. M. Matheson, (2018, August 22). Wireless communication breaks through water-air barrier. Retrieved October 21, 2019, from http://news.mit.edu/2018/wireless-communication-through-water-air-0822