What color is the Wi-Fi wave?
You will be surprised by the beautiful color of Wi-Fi waves under Luis Hernan's lens. From color, users can know the location of strong weak Wi-Fi waves.

Luis Hernan is a student at Newcastle University in England.These images are part of the Ethereal Digital project that aims to be able to see invisible things

Wi-Fi waves from the outside get stronger when entering the door
Luis Hernan set up a system that can measure the weak strength of Wi-Fi waves and connect to a variety of colorful LED lights and capture them through exposure photography.
The color order shows the weak strength of Wi-Fi.The signal strengthens in the color order, particularly the weakest is blue, followed by violet, green, yellow and the strongest are red.
The shape of Wi-Fi waves varies widely if the user moves the device
The color distribution shows there are many Wi-Fi wave sources
Wi-Fi waves in a cafe with the transmitter set in the window
Luis Hernan has also created a completely free app called Kirlian for Android devices, allowing people to see Wi-Fi on their smartphones.
Smart phones use Kirlian application, colors will change when Wi-Fi is strong or weak
Update 25 May 2019
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