Gallery: These Weird Rainbow Ghosts Show How Wi-Fi Signals Are Shaped

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    Photo: Luis Hernan
    01

    Architecture-entrance

    Luis Hernan visualizes wireless networks in his new series *Digital Ethereal*
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    Photo: Luis Hernan
    02

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    The swirling colors are the result of the Kirlian Device that Hernan designed.
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    Photo: Luis Hernan
    03

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    The Kirlian Device is built out of birch plywood and houses an Arduino UNO board that’s connected to an Arduino WiFi shield. These components measure the strength of wireless signals and translate that data into various colors, which are then projected on a strip of LEDs.
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    Photo: Luis Hernan
    04

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    Hernan swirls the device around and captures the colors through long-exposure photography.
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    Photo: Luis Hernan
    05

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    The resulting images are ghostly visualizations of the invisible energies around us.
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    Photo: Luis Hernan
    06

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    Kind of pretty, right?
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