Painting with light to show WiFi networks

Posted to Data Art  |  Tags: , ,  |  Nathan Yau

WiFi is everywhere, floating and whirling around us somehow, but where is it really? In Immaterials: Light painting WiFi, Timo Arnall, Jørn Knutsen and Einar Sneve Martinussen use a rod of blinking lights to visualize signal strength in their college town.

In order to study the spatial and material qualities of wireless networks, we built a WiFi measuring rod that visualises WiFi signal strength as a bar of lights. When moved through space the rod displays changes in the WiFi signal. Long-exposure photographs of the moving rod reveal cross sections of a network’s signal strength.

The stronger the signal strength, the more lights that illuminate in that specific spot, updating as the walker/carrier moves. Then using long-exposure photographs, the lights are recorded for beautiful results. Super simple concept, yet very effective. See the device in action in the video below.

[YOUrban via @wattenberg]



Marrying Age

People get married at various ages, but there are definite trends that vary across demographic groups. What do these trends look like?

How We Spend Our Money, a Breakdown

We know spending changes when you have more money. Here’s by how much.

Graphical perception – learn the fundamentals first

Before you dive into the advanced stuff – like just about everything in your life – you have to learn the fundamentals before you know when you can break the rules.

Think Like a Statistician – Without the Math

I call myself a statistician, because, well, I’m a statistics graduate student. However, the most important things I’ve learned are less formal, but have proven extremely useful when working/playing with data.