These data-driven images display the pulsating world of frequencies around us.

It may be visible to us only when our cell signals are poor, but our current era of rapid communication is fostered by a dense but invisible network of cell phone towers and their accompanying signals. Artist and researcher Nickolay Lamm, who writes for a website called MyVoucherCodes, sought to make this very important technology visible by displaying the wide, flat signal areas as colors that represent different frequencies. He varied the size of the honeycomb-sized grids depending on the number of cellphone users who typically pass through each area. The areas he has visualized include Chicago, Washington D.C., Los Angeles and New York, and it's interesting to see how differently the signal is distributed in each one.

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