Dead zones, black holes, shadows…we all have our names for those bad-reception areas that are a nuisance in a world of ubiquitous, mobile communication, but it’s hard to see exactly why they exist and how […]

Dead zones, black holes, shadows…we all have our names for those bad-reception areas that are a nuisance in a world of ubiquitous, mobile communication, but it’s hard to see exactly why they exist and how […]