David Brin: Solar cells thinner than a thread of spider silk

Solar cells thinner than a thread of spider silk created by scientists Solar cells thinner than a thread of spider silk and so flexible they can be wrapped around a single human hair have been created by scientists. By Danielle Demetriou, Tokyo The Telegraph, 09 Apr 2012 The ultra-thin film consists of electrodes on a …

Cognitive Radio for Open Spectrum

From Wikipedia (Cognitive Radio) Cognitive radio is a paradigm for wireless communication in which either a network or a wireless node changes its transmission or reception parameters to communicate efficiently avoiding interference with licensed or unlicensed users. This alteration of parameters is based on the active monitoring of several factors in the external and internal …

Houston grandmother is nation’s first ‘Super Wi-Fi’ user

Houston grandmother Leticia Aguirre began hosting what’s believed to be the nation’s first residential “Super Wi-Fi” hot spot this month. Super Wi-Fi, a long-range, wall-piercing version of Wi-Fi that is broadcast on unused TV channels, could be a boon for both rural and urban residents who lack broadband access. Credit: Jade Boyd/Rice University When the …