History of radar for various purposes; on the Shuttle Radar Topography Mission, the entire planet was mapped at a 30-m resolution. The Jodrell Bank Observatory, an operation of the University of Manchester in Britain, was originally started by Bernard Lovell to be a radar astronomy facility. It initially used a war-surplus GL-II radar system operating at 71 MHz (4.2 m). The first observations were of ionized trails in the Geminids meteor shower during December 1945. While the facility soon evolved to become the third largest radio observatory in the world, some radar astronomy continued. The largest (250-ft or 76-m in diameter) of their
December 2014 Assam violence December 2014 Assam violence In December 2014, a series of attacks by militants resulted in the deaths of more than 76 people in India. The attacks took place in the Chirang, Sonitpur and Kokrajhar districts on 23 December 2014. They have been attributed to the Songbijit faction of the National Democratic Front of Bodoland: NDFB(S). The Adivasi people of Assam are mostly tea plantation workers. They are famously known as Tea Tribe ; some of them are the descendants of labourers brought to Assam by the British colonial rulers, while others are relatively recent migrants from other parts of India.