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   New Delhi, May 30 (IANS) All the gram panchayats will have the wi-fi connectivity by October 2018 under the Bharat Net programme, a senior government official said here on Monday. "By October 2018, the plan is to finish coverage of all gram panchayats with wi-fi as the last mile solution," Telecom Secretary J.S. Deepak said here at a round table conference on the topic 'Data Connectivity for the next Billion'.  The conference was organized on the occasion of the annual general meeting of the Cellular Operators Association of India (COAI). The Bharat Net initiative is committed to take the optical fibre to each and every gram panchayat in next three years, Deepak said. Under the programme, wi-fi will be delivered, with a viability finding kind of approach, to each and every citizen at the price of about Rs.100 per month, he said. "In the first phase of the program, by March 2017, we will have 100,000 gram panchayats with 80-100 mbps connectivity with a last mil...

A team of researchers at the University of Cambridge, UK, has developed a nanoscale engine — just a few billionths of a meter in size  which uses light to power itself. Reversible assembly of light-powered nano-engines. pNIPAM – poly(N-isopropylacrylamide). Image credit: Tao Ding et al / University of Cambridge. The prototype nano-engine is made of small charged particles of gold (Au), bound together with temperature-responsive polymers in the form of a gel. When the engine is heated to a critical temperature (89.6 degrees Fahrenheit, or 32 degrees Celsius) with a laser, it stores large amounts of elastic energy in a fraction of a second, as the polymer coatings expel all the water from the gel and collapse. This triggers a controllable number of gold nanoparticles to tightly bind in clusters. But when the device is cooled, the polymers take on water and expand, and the gold nanoparticles are strongly and quickly pushed apart, like a spring. “It’s like an explosion. We have hundred...

 In the 21st century some reports found that nuclear weapons are still controlled by floppy disks. The US Government Accountability Office found that the defense department was still using 1970s-era computer systems.   The Pentagon coordinates US nuclear weapons using 8inch floppy disks #shocking Floppy disks are replaced with CDs(Compact disk) in late 1990s as CD is having better storage capacity then floppy disk. The report said: "Agencies reported using several systems that have components that are, in some cases, at least 50 years old. “Department of Defense uses eight-inch floppy disks in a legacy system that coordinates the operational functions of the nation’s nuclear forces. “Department of the Treasury uses assembly language code – a computer language initially used in the 1950s and typically tied to the hardware for which it was developed.”