Science and Technology
Gujarat’s famous archeological monument “Rani ki Vav (The Queen’s Stepwell)” is among five international heritage sites to be recreated digitally using latest technology in Scotland, UK. The Scottish Ten — an ambitious five-year-project aims to create accurate digital models of Scotland’s five Unesco-designated World Heritage Sites and five international heritage sites in order to help in conservation and management of these sites.
The digital models will help conserve significant historical sites for the benefit of future generations and provide 3D digital models and data to site staff to better preserve these sites. The laser scanning measurements will enable identification of problems and rate of decay of the monuments which can then be addressed quickly. Scotland hopes that digitally documenting stepwell would bring the site to a much wider audience and enhance both its national and international profile.
Researchers at Rice University in the US accidentally created microscopic diamonds from coal which exist only for some seconds. Scientists witnessed this intriguing effect while working on ways to chemically reduce carbon from anthracite coal and make it soluble. They used a powerful electron beam for the purpose knocking the hydrogen atoms off the coal. Surprisingly, the energy input brought clusters of hydrogenated carbon atoms together, some of which transformed into the lattice-like structure of nano-diamonds. Even without the kind of pressure needed to make macroscale diamonds, the energy knocked loose hydrogen atoms to kick off a chain reaction between layers of graphite in the coal that resulted in diamonds between 2 and 10 nanometres wide.
But the most of the nanodiamonds were seen to fade away under the power of the electron beam in a succession of images taken over 30 seconds. The small diamonds are not stable and they revert to the starting material, the anthracite.
As per RBI’s guidelines to all banks:
- All new ATM’s installed from July 1, 2014 should be “talking ATMs” with Braille keypads.
- Banks should lay down a roadmap for converting all existing ATMs as talking ATMs with Braille keypads. The same may be reviewed from periodically by the Customer Service Committee of the Board.
- Banks should provide magnifying glasses in all bank branches for the use of persons with low vision, whenever they need for performing banking transactions with ease. A notice about the availability of magnifying glasses and other facilities available for persons with disabilities should be displayed at a prominent place.