The Indian Institutes of Management (IIMs) are central government-owned-public business schools for management profession offering undergraduate, postgraduate, doctoral and executive programmes along with some additional courses in the field of business administration. The establishment of IIMs was initiated by Jawaharlal Nehru, the first prime minister of India, based on the recommendation of the Planning Commission of India.IIMs were declared institutions of national importance by the Ministry of Human Resource Development (MHRD) after the passage of Indian Institutes of Management Act, 2017...

A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency. == Synopsis == The Rb standard is the most inexpensive, compact, and widely produced atomic clock, used to control the frequency of television stations, cell phone base stations, in test equipment, and global navigation satellite systems like GPS. Commercial rubidium clocks are less accurate than caesium atomic clocks, which serve as primary frequency standards, so the rubidium clock is a secondary frequen...