Science behind it Source emits sound waves, and listens for their reflections by objects in their surroundings. Based on what the reflected waves, or echoes, sound like, the animal or device understands its environment. Animals that use echolocation emit high-frequency sound pulses beyond the range of human hearing. Bats – …
Read More »Somatic mutations: a genomic revolution hiding inside our cells
The human genome has 23 pairs of chromosomes, one inherited from each of our parents. The genome is the blueprint of our genetic makeup. As the cells divide, the DNA is copied with extremely high accuracy due to proteins that proofread and correct errors in the DNA. But despite this …
Read More »As Pragyan digs deep into moon, scientists at a VSSC lab turn their gaze to solar wind
Syllabus: Space technology Context: Aditya-L1 mission, meant to study the sun, lifts off in September. First space-based Indian mission to study the sun from a halo orbit around the Lagrangian point 1 (L1) of the sun-earth system. XL variant of the Polar Satellite Launch Vehicle (PSLV) to place the Aditya-L1 …
Read More »Why did Chandrayaan-3 land on the near side of the moon?
Syllabus: Space technology Near side refers to the portion of the moon visible to us (about 60%). It is always the same side that is visible from Earth because the moon takes the same time to rotate about its axis as it does to circle around the Earth. The ‘new …
Read More »Cases in Manipur to Assam
Syllabus: Structure, organization and functioning of the Executive and the Judiciary Why in NEWS The Supreme Court on Friday asked Gauhati High Court Chief Justice to nominate one or more judicial officers in Assam to take charge of the pre-trial processes in 27 cases related to the ethnic violence in …
Read More »GIS mapping of water, sewer lines in Chennai to be done by November
Context: Chennai Metropolitan Water Supply and Sewerage Board (CMWSSB) is set to complete by November the work to map water and sewer infrastructure in the city with the geographic information system (GIS) database and geo-tag the locations. executed under the Tamil Nadu Urban Flagship Investment Programme funded by the Asian …
Read More »Cleantech, for an inclusive green future in India
Syllabus: Green economy India’s experience has shown that climate action is only effective and embraced at scale if it aligns with the development aspirations of millions and contributes to economic growth. The green economy paradigm provides an optimistic pathway to align development and environmental outcomes. Example: building a solar park …
Read More »Xi wants both countries to handle border issue properly
Syllabus : Security challenges and their management in border areas – linkages of organized crime with terrorism. Why in NEWS China’s Foreign Ministry said early on Friday that its President Xi Jinping told Prime Minister Narendra Modi during talks on Wednesday that both sides “should bear in mind the overall …
Read More »28-ft Nataraja sculpture
Context: Indian culture will cover the salient aspects of Art Forms, literature and Architecture from ancient to modern times. Why in NEWS A 28-foot Nataraja statue, meant to be placed at the venue of the G-20 Leaders’ Summit to be held next month in New Delhi, was sent by road …
Read More »Chandrayaan 3 and other missions to moon
Other lunar missions this year Commercial Lunar Payload Services (CLPS) and Lunar Trailblazer from the U.S.. China’s lunar communication and navigation satellite constellation Japan’s Smart Lander for Investigating Moon (SLIM) Other lunar missions next year Beresheet 2 from Israel S.’s Volatiles Investigating Polar Exploration Rover (VIPER) China’s Lunar Exploration Programme …
Read More »