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More Fun Than Fun: Evolution on Islands in Water, in the Sky and Elsewhere

More Fun Than Fun: Evolution on Islands in Water, in the Sky and Elsewhere
science.thewire.in - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from science.thewire.in Daily Mail and Mail on Sunday newspapers.

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Scientists develop new material that repairs itself without external intervention

Scientists develop new material that repairs itself without external intervention SECTIONS Last Updated: Jul 29, 2021, 10:10 AM IST Share iStock Cluster of raw piezoelectric crystals 3D (Representative Image) NEW DELHI: Scientists have developed piezoelectric molecular crystals that repair their own mechanical damage without the need for any external intervention, the Department of Science and Technology (DST) said on Saturday. Piezoelectric crystals are a class of materials that generate electricity when it undergoes a mechanical impact. Devices that are used daily often break down due to mechanical damage, forcing users either to repair or replace them. This decreases the life of the equipment and increases maintenance costs. In many cases, like in a spacecraft, human intervention for restoration is not possible.

West bengalNirmalya ghoshSumanta karanBhanu bhusan khatuaDepartment of scienceEngineering research boardIndian institute of science educationSociety of photoIndian instituteScience educationSwarnajayanti fellowshipPhoto optical instrumentation engineersமேற்கு பெங்கல்நிர்மாலிய கோஷ்துறை ஆஃப் அறிவியல்பொறியியல் ஆராய்ச்சி பலகை

Stars Experience a Midlife Crisis When They Become Inactive, Astronomers Say

Image credit: (NASA/JPL-Caltech/GSFC) Last year, scientists observed a curious phenomenon around the Sun: the star had become “unusually quiet” in comparison to its galactic siblings. We know stars as old as the Sun become inactive as they age, but it was never fully understood why, and how, this process unfolds. A new study offers a theoretical underpinning to the mystery middle-aged stellar objects (almost 4.6 billion years old) tend to experience a “midlife crisis,” and this happens due to dramatic changes in their activity, linked to changes in the magnetic field and rotation rates. Published in Monthly Notices of the Royal Astronomical Society: Letters on Wednesday, the theory is among the first to explain the unusual signs of weakened activity astronomers have noted for a while in middle-aged stellar systems. It also forms the foundation to understand how the stars may evolve long term.

India generalWest bengalDibyendu nandyMonthly notices of the royal astronomical societyIndian institute of science educationMonthly noticesRoyal astronomical societyMap more thanIndian instituteScience educationமேற்கு பெங்கல்மாதாந்திர அறிவிப்புகள் ஆஃப் தி அரச வானியல் சமூகம்இந்தியன் நிறுவனம் ஆஃப் அறிவியல் கல்விமாதாந்திர அறிவிப்புகள்அரச வானியல் சமூகம்இந்தியன் நிறுவனம்

Stars like our Sun goes through a midlife crisis: Indian researchers reveal mysterious phase

Stars like our Sun goes through a midlife crisis: Indian researchers reveal mysterious phase Stars like our Sun goes through a midlife crisis: Indian researchers reveal mysterious phase Stars like our Sun experience a midlife crisis with reduced activity and transitioning into an inactive phase. advertisement UPDATED: July 29, 2021 12:07 IST Magnetic fields are produced by a dynamo mechanism inside stars and emerge through the surface to the outer atmosphere, where they generate stellar magnetic storms. (Photo: NASA / GSFC / Solar Dynamics Observatory) A team of astronomers from India and Nepal have detected that stars also go through a midlife crisis, where they experience dramatic breaks in their activity, rotational rates, transitioning into an inactive phase. The study provides a new technique to measure the age of stars past their middle age.

West bengalBindesh tripathiDibyendu nandyUniversity of wisconsinMonthly notices of the royal astronomical societyIndian institute of science educationSolar systemMonthly noticesRoyal astronomical societyIndian instituteScience educationமேற்கு பெங்கல்பல்கலைக்கழகம் ஆஃப் விஸ்கான்சின்மாதாந்திர அறிவிப்புகள் ஆஃப் தி அரச வானியல் சமூகம்இந்தியன் நிறுவனம் ஆஃப் அறிவியல் கல்விசூரிய அமைப்பு

Research, public outreach in health the need of the hour: expert

Research, public outreach in health the need of the hour: expert
thehindu.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thehindu.com Daily Mail and Mail on Sunday newspapers.

South africaSoumya swaminathanArvinda nattuIndian institute of science educationWorld health organizationRna technology transfer hubsChief scientistIndian instituteScience educationTransfer hubsIntegrated phdசௌமிய சுவாமிநாதன்இந்தியன் நிறுவனம் ஆஃப் அறிவியல் கல்விஉலகம் ஆரோக்கியம் ஆர்கநைஸேஶந்தலைமை விஞ்ஞானிஇந்தியன் நிறுவனம்