Current Affairs 9th & 10th March 2025
Current Affairs 9th and 10th March 2025 by Saurabh Pandey Sir
NEW TIGER RESERVE
🐅 New Tiger Reserve: Madhav National Park in Madhya Pradesh is now India’s 58th tiger reserve, as announced by Union Environment Minister Bhupender Yadav.
🌳 State Recognition: This is the ninth tiger reserve designated in Madhya Pradesh, highlighting the state’s commitment to wildlife conservation.
🐾 Current Tiger Population: The reserve currently hosts five tigers, including two recently born cubs. FACTS The Madhav National Park is situated on the northern fringe of the Central Highlands of India, forming a part of the Upper Vindhyan Hills intermixed with plateaus and valley sections. Sakhya Sagar and Madhav Sagar are the two lakes in the southern part of the park, providing the aquatic biodiversity and lifeline for the terrestrial species. Marsh Crocodiles are in abundance in Sakhya Sagar lake. Due to this, the lake looks like a “Crocodile Safari” and attracts special attention of tourists. Madikhera dam is situated in the northwestern part of the Park
🏛 HistoricalSignificance:TheJalanatheswarartempleinThakkolamisakeysiteforTamilhistory,particularlyduringtheCholadynasty.
🌧 StructuralDamage:Thetemple’s northern outer wall has collapsed, and the temple tank is in poor condition, requiring urgent restoration
🕰 Age of the Temple: The temple dates back to the 6th Century and was originally constructed by the Pallavas.
📜 Inscriptions: There are 51 inscriptions in the temple, including references to Pallava King Aparajita and the town
Fuselage
● In a first, the rear fuselage for the light combat aircraft (LCA) Tejas Mk1A, manufactured by Alpha Tocol Engineering Services Private Ltd., a private sector enterprise, was handed over to Hindustan Aeronautics Ltd. (HAL).
● A fuselage is part of the main body of the aircraft, which holds the pilot, passengers, and cargo, while the rear fuselage supports the tail section and its associated components
The Role of Nanoparticles in Ink Development -Currency Printing What Are Nanoparticles? Recently, scientists from the Institute of Nano Science and Technology (INST) in Mohali and the Bhabha Atomic Research Centre (BARC) in Mumbai have made significant strides in developing new inks using nanoparticles. These tiny particles are less than 100 nanometers wide, which is about 1/100,000th the width of a human hair! Properties of Nanoparticles Because of their minuscule size, nanoparticles exhibit unique properties that larger objects do not. They interact differently with light, respond uniquely to magnetic fields, and are chemically more reactive. This makes them incredibly useful in various applications, including the development of advanced inks for banknotes. The Composition of the New Ink Doping Process Explained The new ink is made from strontium bismuth fluoride (Sr2BiF7) doped with lanthanide ions. Doping involves adding impurities to a crystal to give it new properties. In this case, the addition of lanthanide ions enhances the ink’s fluorescent capabilities, making it even more effective for security purposes.
The Manufacturing Process:
Coprecipitation Technique To create these nanoparticles, the researchers used a coprecipitation technique. This involves dissolving metal salts in a solvent to form a clear solution and then adding a precipitation agent while stirring. This method is not only effective but also easy to scale up for mass production. Screen Printing Method Once the nanoparticles are ready, they are blended with polyvinyl chloride (PVC) ink and printed onto the banknotes using a screen printing technique. This method uses a stencil and a squeegee to transfer the design onto the paper, ensuring precision and clarity. The Two-Light Trick: How It Works Fluorescence Explained When the researchers shine a 365-nm wavelength ultraviolet light on the printed symbols, they emit a cool blue glow. This phenomenon, known as fluorescence, occurs when an object absorbs light of one wavelength and emits light of a longer wavelength. Under 395-nm light, the letters glow magenta, and when exposed to near-infrared light of 980 nm, they fluoresce with an orange-red color. This multi-color fluorescence adds an extra layer of security to the banknotes
