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Subject: Science and Technology

  • [pib] Cabinet approves Central Sector Scheme “National Forensic Infrastructure Enhancement Scheme” (NFlES)

    Why in the News?

    The Union Cabinet, chaired by PM Narendra Modi, approved the National Forensic Infrastructure Enhancement Scheme (NFIES).

    Do you know?

    • Central sector schemes: They are 100% funded by the Union government and implemented by the Central Government machinery. It covers subjects from Union List (central subjects).
    • Centrally Sponsored Scheme (CSS): It has a certain percentage of the funding borne by the States and the implementation is by the State Governments.It covers subjects from Concurrent List (shared subjects).
      • States have some flexibility to modify schemes to suit local needs within central guidelines.

    About National Forensic Infrastructure Enhancement Scheme (NFlES)

    • The Central Sector Scheme NFIES aims to strengthen national forensic infrastructure, expand NFSU’s reach, and establish CFSLs to meet growing forensic demands.
    • It aligns with India’s goals of enhancing forensic capabilities and securing robust criminal justice outcomes.

    Key Components of NFlES:

    • Campuses of NFSU: Establishing campuses of the National Forensic Sciences University (NFSU) across India.
    • Central Forensic Science Laboratories (CFSLs): Setting up new CFSLs nationwide.
      • Delhi Campus Enhancement: Upgrading infrastructure at the Delhi Campus of NFSU.
      • Financial outlay: Rs. 2254.43 crore for 2024-25 to 2028-29, funded by the Ministry of Home Affairs.
    • Objectives:  
      • Enhancing the criminal justice system with timely and scientific forensic examinations.
      • Addressing the increased workload due to new criminal laws requiring forensic investigation for serious offences.
      • Mitigating the shortage of trained forensic professionals in Forensic Science Laboratories (FSLs).

    Impact and Benefits

    • Improved Efficiency: Ensuring high-quality forensic examinations for efficient criminal justice processes.
    • Technology Integration: Leveraging advancements to handle evolving crime methods effectively.
    • Capacity Building: Training more forensic professionals to reduce case backlogs and support a high conviction rate exceeding 90%.

    PYQ:

    [2017] ‘Recognition of Prior Learning Scheme’ is sometimes mentioned in the news with reference to:

    (a) Certifying the skills acquired by construction workers through traditional channels.

    (b) Enrolling the persons in Universities for distance learning programmes.

    (c) Reserving some skilled jobs to rural and urban poor in some public sector undertakings.

    (d) Certifying the skills acquired by trainees under the National Skill Development Programme.

  • Possible risks of “Acute Poisoning” due to high Capsaicin Levels

    Why in the News?

    Food safety authorities in Denmark have recalled three types of South Korean spicy instant noodles due to potential risks of “acute Capsaicin poisoning.”

    What is Capsaicin?

    • Capsaicin, the chemical responsible for chili pepper spiciness, is primarily found in the white membrane (placenta) of some chili peppers.
    • Mechanism of Capsaicin:
      • Capsaicin binds to TRPV1 receptors in the human body, which detect heat and pain.
      • These receptors are tricked by capsaicin into reacting as if there is a rise in temperature, causing a painful, burning sensation.
      • The body’s response includes sweating, facial redness, runny nose, teary eyes, gut cramps, and diarrhoea as it attempts to cool down and expel the perceived heat.

    Evolutionary Benefits of Capsaicin

    • While birds avoid chilies, rodents consume them.
    • Birds lack TRPV1 receptors, unlike rodents act as seed dispersers, aiding in the germination of chili seeds.
    • Capsaicin serves an evolutionary purpose by deterring mammals from eating the seeds and protecting the plant from fungi and insects.
    • Producing capsaicin is resource-intensive, making spicy chilies more vulnerable to droughts.

    Human Affinity for Spicy Foods

    • Over 3,000 chili cultivars have been bred for varying color, taste, and pungency.
    • Some experts believe humans’ love for spicy foods stems from their antimicrobial benefits, which are particularly useful in hotter climates where food spoils faster.
    • Psychologists argue that eating spicy foods is similar to thrill-seeking activities, providing a simulated risk without actual danger.

    Potential Risks of Capsaicin

    • High concentrations of capsaicin can cause heartburn, gastrointestinal pain, and diarrhoea.
    • Long-term ingestion of high levels may lead to chronic gastrointestinal disorders.
    • Capsaicin poisoning is rare due to the large amount required for toxicity, with a person needing to consume around 2.5 liters of Tabasco sauce to overdose.

  • AMRSense Project

    Why in the News?

    • The AMRSense Project of the IIIT-Delhi has won the joint second prize in Trinity Challenge’s competition focused on combating Antimicrobial resistance (AMR).
      • The project shares the £600,000 joint second prize with ‘OASIS: OneHealth Antimicrobial Stewardship for Informal Health Systems,’ also from India.

    The Trinity Challenge

    • It is a global initiative aimed at fostering innovative solutions to major global health challenges, particularly focusing on pandemic and epidemic threats.
    • It operates as a charity organization.
      • Objective: The Trinity Challenge seeks to harness the power of data and analytics to address global health threats, including pandemics, epidemics, and antimicrobial resistance (AMR). It encourages collaboration across sectors to develop data-driven solutions that can protect populations worldwide.
      • Focus Areas: The initiative primarily focuses on:
    1. Enhancing global health security by improving early detection and response to disease outbreaks.
    2. Strengthening health systems and resilience against future health crises.
    3. Promoting innovations in public health, healthcare delivery, and data analytics to mitigate health risks.

    What is the AMRSense Project?

    • The AMRSense is aimed at addressing the critical issue of Antimicrobial Resistance (AMR) through a comprehensive and proactive approach.
    • The project focuses on empowering communities, particularly Community Health Workers (CHWs), with tools and strategies to enhance AMR surveillance and management.
    • It seeks to bridge the gap in data collection and evidence-based interventions at the community level in India.
    • Collaborators: The project involves collaboration with CHRI-PATH, 1mg.com, and the Indian Council of Medical Research (ICMR).

    Four Components of AMRSense:

    1. Community Engagement: AMRSense empowers CHWs with AI-assisted tools for accurate and simplified data collection related to AMR. This helps in improving the quality and reliability of AMR data gathered from local communities.
    2. Data Integration: The project integrates various sources of AMR-related data, including antibiotic sales, consumption patterns, and WHONet-compliant surveillance data. This integration is facilitated through open-source tools and APIs, aiming to create a unified AMR data ecosystem.
    3. Predictive Analytics: AMRSense employs federated analytics across the OneHealth ecosystem. This approach provides integrated insights into AMR trends, facilitating proactive decision-making and interventions to manage and mitigate AMR risks.
    4. AMRaura Scorecard: This tool is designed to monitor and evaluate AMR trends over time. It helps in assessing the effectiveness of interventions and guiding targeted strategies to combat AMR effectively.

    Impact and Future Prospects

    • AMRSense aims to fill gaps in CHW awareness, training, and motivation, enhancing community-level AMR data collection and management in India.
    • The project’s comprehensive approach seeks to foster proactive AMR surveillance and management practices.

    National Programme on AMR Containment

    • India has launched a “National Programme on AMR Containment” during the 12th five-year plan (2012-2017) which is being coordinated by the National Centre for Disease Control (NCDC).
    • The network of labs is being expanded in a phased manner and currently includes 35 state medical college labs in 26 States/UTs.

     

    PYQ:

    [2020] What is the importance of using Pneumococcal Conjugate Vaccines in India?

    1. These vaccines are effective against pneumonia as well as meningitis and sepsis.

    2. Dependence on antibiotics that are not effective against drug-resistant bacteria can be reduced.

    3. These vaccines have no side effects and cause no allergic reactions.

    Select the correct answer using the code given below:

    (a) 1 only

    (b) 1 and 2 only

    (c) 3 only

    (d) 1, 2 and 3

  • CRISPR Cas9 Gene Therapy for Sickle Cell Disease

    Why in the News?

    • India is close to developing a gene therapy using CRISPR-Cas9, a gene-editing tool for sickle cell disease (SCD).
      • SCD is a genetic blood disorder prevalent among the Scheduled Tribes.

    What is Sickle Cell Disease?

    • Sickle cell disease (SCD) is a group of inherited blood disorders caused by a genetic mutation in the hemoglobin-β gene located on chromosome 11.
    • This mutation results in defective hemoglobin, which forms rod-like structures after releasing oxygen.
    • As a result, red blood cells become rigid and assume a sickle shape.
    • The disease is inherited in an autosomal recessive pattern, meaning both parents must carry the abnormal gene for a child to inherit it.
    • Symptoms may not manifest immediately in newborns but can include extreme tiredness, fussiness, swollen hands and feet, and jaundice.
    • Implications:
        • The mis-shapen RBCs can block small blood vessels, leading to impaired blood flow and causing chronic anaemia.
        • Individuals with SCD often experience acute pain episodes, severe bacterial infections, and tissue damage due to inadequate blood supply.
    • Treatment:
      • Presently treatment includes medications for pain relief, regular blood transfusions to replace damaged red blood cells.
      • In rare cases, a bone marrow or stem cell transplant, which carries significant risks, is recommended.

    Eliminating Sickle Cell Disease: Global and National Context

    • This progress follows the approval of CRISPR-Cas9 technology by the U.S. Food and Drug Administration for a cell-based gene therapy to treat sickle cell disease in December 2023.
    • One of the main challenges for India is to develop a cost-effective therapy, as part of its mission to eradicate sickle cell disease by 2047, launched by Prime Minister in July 2023.
    • The mission aims to conduct over 7 crore screenings among vulnerable tribal populations across 17 States and Union Territories, with three crore screenings completed so far.

    Back2Basics: CRISPR-Cas9 Gene Editing

    • CRISPR-Cas9 stands for Clustered Regularly Interspaced Short Palindromic Repeats and CRISPR-associated protein 9.
    • It is a technology that allows geneticists and researchers to edit parts of the genome by altering sections of the DNA sequence.
    • Emmanuelle Charpentier and Jennifer Doudna’s work on CRISPR-Cas9 as a ‘molecular scissor’ earned them the 2020 Nobel Prize in chemistry.
    • The system consists of two key components:
    1. Cas9: This is the enzyme that acts like a pair of molecular scissors. It is responsible for cutting the DNA strand at a specific location, allowing for the removal, addition, or alteration of DNA at that site.
    2. Guide RNA (gRNA): This is a piece of RNA that is designed to find and bind to a specific sequence of DNA that matches its code. The gRNA guides the Cas9 enzyme to the exact spot in the genome where an edit is desired.
    • Mechanism:
      • The process begins with the design of a gRNA that matches the DNA sequence where an edit is needed.
      • Once inside the cell, the Cas9 enzyme and the gRNA form a complex that can identify and bind to the target DNA sequence.
      • The Cas9 then cuts the DNA at this location.
      • After the DNA is cut, the cell’s natural repair mechanisms can be harnessed to add or remove genetic material, or to make specific changes to the DNA.

     

    PYQ:

    [2023] Consider the following statements in the context interventions being undertaken under Anaemin Mukt Bharat Strategy :

    1. It provides prophylactic calcium supplementation for pre-school children, adolescents and pregnant women.
    2. It runs a campaign for delayed cord clamping at the time of child-birth.
    3. It provides for periodic deworming to children and adolescents.
    4. It addresses non-nutritional causes of anaemia in endemic pockets with special focus on malaria, hemoglobinopathies and fluorosis.

    How many of the statements given above are correct?

    (a) Only one
    (b) Only two
    (c) Only three
    (d) All four

  • How will AlphaFold 3 change life sciences research?

    Why in the News?

    AlphaFold 3, and AI System introduced in a May 2024 Nature paper, extends capabilities to predict protein-protein interactions, DNA, RNA structures, and their interactions.

    Importance of Proteins

    • Proteins are crucial molecules regulating nearly every biological function.
    • They are composed of amino acids, which determine their structure and function.
    • Understanding protein folding is essential for comprehending cellular and organismal functions.

    The Protein-Folding Problem

    • The process of protein folding is complex and not fully understood, known as the protein-folding problem.
    • It is vital for deciphering how cells, organisms, and life itself operate.
    • Frank Uhlmann emphasizes the significance of understanding protein structure for molecular biology.

    What is AlphaFold?

    • Google DeepMind’s AlphaFold debuted in 2020, employs AI and machine learning to predict protein structures.
    • AlphaFold 2, released in 2021, significantly improved accuracy in protein structure prediction.
    • Derek Lowe acknowledges AlphaFold’s achievement in predicting structures effectively, although the deeper biological principles remain less explored.
    • AlphaFold 3’s Advancements:
      • It democratizes research by offering accessible structure prediction tools, even for non-experts.

    Technology behind AlphaFold 3

    • Unlike its predecessors, AlphaFold 3 utilizes a diffusion model akin to image-generating software.
    • This approach involves training on noisy data and de-noising to predict accurate protein structures.
    • Working:
      • Given an input list of molecules, AlphaFold 3 generates their joint 3D structure, revealing how they all fit together.
      • It models large biomolecules such as proteins, DNA and RNA, as well as small molecules, also known as ligands — a category encompassing many drugs.

    Applications of AlphaFold 3

    • AlphaFold 3 excels in predicting protein structures and interactions, aiding drug discovery efforts.
    • DeepMind’s spin-off, Isomorphic Labs, utilizes AlphaFold 3 for drug candidate identification.

    Challenges

    • The model’s code restriction has sparked criticism among researchers for hindering scientific collaboration and transparency.
    • DeepMind initially withheld AlphaFold 3’s full code, prompting calls for open access from the scientific community.
    • Responding to backlash, DeepMind plans to release the complete code within six months.

    PYQ:

    [2020] With the present state of development, Artificial Intelligence can effectively do which of the following?

    1. Bring down electricity consumption in industrial units
    2. Create meaningful short stories and songs
    3. Disease diagnosis
    4. Text-to-Speech Conversion
    5. Wireless transmission of electrical energy

    Select the correct answer using the code given below:

    (a) 1, 2, 3 and 5 only

    (b) 1, 3 and 4 only

    (c) 2, 4 and 5 only

    (d) 1, 2, 3, 4 and 5

  • Does H5N1 pose a threat for humans? | Explained

    Why in the news?

    The highly pathogenic avian influenza (HPAI) H5N1’s spread to cattle and first human cases in U.S. dairy workers heighten fears of wider human transmission.

    Can the highly pathogenic avian influenza H5N1 strain spread from cattle to humans?

    • Recent Infections: Three cases of human infection in dairy farm workers were reported in the U.S., indicating the potential for the virus to spread from cattle to humans.
    • Transmission: The virus appears to spread to humans who are in close interaction with infected birds or animals without adequate personal protection.
    • Current Risk Level: Scientists note that the virus currently lacks changes that would make it better adapted to human-to-human transmission, keeping the risk to human health low. However, the potential for the virus to rapidly evolve remains a concern.

    What is the strategy to identify and contain the spread of the virus?

    • Surveillance in Kerala: Kerala has implemented a community-based disease surveillance network involving 2.5 lakh volunteers trained in the ‘One Health’ concept across four districts: Alappuzha, Pathanamthitta, Kottayam, and Idukki.
    • Early Warning System: These volunteers report any unusual events or deaths of animals/birds in their locality, allowing for early warning and prompt preventive or control measures.
    • Global Coordination: There is a call for a robust and coordinated response to H5N1, as emphasized in a recent editorial by The Lancet.

    What is the concept of ‘One Health’ 

    • ‘One Health’ Concept: ‘One Health’ is an approach that recognizes the interconnection between people, animals, plants, and their shared environment, emphasizing the need for collaborative efforts across different sectors to achieve optimal health outcomes.

    How is Kerala using it to limit the spread of avian influenza?

    • Implementation of the ‘One Health’ concept in Kerala: Kerala has operationalized the ‘One Health’ concept through the World Bank-aided ‘Rebuild Kerala’ project. This involves a community-based disease surveillance network where volunteers are trained to monitor and report on animal and bird health, ensuring early detection and response to potential outbreaks.
    • Other Operational Measures: The state has taken proactive steps beyond the conceptual framework of ‘One Health’ by establishing an on-ground, volunteer-driven network for disease monitoring and control.

    Way forward:

    • Strengthen Global Surveillance and Collaboration: Enhance international cooperation for surveillance, data sharing, and rapid response mechanisms to monitor and control the spread of H5N1, leveraging the ‘One Health’ approach for coordinated action across human, animal, and environmental health sectors.
    • Implement Rigorous Biosecurity and Safety Protocols: Ensure strict biosecurity measures and personal protective equipment (PPE) for workers in close contact with animals, particularly in high-risk areas, to prevent zoonotic transmission and reduce the potential for human infections.

    Mains PYQ: 

    Q The public health system has limitations in providing universal health coverage. Do you think that the private sector can help in bridging the gap? What other viable alternatives do you suggest? (UPSC IAS/2015)

  • Valentina Tereshkova: The First Woman in Space

    Why in the News?

    On June 16, 1963, Valentina Tereshkova made history as the first woman to venture into space. Her achievement marked a significant milestone in the Space Race between the USA and the USSR during the Cold War.

    About Valentina Tereshkova’s Space Journey

    • In 1962, Tereshkova was selected among five women for the Soviet space program, aiming to achieve ‘gender equality’ in space exploration.
    • The USSR’s decision to send a woman into space was partly influenced by the success of Yuri Gagarin’s mission in 1961 and the desire to surpass the US in space achievements.
    • Tereshkova’s affiliation with the Communist Party and her skills as a parachutist were factors in her selection for the Vostok 6 mission.

    The Mission – Vostok 6

    • On June 16, 1963, Tereshkova piloted Vostok 6, becoming the first woman to orbit the Earth.
    • She spent 71 hours in space, completing 48 orbits around the Earth during her mission.

    Impact and Legacy

    • Tereshkova’s mission boosted Soviet prestige in the Space Race, following earlier successes like launching Sputnik-1 in 1957 and Yuri Gagarin’s historic flight in 1961.
    • Despite her pioneering role, the USA would later achieve milestones like the Apollo moon landings, surpassing Soviet achievements in manned space missions.
    • Tereshkova continued to advocate for women’s participation in space exploration and held prominent positions in Soviet politics and the Air Force.

    Indian Women in Space 

    Indian women have made significant contributions to space exploration, marking milestones and inspiring future generations. Here are notable Indian women who have ventured into space:

    • Kalpana Chawla: Born in Karnal, Haryana, Kalpana Chawla was the first woman of Indian origin in space. She flew on two Space Shuttle missions, including STS-87 in 1997. Tragically, she lost her life during the re-entry of the Space Shuttle Columbia in 2003.
    • Sunita Williams: An American astronaut of Indian-Slovenian descent, Sunita Williams has set records for spacewalks and served as a flight engineer on the International Space Station (ISS). She has logged over 322 days in space across multiple missions.
    • Sirisha Bandla: An aeronautical engineer and Vice President at Virgin Galactic, Sirisha Bandla became the second India-born woman to travel to space on the Virgin Galactic Unity 22 mission in 2021.

    Women Pioneers of ISRO:

    • Lalitha Ramachandran: Joined ISRO in 1969 as a technical assistant at Vikram Sarabhai Space Centre (VSSC), becoming one of the first female chemical engineers recruited by ISRO. She retired as associate project director of the Cryogenic Upper Stage Project.
    • J Geetha: Joined ISRO in 1972 after working at Bhabha Atomic Research Centre. She reminisces about the challenges of data gathering in the pre-internet era and the mentorship she received from stalwarts like Satish Dhawan and Vasant R Gowarikar.
    • Radhika Ramachandran: Joined ISRO in 1984 and served in various roles, including technical liaison officer at ISRO’s New Delhi office and director of the Space Physics Laboratory. She highlights the merit-based culture and the support for open discussions and suggestions.
    • T S Ramadevi: Joined ISRO in 1970 after completing her BTech from CET, Thiruvananthapuram. She was part of the communications unit and contributed to the growth of ISRO’s transmission technologies. She retired as deputy director of management systems.
    • Athula Devi: Joined ISRO in 1987 and retired in January, having been part of the team that developed base software systems for the Gaganyaan launch. She emphasizes ISRO’s growth through failures and the team’s dedication to projects above personal recognition.

     

    PYQ:

    [2017] India has achieved remarkable successes in unmanned space missions including the Chandrayaan and Mars Orbiter Mission, but has not ventured into manned space missions. What are the main obstacles to launching a manned space mission, both in terms of technology and logistics? Examine critically. (10)

  • Quantum Physics Behind Diapers: How they absorb so much Liquid?

    Why in the News?

    Understanding the absorbency of diapers through the Quantum physics of water absorption and contrasting materials that do or do not absorb water.

    Absorption in Diapers: How it works?

    • Absorption depends on Microscopic forces and Material properties. Water molecules are attracted to materials like cotton due to their structure.
    • Cotton, a network of polymers with ions, absorbs water effectively by attracting water molecules.
    • For large fluid absorption like in diapers, Super-Absorbent Polymers (SAP) are crucial.

    What are Super-Absorbent Polymers (SAP)?

    • SAPs are synthetic materials with the ability to absorb and retain large amounts of liquid relative to their own mass.
    • They are commonly used in products like diapers, sanitary napkins, and other absorbent hygiene products.
    • SAPs are typically cross-linked polymers, meaning their molecules are bonded in a way that creates a network capable of absorbing water molecules.

    Examples:

    1. Sodium Polyacrylate: This is one of the most common types of SAP used in diapers. It forms a gel-like substance when it absorbs liquid.
    2. Polyacrylamide: Another type of SAP used in various applications, including agriculture and wastewater treatment, due to its high water-absorbing capacity.

    Quantum Physics Insight of SAP

    Quantum physics plays a fundamental role in understanding the behaviour of super-absorbent polymers (SAPs), particularly in how they interact with water molecules at the atomic level:

    1. Electron Sharing: SAPs contain ions like sodium, which have a strong affinity for water molecules. This attraction is based on the principles of quantum physics, where atoms like sodium and oxygen prefer to share electrons to achieve stability. This shared electron arrangement allows water molecules to bond with the ions in SAPs, facilitating the absorption process.
    2. Quantum Mechanical Properties: At the quantum level, electrons behave as waves and can exist in shared states between atoms. This phenomenon allows for the formation of stable bonds between water molecules and SAP ions, enhancing the SAP’s ability to absorb large amounts of liquid.
    3. Energy States: Quantum physics explains how SAPs manage energy states during absorption. As water enters the SAP, energy is released due to changes in the electron configurations and bonding energies of the ions involved. This process is crucial for maintaining the gel-like structure of the SAP and preventing leakage.

    PYQ:

    [2022] Which one of the following is the context in which the term “qubit” is mentioned?

    (a) Cloud Services

    (b) Quantum Computing

    (c) Visible Light Communication Technologies

    (d) Wireless Communication Technologies

  • What is an Electromagnet?

    PC: The Hindu

    Why in the News?

    Recently Scientists have designed a magnetic resonance imaging (MRI) scanner that costs a fraction of existing machines, setting the stage for improving access to this widely used diagnostic tool. So we need to know about the Electromagnet.

    What is an Electromagnet?

    • Invented in 1824 by William Sturgeon, electromagnets revolutionised technology.
    • Sturgeon was an English physicist and inventor who discovered that wrapping a coil of wire around a piece of iron and passing an electric current through the wire produced a magnetic field.
    • Electromagnets are used in Loudspeakers for sound reproduction, Motors for mechanical movement., and MRI machines for medical imaging, etc

    How Electromagnets Work?

    • Electric current flowing through a wire generates a magnetic field around the wire.
    • Coiling the wire enhances this magnetic field by concentrating it within the coil’s core.
    • This configuration creates an electromagnet, where the strength of the magnetic field is directly proportional to the current flowing through the coil.
    • The magnetic flux density so generated is measured in ‘Tesla’.

    Enhancing Magnetic Strength with a Core

    • Coiling the wire around a magnetic material (core), such as iron or steel:
      • Amplifies the magnetic field produced by the electric current.
      • Ferromagnetic materials like iron align their internal magnetic domains with the external magnetic field generated by the coil.
      • This alignment significantly increases the overall magnetic strength of the electromagnet compared to a non-magnetic core.

    Persistence of Magnetization

    • It refers to the property of a material to retain a certain amount of magnetization even after the removal of an external magnetic field.
    • Certain core materials exhibit retained magnetization even after the current ceases.
    • This residual magnetism is useful in applications requiring sustained magnetic fields, such as:
      • Superconducting electromagnets used in MRI machines, are capable of producing magnetic fields up to 30 Tesla.
      • Research electromagnets like those used in particle physics, which require stable and powerful magnetic fields.

    Who was Michael Faraday (1791-1867)?

    • Michael Faraday was a pioneering English scientist and physicist who made substantial contributions to the fields of electromagnetism and electrochemistry.
    • Faraday is best known for his experiments and discoveries in electromagnetism, which laid the groundwork for the principles of electromagnetic induction and the laws of electrolysis.

    Key achievements of Michael Faraday include:

    1. Electromagnetic Induction: He discovered electromagnetic induction in 1831, showing that a changing magnetic field induces an electric current in a nearby conductor.
    2. Electrochemistry: Faraday formulated the laws of electrolysis, which describe the quantitative relationship between the amount of material produced or consumed during electrolysis and the amount of electricity passed through the electrolyte.
    3. Faraday’s Laws of Electromagnetic Induction: These laws describe the fundamental principles of generating electricity using magnetic fields, forming the basis for the development of electric generators and transformers.
    4. Faraday Cage: He invented the Faraday cage, a device used to block electromagnetic fields.

     

    PYQ:

    [2011] Microbial fuel cells are considered a source of sustainable energy. Why?

    1. They use living organisms as catalysts to generate electricity from certain substrates.
    2. They use a variety of inorganic materials as substrates.
    3. They can be installed in wastewater treatment plants to cleanse water and produce electricity.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

  • Kavli Prize, 2024 Announced

    Why in the News? 

    The winners of the 2024 Kavli Prize were announced, recognising achievements in astrophysics, neuroscience, and nanoscience.

    About Kavli Prize

    • The Kavli Prize celebrates outstanding achievements in astrophysics, neuroscience, and nanoscience.
    • It is established in honour of Norwegian-American businessman and philanthropist Fred Kavli (1927-2013).
    • Awarded biennially, the prize recognizes researchers whose work pushes the boundaries of human knowledge and enhances our understanding of the universe, the brain, and nanoscale phenomena.

    About Fred Kavli

    • Fred Kavli, born in Erejsford, Norway, immigrated to California in 1956 and quickly made a mark in the engineering field.
    • His entrepreneurial journey began in 1958 with the founding of Kavlico, a pioneering company known for its precision pressure sensors used across diverse industries, from aviation to consumer electronics.

    The Kavli Foundation:

    • In 2000, after selling Kavlico for $340 million, Fred Kavli established the Kavli Foundation.
    • This philanthropic organisation supports fundamental research aimed at improving global quality of life.
    • The foundation operates 20 institutes worldwide dedicated to astrophysics, neuroscience, nanoscience, and theoretical physics.

    Prize Structure and Prestige:

    1. Comparison with Nobel Prize: The Kavli Prize mirrors the Nobel Prize in its prestige and international recognition but differs by not limiting awards to achievements within the preceding year, allowing broader scope and longevity in selection criteria.
    2. Award Ceremony: Each Kavli Prize includes a $1 million cash award per field, a scroll, and a 7 cm diameter medal. The ceremony, held at the Oslo Concert Hall and attended by global scientific leaders, features a red-carpet event, emphasizing its significance in the scientific community.
    3. Selection Process:
    • Committees: Three international committees nominate and review candidates, providing a unanimous recommendation to the Norwegian Academy of Science and Letters.
    • Nominees: Nominees come from prestigious institutions worldwide, ensuring a diverse and comprehensive evaluation process.

    Winners of the 2024 Kavli Prize:

    Field Winners Contributions
    Astrophysics David Charbonneau (Harvard University), Sara Seager (Massachusetts Institute of Technology) Pioneering methods for detecting atomic species in planetary atmospheres and measuring their thermal infrared emission, are crucial for identifying molecular fingerprints in atmospheres of exoplanets.
    Nanoscience Robert Langer (MIT), Armand Paul Alivisatos (University of Chicago), Chad Mirkin (Northwestern University) Langer: Nano-engineering for controlled drug delivery systems.

    Alivisatos: Development of semiconductor quantum dots for bio-imaging.

    Mirkin: Concept of spherical nucleic acids (SNAs) for applications in gene regulation and immunotherapy.
    Neuroscience Nancy Kanwisher (MIT), Winrich Freiwald (Rockefeller University), Doris Tsao (University of California, Berkeley) Mapping brain functions related to facial recognition using neuroimaging and neuronal recording techniques, identifying brain centers and neural architectures involved in face processing.

     

    PYQ:

    [2021] The Nobel Prize in Physics of 2014 was jointly awarded to Akasaki, Amano and Nakamura for the invention of Blue LEDs in the 1990s. How has this invention impacted the everyday life of human beings?

    [2018] Discuss the work of ‘Bose-Einstein Statistics’ done by Prof. Satyendra Nath Bose and show how it revolutionized the field of Physics.

    [2008] Nobel Prize-winning scientist James D. Watson is known for his work in which area? (2008)

    (a) Metallurgy

    (b) Meteorology

    (c) Environmental protection

    (d) Genetics