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The social sciences, a shelter for the ‘excluded’ student

Note4Students

From UPSC perspective, the following things are important :

Mains level: Causes of Exclusion in Higher Education

Why in the news?

Persistent exclusion results in some disciplines becoming a last resort for many students with social sciences increasingly becoming a significant reservoir of the excluded in India.

Causes of Exclusion in Higher Education:

  • Excessive Competition: Premier institutions have stringent filtering mechanisms due to high demand, which results in significant exclusion of students.
  • Financial Factors: Private institutions often have high fees not regulated by statutory norms, and public institutions, facing reduced government funding, also increase fees, making education inaccessible for many.
  • Subject and Course Availability: There is a regional disparity in the availability of courses. Certain regions offer generic courses with outdated syllabi, limiting students’ choices and leading to exclusion.

Surge of Empirical Orientation:

  • Employability Perception: Courses with empirical and practical applications, like economics, are perceived to offer better employment opportunities compared to more theoretical courses like anthropology or sociology.
  • Policy Intervention Skills: There is a growing expectation for social science students to develop problem-solving skills similar to those of engineering students, which narrows the focus within social sciences.
  • Private Universities: The emergence of private universities catering to the affluent has led to a demand for courses that are less popular in public institutions, creating a dichotomy in course preference and quality.

Improving Quality of Higher Education:

  • Expand Quantity and Improve Quality: Increase the number of seats to accommodate excluded students and ensure concerted efforts towards enhancing the quality of education like entry based on competitive exams.
  • Enhance Teaching Quality: Prioritize the improvement of teaching methods and the content of courses to make education more relevant and effective for example reviewing and taking feedback on learning experiences from students.
  • Address Financial Exclusion: Implement measures to reduce financial barriers and prevent the widening of educational inequalities, ensuring that quality education is accessible to a broader demographic. For example, the Government can provide loans or scholarships.
  • Update Course Content: Regularly revise and update the syllabi to keep pace with societal changes and technological advancements, such as generative artificial intelligence.
  • Focus on Inclusivity: Ensure that policies and interventions in higher education focus on inclusivity, addressing the needs of diverse student populations and reducing regional disparities in course offerings.

Steps taken by Government 

  • All India Council for Technical Education (AICTE) Initiatives: The AICTE has undertaken various initiatives to enhance the quality of technical education, such as the establishment of Deen Dayal Upadhyay KAUSHAL Kendras and the introduction of B.Voc degree programs.
  • University Grants Commission (UGC) Regulations: The UGC has notified regulations to improve the quality of higher education, including those related to recognition, accreditation, minimum qualifications for teachers, curbing ragging, and grievance redressal.
  • Scholarship and Fellowship Schemes: The UGC has launched various scholarship and fellowship schemes, such as the PG Doctoral Fellowship for SC/ST students, to promote inclusion and equity in higher education.

Conclusion: Efforts to enhance higher education, including expanding access, improving quality, and addressing financial barriers, are crucial for fostering inclusivity and equipping students for India’s future.

Mains PYQ:

Q The quality of higher education in India requires major improvement to make it internationally competitive. Do you think that the entry of foreign educational institutions would help improve the quality of technical and higher education in the country Discuss. (UPSC IAS/2015)

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Police Reforms – SC directives, NPC, other committees reports

Arrest, agencies, and criminal courts

Note4Students

From UPSC perspective, the following things are important :

Mains level: Grounds of Arrest

Why in the news?

In May 2024, the Supreme Court clearly stated its stance in two important rulings that affect the rights of individuals accused of crimes.

About Supreme Court’s Decision on Detention:

  • Custody Not Necessary Before Charge Sheet: The Supreme Court ruled that the custody of an accused is not mandatory before filing a charge sheet in certain criminal cases.
  • Relief for Investigating Agencies: This decision, if adhered to by lower courts, could alleviate pressures on investigating agencies.

Filing of Charge Sheet:Siddharth v. State of Uttar Pradesh and Another (2021)

  • Non-obligatory Arrest: Section 170 of the CrPC does not require investigating officers (IOs) to arrest every accused at the time of filing the charge sheet.
  • Acceptance of Charge Sheet: Courts cannot refuse to accept charge sheets solely because the accused is not in custody if the accused has been cooperating and is unlikely to abscond.
  • Practical Issues: Despite the ruling, IOs face challenges in filing charge sheets due to court practices and logistical constraints, such as the absence of all accused or arbitrary limits on the number of charge sheets accepted daily.

Grounds of Arrest:

1.  Pankaj Bansal v. Union of India and Others (2023):

  • Written Notification Required: Grounds of arrest must be provided in writing to the accused to comply with constitutional and statutory mandates, specifically under Section 19(1) of the PMLA.

2. Prabir Purkayastha v. State (NCT of Delhi):

  • Application to UAPA: The requirement for written grounds of arrest under PMLA applies equally under UAPA.
  • Formal vs. Personal Grounds: Differentiates between formal reasons for arrest and personal grounds, necessitating detailed written reasons for arrest.

3. Criminal Procedure Code (CrPC):

  • Section 50(1) Compliance: Requires that every police officer inform the arrested person of the full particulars of the offence and grounds of arrest.
  • Arrest Memo: While arrest memos detail charges and are signed by the IO and the accused, there is no legal requirement to provide a copy to the accused.
  • Recommendation for Amendment: To comply with constitutional rights, it is suggested to amend the law to provide a copy of the arrest memo to the accused, enhancing transparency and legal support.

Conclusion: The Supreme Court’s decisions regarding the necessity of detention before charge sheet filing and the requirements for informing an accused of the grounds of arrest, highlight the implications for legal and procedural practices in India.

 

Mains PYQ:

Q Human right activists constantly highlight the fact that the Armed forces (Special Powers) Act, 1958 (AFSPA) is a draconian act leading to cases of human right abuses by security forces. What sections of AFSPA are opposed by the activists. Critically evaluate the requirement with reference to the view held by Apex Court.  (UPSC IAS/2015)

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Special Category Status and States

Bihar’s call for Special Category Status | Explained

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Specific criteria qualify a State for special category status

Mains level: Special category status benefits to States like Bihar

Why in the News?

Bihar Chief Minister Nitish Kumar has renewed the State’s persistent call for special category status from the Centre, which would boost the State’s share of tax revenues from the Central government.

How does the ‘Special Category’ Status benefit the states like Bihar?

  • Increased Central Funds: States with special category status receive a higher share of central funds for government schemes, typically 90% from the Centre, compared to 60%-80% for other states.
  • Tax-Related Concessions: These states enjoy various tax concessions that can attract investments and boost economic development.
  • Financial Aid for Development: The additional funds can be used to address developmental gaps, improve infrastructure, and support welfare programs.

Criteria for Special Category status:

  • Geographic Disadvantages: States with challenging terrains such as hilly or difficult terrain.
  • Low Population Density or High Tribal Population: States with a considerable proportion of tribal population or low population density.
  • Economic and Social Backwardness: States that are economically and socially disadvantaged.
  • Strategic Location: States that share international borders or have strategic significance.

Why has Bihar’s demand been a long-standing issue?

  • Economic Backwardness: Bihar has one of the lowest per capita incomes in India and lags behind in several human development indicators.
  • Fiscal Challenges: The bifurcation of the state leading to the formation of Jharkhand, frequent natural disasters, and insufficient water resources for irrigation have adversely affected Bihar’s fiscal situation.
  • Political Reiteration: Successive Bihar governments have continuously demanded special status to help the state’s development.

What are the political implications of granting ‘Special Status’ to Bihar?

  • Increased Bargaining Power: Granting special status could enhance Bihar’s political leverage with the central government, especially in coalition politics.
  • Precedent for Other States: Granting special status to Bihar could lead to similar demands from other states, potentially creating financial burdens for the Centre.
  • Electoral Promises and Alliances: Political parties may use the promise of special status as an electoral tool to gain or maintain power, as seen with the Congress party’s manifesto promise in 2024.
  • Centre-State Relations: The decision could impact the dynamics of center-state financial relations and influence the federal structure of revenue distribution in India.

Conclusion: The Central government should establish a transparent and well-defined framework for granting special category status, taking into account various economic, geographic, and social parameters. This framework should be periodically reviewed to ensure it remains relevant and fair to all states.

Mains PYQ: 

Q To what extent is Article 370 of the Indian Constitution, bearing marginal note “Temporary provision with respect to the State of Jammu and Kashmir”, temporary? Discuss the future prospects of this provision in the context of Indian polity. (UPSC IAS/2016)

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Foreign Policy Watch: India – EU

Expert Explains: What European Parliament election results signify, with the rise of right-wing parties?

Note4Students

From UPSC perspective, the following things are important :

Mains level: Impacts of election result

Why in the News?

The outcomes of the June 6-9 European Parliament elections, where approximately 51% of over 370 million eligible voters across 27 EU nations participated, indicated an increase in support for right-wing and far-right parties, resulting in losses for predominantly left-leaning and liberal parties.

What is the European Parliament?

  • The European Parliament is one of the core institutions of the European Union (EU), where Members of the European Parliament (MEPs) are directly elected by citizens of the 27 member states.
  • It provides democratic legitimacy to EU activities and consists of 720 seats allocated based on degressive proportionality, meaning smaller states elect more MEPs than their populations would warrant.

Functions of the European Parliament:

  • The Parliament has three main functions: adopting and amending EU legislation along with the Council of the EU, supervising the functioning of other EU institutions (especially the European Commission), and sharing authority over the EU budget with the Council.
  • It also ratifies international agreements and plays a crucial role in shaping the EU’s direction on various issues such as climate change, migration, and international relations.

Major Players in the New European Parliament:

  • MEPs are affiliated with Europe-wide political groups based on commonalities in ideology. Major groups include the European People’s Party (EPP), Progressive Alliance of Socialists and Democrats (S&D), Renew Europe, Greens/European Free Alliance (Greens/EFA), European Conservatives and Reformists (ECR), Identity and Democracy (ID), and the Left Group (GUE/NGL).
  • The EPP and S&D have traditionally been the two major groups, but the Parliament has become more fragmented over time, leading to issue-based coalitions.
  • In the latest elections, the EPP emerged as the largest group, but right-wing and far-right parties made significant gains.

Impact on EU’s Position on Hot-Button Issues like Immigration:

  • The European Parliament reflects broader political trends across Europe, with right-wing parties gaining traction from issues such as increased immigration, national identity, and scepticism towards certain EU policies.
  • This shift towards the Right has pressured many centre-right parties to adopt harder positions on immigration, likely leading to increased support for tighter border controls and stricter immigration and asylum rules.

Impacts of election result:

  • The election results may influence the EU’s direction on key issues like climate change, migration, and international relations.
  • The rise of right-wing and far-right parties could lead to shifts in policy priorities and a more conservative stance on certain issues.
  • In national politics, the results may impact the stability of governments and the position of leaders like Emmanuel Macron, who called for snap polls in response to his party’s poor performance in the European elections.

Conclusion: The European Parliament election results signal a rise in right-wing parties, impacting EU policies on immigration and other key issues. National politics may also face repercussions, affecting leadership stability.

Mains PYQ:

Q Critically examine the procedures through which the Presidents of India and France are elected.(UPSC IAS/2022)

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Parliament – Sessions, Procedures, Motions, Committees etc

What are the functions of Cabinet Ministers and Ministers of State?

Note4Students

From UPSC perspective, the following things are important :

Prelims level: India’s ministerial portfolio system and its features

Why in the News?

  • President Droupadi Murmu administered oaths to the Central Council of Ministers (CoM) of the new NDA government, comprising a larger team compared to the previous term.
    • The Council includes 30 cabinet ministers, five Ministers of State (Independent Charge), and 36 Ministers of State, with the Prime Minister leading the team.

About Central Council of Ministers

  • The Central CoM is a crucial part of India’s governance system.
  • Members: It consists of the Prime Minister (Head), Cabinet Ministers, Ministers of State, and Deputy Ministers.
  • History:
    • Portfolio System: The system of the CoM finds its roots in the Indian Councils Act of 1861, introduced by Lord Canning going parallel with the British Parliamentary System.

Constitutional Provisions

Articles 74 to 78 in Part V of the Indian Constitution broadly deal with the Central Council of Ministers.

Union Executive: The Union Executive encompasses the President, Vice-President, Prime Minister, Union Council of Ministers, and Attorney General of India, collectively responsible for the country’s administration.

Role of the Prime Minister

  • The Prime Minister is the head of the Central Council of Ministers, exercising executive authority and decision-making powers on key policy issues and unallocated portfolios.
  • Responsibilities: Prime Minister Modi oversees critical ministries such as Personnel, Public Grievances, Pensions, Department of Atomic Energy, and Department of Space, while also leading government bodies like the Cabinet Secretariat and NITI Aayog.

Functions and Duties of CoM

1. Policy Formulation and Implementation:

  • Formulating Policies: The Council of Ministers, particularly the Cabinet, is tasked with formulating policies crucial for the nation’s development and welfare.
  • Policy Coordination: It ensures coordination among various government departments and agencies for effective policy implementation.

2. Executive Functions:

  • Real Executive Authority: The Council of Ministers acts as the real executive authority, exercising executive powers on behalf of the President.
  • Administration: It oversees the day-to-day administration of the country, ensuring the smooth functioning of government affairs.
  • Emergency Powers: During emergencies, the Council of Ministers advises the President on the exercise of emergency powers and crisis management.

3. Legislative Functions:

  • Bills and Legislation: Ministers actively participate in the legislative process by introducing bills, piloting them through Parliament, and ensuring their passage.
  • Policy Advocacy: They advocate for government policies and bills in Parliament, engaging in debates and discussions to garner support.
  • Budgetary Process: The Council of Ministers prepares and presents the annual budget, guiding fiscal policies and financial allocations.

4. Financial Management:

  • Budget Preparation: It plays a significant role in preparing the national budget, and outlining revenue and expenditure plans for the fiscal year.
  • Financial Administration: The Council oversees financial administration, ensuring compliance with budgetary provisions and efficient resource utilization.
  • Taxation and Fiscal Policy: Ministers propose taxation measures and formulate fiscal policies to promote economic growth and stability.

Who are the Cabinet Ministers?

  • The Cabinet Ministers are senior members of the Central Council of Ministers who head key government departments or ministries.
  • Typically, Cabinet Ministers are appointed by the Prime Minister and are part of the Cabinet, which is the core decision-making body in the government.
  • Each Cabinet Minister typically manages a specific portfolio aligned with the government’s priorities and responsibilities.
    • Examples: Minister of Finance, Minister of Home Affairs, Minister of Defence, Minister of External Affairs, Minister of Health, Minister of Education, and others.
  • The term ‘Cabinet’ was inserted in Art. 352 of the Constitution by the 44th Amendment Act 1978.
  • It did not find a place in the original text of the Constitution.

Difference between Ministers of State (Independent Charge) and Ministers of State:

Ministers of State (Independent Charge) Ministers of State
Authority Have independent portfolios Assist Cabinet Ministers
Reporting Structure Directly report to PM/President Report to and assist Cabinet Ministers
Accountability Fully responsible for their departments Assist Cabinet Ministers in tasks
Protocol Status Equivalent to Cabinet Ministers in status Lower protocol status
Attendance in Cabinet Meetings May attend if their portfolios are discussed Not regular attendees

 

PYQ:

[2013] Consider the following statements:

  1. The Council of Ministers in the Centre shall be collectively responsible to the Parliament.
  2. The Union Ministers shall hold the office at the pleasure of the President of India.
  3. The Prime Minister shall communicate to the President about the proposals for legislation.

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

[2007] Assertion (A): The Council of Ministers in the Union of India is collectively responsible both to the Lok Sabha and Rajya Sabha.

Reason (R): The Members of both the Lok Sabha and the Rajya Sabha are eligible to be the Ministers of the Union Government.

Choose the correct Code:

(a) Both A are R are true and R is the correct explanation of A

(b) Both A and R are true but R is not a correct explanation of A

(c) A is true but R is false

(d) A is false but R is true

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Promoting Science and Technology – Missions,Policies & Schemes

2025 to be International Year of Quantum Science and Technology

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Quantum Theory and related Researches, National Quantum Mission (NQM)

Why in the News?

  • The United Nations has designated 2025 as the ‘International Year of Quantum Science and Technology’ to increase public awareness about the significance of quantum science and its applications.
    • This initiative, led by Mexico and supported by nearly 60 countries, aims to promote activities at all levels to highlight the importance of quantum science and technology worldwide.

International Year of Quantum S&T

  • Growing Relevance: Quantum science and technologies, especially quantum computing, have gained prominence in public discourse due to their potential transformative impact on various fields.
  • Anniversary of Heisenberg’s Work: The proclamation coincides with the upcoming centenary of Werner Heisenberg’s groundbreaking paper on quantum mechanics, published in 1925.
  • Support from International Bodies: The proclamation has received endorsements from various international organisations, including the International Union of Pure and Applied Physics and the International Union of Pure and Applied Chemistry.

What does one mean by Quantum?

  • “Quantum” refers to the smallest discrete unit of any physical quantity involved in an interaction according to quantum theory.
  • In classical physics, many properties, such as energy and momentum, are thought to be continuous and infinitely divisible.
  • However, in quantum mechanics, certain properties, like energy levels and the behaviour of particles, are quantised, meaning they can only exist in specific discrete amounts or levels.

What is Quantum Theory?

  • Quantum theory is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.
  • Quantum mechanics differs from classical physics in that energy, momentum, and angular momentum.

Development in Quantum Theory So Far

  • Planck’s assumption: In 1900, Planck made the assumption that energy was made of individual units or quanta.
  • Albert Einstein’s theory: In 1905, Albert Einstein theorized that not just the energy, but the radiation itself was quantized in the same manner.
  • Louis de Broglie theory: In 1924, Louis de Broglie proposed that there is no fundamental difference in the makeup and behaviour of energy and matter; on the atomic and subatomic level either may behave as if made of either particles or waves. This theory became known as the principle of wave-particle duality: elementary particles of both energy and matter behave, depending on the conditions, like either particles or waves (wave-particle duality).
  • Heisenberg proposed: In 1927, Werner Heisenberg proposed that precise, simultaneous measurement of two complementary values – such as the position and momentum of a subatomic particle – is impossible. Contrary to the principles of classical physics, their simultaneous measurement is inescapably flawed; the more precisely one value is measured, the more flawed will be the measurement of the other value. This theory became known as the uncertainty principle, which prompted Albert Einstein’s famous comment, “God does not play dice.”

What is Entanglement?

  • Entanglement was another of several weird properties exhibited by these tiny particles.
  • Two particles, having ‘interacted’ with each other at some stage, were found to have got ‘entangled’ in a way that the behaviour of one produced an instantaneous reaction in the other even if the two were no longer connected in any way and were separated by very large distances.
  • The entanglement property opened up new technological possibilities first time that it was possible to ‘teleport’ the quantum states of a particle to another location without the particle moving anywhere and without a medium.

What is Superposition?

  • It’s a phenomenon where, a particle exists simultaneously at multiple locations, known as superposition.
  • The chance of finding the particle at any given place was dictated by probabilistic calculations, and once it was found, or observed, at one location, it ceased to exist at all other places.

What is Quantum Computing?

  • Quantum computing is a new and super powerful way of doing computer stuff.
  • Instead of using regular computer bits that are either 0 or 1, quantum computers use special bits called qubits that can be both 0 and 1 at the same time, thanks to a thing called “quantum superposition.”
  • This allows them to do lots of calculations all at once, making them really fast at solving certain types of problems.

Back2Basics: National Quantum Mission (NQM)

Details
Mission Duration 2023-2031
Implementing Authority Department of Science and Technology (DST) under the Ministry of Science & Technology
India’s Position Seventh country to have a dedicated quantum mission after the US, Austria, Finland, France, Canada, and China
Focus Areas
  • Intermediate-scale quantum computers with 50-100 physical qubits in 5 years and 50-1000 physical qubits in 8 years
  • Quantum computation, Quantum communication, Quantum Sensing & Metrology, Quantum Materials & Devices
Development
  • High-sensitivity magnetometers for precision timing, communications, and navigation
  • Satellite-based secure quantum communications within India and with other countries
  • Design and synthesis of quantum materials like superconductors, novel semiconductor structures, and topological materials
Thematic Hubs Establishment Four Thematic Hubs (T-Hubs) would be set up in top academic and National R&D institutes on the domains of Quantum Technology:

  1. Quantum computation
  2. Quantum communication
  3. Quantum Sensing & Metrology
  4. Quantum Materials & Devices

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

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International Space Agencies – Missions and Discoveries

How SpaceX’s Starship can revolutionise space travel and exploration?

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Starship space vehicle and its features

Why in the News?

  • SpaceX’s Starship rocket completed its first fully successful test flight. This test flight brings SpaceX closer to its goal of creating a fully reusable rocket system, a development that could revolutionize space exploration and travel.

What is Starship?

  • Starship is a two-stage heavy lift-off vehicle designed for crew and cargo transport to Earth orbit, the Moon, Mars, and beyond.
  • It stands nearly 120 meters tall, surpassing the Saturn V rocket.
  • The Super Heavy booster is powered by 33 Raptor engines, generating significant thrust, surpassing existing rocket systems like NASA’s Space Launch System (SLS).
  • Raptor engine fuel uses a mix of liquid oxygen and liquid methane, enabling efficient propulsion for the rocket.

Cost Reduction and Efficiency with Starship

  • Starship can carry up to 150 tonnes of payload to low-Earth orbit.
  • It can be refuelled in space, thereby promising a significant reduction in the cost of space travel.
  • In-orbit refuelling allows Starship to operate like an aeroplane, reducing downtime between missions and maximizing efficiency.
  • Starship’s fully reusable design minimizes the need for costly hardware replacement, unlike traditional rocket systems.

Scientific Benefits of Starship

  • Enhanced Payload Capability: Starship’s capacity for heavy payloads enables the launch of larger space telescopes and equipment for lunar and Martian missions.
  • Exploration Potential: Scientists can deploy larger and more sophisticated instruments, such as drilling rigs, to explore the Moon and Mars in unprecedented detail.
  • Sample Return Missions: Starship’s capability to return to Earth facilitates the retrieval of valuable samples from other planets, aiding in scientific research and understanding.

PYQ:

[2018] With reference to India’s satellite launch vehicles, consider the following statements:

  1. PSLVs launch satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites.
  2. Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth.
  3. GSLV Mk III is a four-stage launch vehicle with the first and third stages using solid rocket motors, and the second and fourth stages using liquid rocket engines.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 and 3
(c) 1 and 2
(d) 3 only

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Innovations in Sciences, IT, Computers, Robotics and Nanotechnology

Portable Optical Atomic Clock for accurate timekeeping at Sea

Note4Students

From UPSC perspective, the following things are important :

Prelims level: Optical Atomic Clock and Classical Atomic Clock; Difference between them.

Why in the News?

  • Atomic clocks power GPS systems, guiding us in navigation, emergencies, and military operations.
    • Scientists are developing optical atomic clocks to enhance timekeeping accuracy for Navies.

What are Atomic Clocks?

  • Atomic clocks are accurate timekeeping devices that use the vibrations of atoms as a precise measure of time.
  • They rely on the natural oscillations of atoms, usually Caesium or Rubidium atoms, which are extremely stable and predictable.
  • This stability allows atomic clocks to keep time with extraordinary accuracy, often losing or gaining less than a second over millions of years.
    • However they are big, need a lot of power, and are expensive, so they’re mostly used in big research places.

Working Principle:

  • Use of Stable Atoms: Atomic clocks use stable atoms like Cs-133 to keep time really accurate.
  • Atom Energy Levels: Atoms have energy levels like steps on a ladder, and they move between these levels when they’re excited.
  • Creating Resonance: Cesium atomic clocks make caesium atoms vibrate by using microwave radiation at a certain frequency.
  • Defining Time: One second is how long it takes for caesium atoms to vibrate a certain number of times, which sets the standard for time.
  • Accuracy Control: Atomic clocks keep themselves accurate by constantly adjusting to make sure they’re vibrating at the right rate.

Portable Optical Atomic Clocks for Maritime Use

  • New portable optical atomic clocks for ships are more accurate and durable, making them suitable for use at sea.
  • These clocks are the best at sea, which is a big deal for keeping time on ships.

How Optical Atomic Clocks Are Different?

  • Use of Laser: Optical atomic clocks are even more accurate because they use lasers instead of microwaves.
  • Operating Frequency: They work at higher frequencies, which means they can measure smaller time intervals more precisely.
  • Narrow Linewidths: Optical atomic clocks are really stable because they have a narrow range of frequencies, which helps them stay accurate.

Testing and Applications of Portable Optical Atomic Clocks

  • Initial Testing: Scientists tested the new clocks and found they were really stable and accurate, which is a big deal for keeping time.
  • Comparative Performance: These new clocks worked better than old ones, showing they could change how we keep time.
  • Sea Trials: Tests at sea showed the clocks worked well even on a moving ship, proving they could be used for navigation and other important tasks.

Do you know?

  • Three rubidium atomic clocks and six hydrogen maser clocks onboard the Indian Regional Navigation Satellite System (IRNSS) had failed.
  • The failed satellite, IRNSS-1A, is still being used for messaging activities, and the data from other operational satellites will be used to maintain the system’s functionality.

 

PYQ:

[2018] Why is Indian Regional Navigational Satellite System (IRNSS) needed? How does it help in navigation?

[2018] With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements:

  1. IRNSS has three satellites in geostationary and four satellites in geosynchronous orbits.
  2. IRNSS covers entire India and about 5500 sq. km beyond its borders.
  3. India will have its own satellite navigation system with full global coverage by the middle of 2019.

Which of the statements given above is/are correct?

(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) None

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