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Directive Principles of State Policy (DPS): Universalization of Education, Child Labour and Status of Women

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Directive Principles of Stat

In the whole scheme of the Constitution of India the Directive Principles of State Policy are in the form of guidelines to the governments at the center as well as states. Though these principles are non-judiciable, they are essential in the governance of India.

Taken as an idea from the Irish Republic, the Directive Principles of State Policy were incorporated in the Constitution of India with an aim to deliver economic justice and to avoid concentration of wealth in the hands of a few people. They are so instrumental in the good governance that no government can afford to ignore them. Directive principles of state policy, de-facto, are the directives for the future government to blend them in the decision and policies formulated by them.

Also Read: The Directive Principles of State Policy

Directive Principles of State Policy (DPSP) and Universalization of Education

At the time of independence, the percentage of literate people was only 14%. Realizing the importance of education our Government laid emphasis on the spread of literacy among the masses. Inspite of the efforts of the Government in raising the level of literacy, a large section of our population elementary education and its universalisation.

For the spread of mass literacy at primary stage, the government of India, according to National Policy on Education, 1986, launched National Literacy Mission and ‘Operation Blackboard’. The government and many voluntary organizations are making special efforts to educate, those, who were deprived of the benefits of education in their childhood, by opening night schools and adult literacy centers.

Many distance education programmes through correspondence courses and open learning have been initiated in many states. To accomplish the goal of universalization of education the National Institute of Open Schooling and Several other Open University have been set-up. Through the 86th Amendment Act, 2002, the Directive Principles advocating free and compulsory education for children up to age of 14 years has been incorporated in the list of Fundamental Rights under Article 21 A.

Must Read: Defence Procurement Policy (DPP) 2016

DPSP and the Child Labour

Despite having many provisions about children welfare we are facing impediments in eliminating child labour from this part of the world. One of the Directive Principles of State policy caters opportunities and facilities to children to develop in a healthy manner. There is also a Fundament Rights against Exploitation of Children. Our law of the land prohibits the employment of Children below the age of 14 years in mines and industries which are hazardous to their health.

In most of the cases it is the attitude of the parents that is not helpful in the elimination of child labour in India. Many parents force their children, to do some sort of work to earn money and contribute to the family income. However, apart from the lack of will, poverty and social stigma are most important constraints in the accomplishment of eradication of this problem.

It has been finally, as it seems, accepted by our policy makers that unless the willingness and awareness to get rid of the social challenge comes from within, all efforts by governments at various levels would prove useless.

The “Dream of developed India 2020” of Dr. Abdul Kalam Azad can be achieved only when the children, the future of the country, are secured and protected from being exploited.

Don’t Miss: Child Labour

DPSP and the Status of Women

In Indian Society, basically being a male dominated society, father is the head of the family and mother’s position is subordinated to him, that indicates toward a naturally weak position of women. On account of the cruel social customs and religious practices like purdah and Dowry etc., women have been suffering a great deal from the ages.

Women are nearly 48%, that translate into the figure of about 496 million, of total population of the country as per 2001 census. Our Constitution through Fundamental Rights and many Directive Principles of State Policy has stressed the necessity of enhancing the status and education of women. An adequate means of livelihood and equal pay with that men for their work have been catered to women.

Health care and maternity relief have also been catered to working women. Even in the section dealing with Fundamental Duties, it is has been stressed that it is a duty of every citizen of India to renounce practices derogatory to the dignity of women.

Many judicial decisions to restore the dignity of women, to protect their rights by providing them share in the family property, have been taken. Laws have been implemented for their liberation from cruel practices such as bridge burning for dowry, wife beating, sati etc. Prohibition of female infanticide, foetouscide, discrimination against girl child and child marriage’ nearly all form the text of the Directive Principles of State Policy, are measures that can certainly assist in improving the status of women.

It is through the 73rd and 74 Amendment Act, 1991-92, with an aim to empower women, reservation of one third of seats in the Panchayats and Municipalities has been made. There is a similar proposal, pending in the Parliament, for reservation of seats for them in Parliament and in the State Legislatures.

It has been emphasized by many analysts of the Constitution of India that the Directive Principles of State Policy are in the form of holy wishes having no legal sanction behind them; government is not bound to implement them, etc. However, it can be claimed that these Directive Principles are completely useless as they have their own utility and importance. DPSP  are like a Polestar that provide directions. Its basic aim is to persuade the government to cater to the general people social and economic justice in all spheres of life.

In fact, no government can afford to ignore the instructions of the DPSP as they are the reflection of the public opinion and along with this they also reflect the basic spirit of the Preamble of our Constitution.

Must Read: International Women’s Day

Today in History – 5 March

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today in history 5 March

today in history 5 March

1699

Maharaja Jaisingh-II crowned as King of Jaipur kingdom and sat on Amber throne.

1851

Geological Survey of India was established in Calcutta.

1868

Harishchandra Sakharam Bhatwadekar Save Dada alias, who filmed the felicitation function of Wrangler R. P. Paranjapye, was born. This film was titled as “”The Fresh Indian Regular of Cambridge University.”” He was the First Short Documentary Film Maker of Inndi

1905

Shushila Didi, great freedom fighter, was born at Datton Chuhad village, Punjab. She is remembered for her association in the revolutionary activities of Bhagat Singh.

1931

Mahatma Gandh & British viceroy Lord Irwin sign a pact referred in Indian History as “”Gandhi-Irwin Pact””, after which the civic disobedience movement was taken

1948

C. Rajagopalachari appointed the first Indian Governor General to succeed Lord Mountbatten on 21 June.

1995

India and China agree to open two new border points including Nathu La (Sikkim) to facilitate meetings between their military personnel.

1999

The indigenously-built multi-barrel rocket launcher ”Pinaka” is successfully test-fired at Chandipur-on-sea in Orissa.

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Today in History – 4 March

Today in History – 3 March

Today in History – 2 March

Biomes and its Types

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Biomes

Biomes are a way to divide the Earth‘s surface. These divisions are based on climate patterns, soil types, and the animals and plants that inhabit an area. There are biome on dry land and in water. Every inch of the Earth’s surface is a part of one or more biomes.

There are a couple of different ways to look at the number of biomes. Some like to divide biomes into five basic types: aquatic, forest, desert, tundra, and grassland. These five types of biome can be further divided by the differences in seasons or animal and plant species.

Must Read: Types of Indian soils and their distribution

Aquatic Biomes

The aquatic biome consists of any part of Earth that is covered with water. This includes freshwater and salt water. The aquatic biome can be further divided into freshwater biomes, marine biomes, wetland biomes, coral reef biomes, and estuaries. These subdivisions are based on the salt content of the water, the aquatic plants that live there, and the aquatic animals that thrive there.

Forest Biome

The forest biome is the largest and has a wide variety of plants, trees, animals, insects, and microscopic organisms. The major characteristic of the forest biome is its trees. About 30% of the Earth is considered a part of the forest biome. The forest biome is subdivided by its climate and types of trees present. These subdivisions are the rainforest biome, temperate biome, chaparral biome, alpine biome, and taiga biome.

Desert Biome

The desert biome has one major, distinguishing characteristic, the fact that it has very little vegetation. The climate is rather extreme depending on its location. The deserts of Africa are extremely hot during the winters and warm throughout the rest of the year. There are also cold deserts such as those in Antarctica. These deserts are extremely cold during the winter and cold during the other seasons.

Read more: Facts about Desert Biome

Tundra Biome

Tundra biomes are the coldest places on Earth. They are similar to a cold desert except they receive less rainfall and contain different animals and plants. Even though the conditions are harsh, the tundra biome does have plant and animal habitats.

Grassland Biome

The grassland biome is made of rolling hills of various grasses. They receive just enough rain to sustain grass but not enough to grow many trees. There are a few trees that will grow in grasslands but sporadic wildfires keep them under control. There are two types of grassland, the savannas, and temperate grasslands.

Must Read: Coral reefs

Types of Biomes

There are many different types of biomes on the Earth’s surface. Each biome is unique in that it has its own weather and temperature patterns, plant species, and animal species. It is important to understand the uniqueness of each biome in order to understand why certain animals and plants thrive in one area yet would not be able to survive in another. Biomes are also very sensitive and each has special needs in order to maintain itself. Although there are many types of biome, they each fit into two categories: aquatic biomes and terrestrial biomes.

Aquatic Biomes

Aquatic biomes are those that occur under water. This can be saltwater or freshwater. There is saltwater in the ocean and this is where one would find the ocean biome and the coral reef biome. The shallow part of the ocean that contains coral is a part of the coral reef biome.

The freshwater biome includes areas of land covered in water that contains less than 1% of salt water. This includes rivers, lakes, ponds, and wetlands such as swamps and marshes.

Also Read: Climate Change, Technology and Energy Sustainability

Terrestrial Biomes

Terrestrial biomes are those that occur on dry land. These biome differ in their climate, vegetation, and animal life. There are many types of terrestrial biome but the main biomes include tundra biome, desert biome, forest biome, and grassland biome.

  • The tundra biome is one of extreme weather conditions. Temperatures often remain very cold and harsh. Only a few plants and animals can survive there.
  • The desert biome also has extreme weather conditions. There are two types of deserts, hot deserts, and cold deserts. Both desert types are very dry and receive very little rainfall.
  • The forest biome is characterized by its humidity and ample rainfall. The rain allows very tall trees to grow there. There are two types of forest, tropical rainforest, and temperate deciduous forest. These forests are distinguishable by the types of plants and trees that grow there.
  • Grasslands have a lot of variety among its plants and animals. The plants that grow there include many types of flowers. The soil in the grassland is very rich in nutrients so it is easy for many plants to survive there. Even though the temperatures in the grassland biome remain pleasant for most of the year, it does experience a dry season. This dry season sometimes results in a drought which makes water scarce for the plants and animals there.

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Tiger Project; National Tiger Conservation Authority (NTCA)

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tiger reserve

The Centrally administered scheme Project Tiger was launched in April, 1973 with the objective “to ensure maintenance of a viable population of Tigers in India for scientific, economic, aesthetic, cultural and ecological values, and to preserve to all times, areas of biological importance as a national heritage for the benefit, education and enjoyment of the people”.

  •  Amendment of the Wild Life (Protection) Act, 1972 for providing enabling provisions for constitution of the ‘ National Tiger Conservation Authority ’ and the ‘Tiger and Other Endangered Species Crime Control Bureau’.
  • Enhancement of punishment in case of an offence relating to a tiger reserve or its core area. Strengthening of anti-poaching activities, including the special strategy for monsoon patrolling, by providing funding support to the Tiger Reserve States, as proposed by them, for deployment of anti-poaching squads involving ex-army personnel/home guards, apart from workforce comprising of the local people, in addition to strengthening of communication/wireless facilities.
  • Constitution of the National Tiger Conservation Authority with effect from 4 September 2006, for strengthening tiger conservation by, inter alia, ensuring normative standards in tiger reserve management, preparation of reserve specific tiger conservation plan, laying down annual audit report before Parliament, constituting State level Steering Committees under the Chairmanship of Chief Ministers and establishment of Tiger Conservation Foundation.
  • Constitution of a multidisciplinary Tiger and Other Endangered Species Crime control Bureau (Wildlife Crime Control Bureau) with effect from 6 June 2007 to effectively control illegal trade in wildlife.

Read Also: World Wildlife Fund (WWF)

The “in-principle” approval has been accorded by the National Tiger Conservation Authority for creation of new tiger reserves, and sites are:
  • Biligiri Ranganatha Swami Temple Sanctuary (Karnataka)
  • Pilibhit (Uttar Pradesh)
  • Ratapani (Madhya Pradesh)
  • Sunabeda (Odisha) and
  • Mukundara Hills (including Darrah, Jawahar Sagar, and Chambal wildlife Sanctuaries)(Rajasthan)
Besides this states have been advised to send proposal for declaring following areas as Tiger Reserves:
  • Bor (Maharashtra)
  • Suhelwa (Uttar Pradesh)
  • Nagzira-Navegaon (Maharashtra) and
  • Satyamangalam (Tamil Nadu)

Don’t Miss: Project Tiger & Government’s effort to protect tigers in India

The revised project tiger guidelines by National Tiger Conservation Authority have been issued to States for strengthening tiger conservation, which apart from on-going activities, inter alia, including funding support to states for enhanced village relocation/rehabilitation package for people living in core or critical tiger habitats (from One lakh/family to Ten lakh/family), rehabilitation/resettlement of communities involved in traditional hunting, mainstreaming livelihood and wildlife concern in forests outside tiger reserves and fostering corridor conservation through restorative strategy to arrest habitat fragmentation.
A scientific methodology of estimating tiger (including co-predator, pray animals and assessment of habitat status) has been evolved and mainstreamed. The findings of this estimation/assessment have been the benchmark for future tiger conservation strategy. An area of 31,407.11 sq. km. has been notified by 16 Tiger States (out of 17) as core or critical tiger habitat under section 38V of the Wildlife (Protection) Act, 1972, as amended in 2006 (Andhra Pradesh, Arunachal Pradesh, Assam, Chhattisgarh, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Mizoram, Odisha, Rajasthan, Tamil Nadu, Uttarakhand, Uttar Pradesh and West Bengal). The State of Bihar has taken a decision for notifying the or critical tiger habitat in its newly constituted tiger reserve (Sanjay National Park and Sanjay Dubri Wildlife Sanctuary).
Must Read:

Atomic Interferometry: Coherent Control of Matter Waves

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urjit Patel Committee
urjit Patel Committee

Table of Contents

  1. Introduction
  2. Origins and Historical Context
  3. Atom Interferometry vs Optical Interferometry
  4. Matter Waves and de Broglie Interference
  5. Beam Splitters and Mirrors for Atoms
  6. Raman Transitions and Bragg Diffraction
  7. Types of Atom Interferometers
  8. Mach–Zehnder Atom Interferometer
  9. Ramsey–Bordé and Sagnac Interferometers
  10. Phase Accumulation and Measurement
  11. Applications in Inertial Sensing
  12. Precision Tests of Fundamental Constants
  13. Probing Gravitational Redshift and the Equivalence Principle
  14. Quantum Clock Interferometry
  15. Coherence and Decoherence in Atom Interferometers
  16. Cold and Ultracold Atom Sources
  17. Atom Interferometry in Microgravity and Space
  18. Atom Interferometry with Bose–Einstein Condensates
  19. Challenges and Technical Requirements
  20. Conclusion

1. Introduction

Atomic interferometry is the quantum analog of classical interferometry, using atoms as coherent matter waves to perform high-precision measurements of acceleration, rotation, gravity, and fundamental constants.

2. Origins and Historical Context

First proposed in the 1970s, atom interferometry became feasible with the advent of laser cooling and trapping techniques in the 1990s. Today, it plays a pivotal role in quantum sensing and tests of fundamental physics.

3. Atom Interferometry vs Optical Interferometry

While optical interferometers use light waves, atomic interferometers use matter waves. Atoms are massive, enabling sensitivity to inertial and gravitational effects, with longer coherence times under certain conditions.

4. Matter Waves and de Broglie Interference

Atoms exhibit wave–particle duality. Their de Broglie wavelength is:
\[
\lambda = rac{h}{mv}
\]
where \( h \) is Planck’s constant, \( m \) is mass, and \( v \) is velocity. Superposition of atomic paths produces interference.

5. Beam Splitters and Mirrors for Atoms

Atomic beam splitters are realized using:

  • Raman pulses (two-photon transitions)
  • Bragg diffraction from standing light waves
    These create coherent path separation and recombination.

6. Raman Transitions and Bragg Diffraction

  • Raman transitions: use two lasers to drive transitions between hyperfine states while imparting momentum
  • Bragg diffraction: elastic scattering of atoms from optical lattices

7. Types of Atom Interferometers

  • Mach–Zehnder (most common)
  • Ramsey–Bordé (internal state interferometry)
  • Sagnac (rotation-sensitive)
  • Talbot–Lau (near-field imaging)
  • Fountain interferometers (vertical gravimetry)

8. Mach–Zehnder Atom Interferometer

Sequence:

  • First pulse (π/2): splits atom wavefunction
  • Second (π): reflects components
  • Third (π/2): recombines to form interference pattern
    Interference phase encodes external forces.

9. Ramsey–Bordé and Sagnac Interferometers

  • Ramsey–Bordé: measures internal state transitions with laser pulses
  • Sagnac: sensitive to rotation via area enclosed by paths, important for gyroscopes

10. Phase Accumulation and Measurement

Interferometer phase shift is:
\[
\Delta \phi = ec{k}{ ext{eff}} \cdot ec{a} T^2 \] where \( ec{a} \) is acceleration, \( T \) is pulse separation time, and \( ec{k}{ ext{eff}} \) is the effective wavevector.

11. Applications in Inertial Sensing

Atomic interferometers serve as:

  • Accelerometers
  • Gyroscopes (rotation sensors)
  • Gravity gradiometers
    Key in navigation and Earth observation.

12. Precision Tests of Fundamental Constants

Used to measure:

  • Gravitational constant \( G \)
  • Fine-structure constant \( lpha \)
  • h/m ratios (Planck constant over atomic mass)

13. Probing Gravitational Redshift and the Equivalence Principle

Dual-species interferometry tests the universality of free fall:
\[
\eta = 2 rac{a_1 – a_2}{a_1 + a_2}
\]
Also used to measure redshift in atomic clocks under acceleration.

14. Quantum Clock Interferometry

Combines internal energy states with interferometric phase to probe time dilation and relativistic effects. Enables ultra-precise geodesy and fundamental tests.

15. Coherence and Decoherence in Atom Interferometers

Maintaining coherence requires:

  • Ultra-cold atoms
  • Vibration isolation
  • Laser phase stability
    Decoherence sources include collisions, field gradients, and photon scattering.

16. Cold and Ultracold Atom Sources

  • Magneto-optical traps (MOTs)
  • Evaporatively cooled atoms
  • Bose–Einstein condensates (BECs)
    These sources allow long interrogation times and high-contrast fringes.

17. Atom Interferometry in Microgravity and Space

Spaceborne platforms (e.g., CAL on ISS) enable longer free-fall durations, enhancing sensitivity. Applications include gravitational wave detection and global positioning.

18. Atom Interferometry with Bose–Einstein Condensates

BECs offer narrow momentum distributions and high spatial coherence, enhancing fringe contrast and sensitivity.

19. Challenges and Technical Requirements

  • Laser phase noise and stability
  • Control of magnetic and electric field gradients
  • Vibration isolation and alignment
  • Accurate calibration of systematics

20. Conclusion

Atomic interferometry is a cornerstone of quantum sensing, combining the coherence of matter waves with precision control to enable groundbreaking measurements in fundamental science and applied technology.

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