Course Content
UPSC Notes Samples
Full Syllabus Covered | 100% as per Official UPSC Syllabus
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1. Art & Culture Sample
Covered under topic 1. Indian culture will cover the salient aspects of Art Forms, Literature and Architecture from ancient to modern times.
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1. Indian culture will cover the salient aspects of Art Forms, Literature and Architecture from ancient to modern times. (copy)
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2. Modern Indian history from about the middle of the eighteenth century until the present- significant events, personalities, issues. (copy)
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5. History of the world will include events from the 18th century such as Industrial revolution, World wars, Redrawal of national boundaries, Colonization, Decolonization, Political philosophies like Communism, Capitalism, Socialism etc.- their forms and effect on the society.
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7. Role of women and women’s organizations, Population and associated issues, Poverty and developmental issues, Urbanization, their problems and their remedies.
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10.2. Introduction to Maps
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GS2
All topics that need updates are given below.
2. Functions and responsibilities of the Union and the States, issues and challenges pertaining to the federal structure, devolution of powers and finances up to local levels and challenges therein.
All topics that need updates are given below.
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5. Parliament and State Legislatures – structure, functioning, conduct of business, powers & privileges and issues arising out of these.
All topics that need updates are given below.
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6. Structure, organization and functioning of the Executive and the Judiciary; Ministries and Departments of the Government; pressure groups and formal/informal associations and their role in the Polity.
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12. Welfare schemes for Vulnerable Sections of the Population by the Centre and States and the Performance of these schemes; Mechanisms, Laws, Institutions and Bodies constituted for the Protection and Betterment of these Vulnerable Sections.
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GS3
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11. Science and Technology- developments and their applications and effects in everyday life.
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GS3: BIODIVERSITY AND ENVIRONMENT
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1. Environment
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GS4
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GS3: SCIENCE AND TECHNOLOGY
All topics given below
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1. Motion & Measurements
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9. Metals & Non-Metals
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10. Energy
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12. Plant Organisms
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14. Life Processes
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18. Biotechnology
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19. Information Technology
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20. Space Technology
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National & International Current Affairs (CA) 2025
Current affairs of all months are given below
delete UPSC Sample Notes [English]

xiii. Higgs Boson : The God Particle

The standard model of particle physics hypothesized about Higgs Boson in 1964. The discovery of Higgs particle was announced at CERN on 4 July 2012. The discovery has been called monumental because it appears to confirm the existence of the Higgs field, which is pivotal to the Standard Model and other theories within particle physics.

Why is the Higgs particle called the “God particle”?

  • The nickname is pure invention. There’s nothing in the mathematical equations, in the interpretation of the physics, in any philosophy, or in any religious text or tradition that connects the Higgs particle or the Higgs field with any notion of religion or divinity. 
  • Professor and Nobel Prize Winner Leon Lederman, allowed his book on the Higgs particle to be assigned this attention-getting title, and thus the name!

Field vs Waves vs Particle

  • A field is normally made up of waves. An waves are made up of particles. The least-intense possible wave that a field can have is called a particle. Applying the concept in Higgs Field : Higgs particle is the smallest possible Higgs wave, and a Higgs wave is a ripple in the Higgs field.

What’s so important about the Higgs particle?

  • Finding the Higgs particle is the first big step toward the main goal: understanding the properties of the Higgs field and why it has a non-zero average value.

What’s so important about the Higgs field?

  • The Higgs field has a non-zero average value. And because it does, many elementary particles have mass. Remember that the electric field has zero average value. 
  • Discovery of Higgs field would explain why some fundamental particles have mass when the symmetries controlling their interactions should require them to be massless. It would also explain why the weak force has a much shorter range than the electromagnetic force. 
  • The discovery of a Higgs boson should allow physicists to finally validate the last untested area of the Standard Model’s approach to fundamental particles and forces, guide other theories and discoveries in particle physics, and potentially lead to developments in “new” physics.

Large Hadron Collider

  • Large Hadron Collider (LHC) was built to figure out what the Higgs field is (or Higgs fields are), how it works (or they work), and whether it is (or they are) elementary or composite. In-fact LHC was built to do much more than discover the Higgs Boson, such as…
    • Identify dark matter
    • Search for extra dimensions of space and microscopic black holes
    • Look for signs of unification of fundamental forces
    • Find “evidence” for string theory
    • Find the Higgs Boson
    • Understand antimatter
    • Learn about the fundamental forces that have shaped the universe since the beginning of time, and will determine its fate.

The Higgs field is not the universal giver of mass to things in the universe!

  • Ordinary matter’s mass is mostly from atomic nuclei. That doesn’t come entirely from the Higgs field.The Higgs field gives mass to most of the elementary particles, but not to bigger composite particles. This means even if there is no Higgs field, there would have been protons and neutrons, which of-course has mass. So Higgs field is not the universal giver of mass to things in the universe.

Higgs field is not the sole mass giver even to elementary particles!

  • The Higgs field is not the universal giver of mass to all elementary particles. The Higgs particle itself gets its mass, at least in part, from elsewhere, may be from dark matter.
  • PS: Now it is true that the W and Z particles, the quarks, the charged leptons and the neutrinos must get their mass from a Higgs field. It’s not possible for them to have masses any other way. But this is not true of the Higgs particle itself.
  • NB : The mass-less particles are photons, gluons and gravitons.

Beyond the Higgs Boson

  • The standard model of particle physics hypothesized about Higgs Boson. In fact this hypothesis states that the Higgs Field is made up of elementary particles called Higgs Bosons. But in reality there might be more than one Higgs Field made up of particles other than Higgs Bosons too.


Large Hadron Collider