14/05/2026
Earthquake Lights (EQL) –
What are Earthquake Lights (EQL)?
Rare luminous atmospheric phenomena seen:
Before earthquakes
During earthquakes
After earthquakes
Earlier considered:
Myths
UFO sightings
Now recognized by:
United States Geological Survey
NASA
Called:
Co-seismic optical events
Pre-seismic optical events
Formation Mechanism (Flowchart)
1. Tectonic Stress Builds Up
↓
Huge pressure develops in lithosphere
Especially in:
Igneous rocks
Fault zones
↓
2. Activation of “p-holes”
↓
Stress activates charge carriers
Called:
Positive holes (p-holes)
↓
3. Movement Through Faults
↓
Charges move rapidly upward
Fault systems act as conduits
↓
4. Ionization of Atmosphere
↓
Charges reach Earth’s surface
Contact with atmosphere ionizes air
↓
5. Plasma-like Glow Forms
↓
Creates luminous discharge
Appears as glowing lights in sky
↓
6. Lithosphere–Atmosphere Coupling
↓
Electric potential couples with:
Lower atmosphere
Ionosphere
Produces visible EQL phenomenon
Characteristics of EQL
Different Forms
Luminous spheres (ball lightning)
Vertical beams
Sheet lightning
Streamers
Localized glowing patches
Location Specific
~97% cases occur near:
Rift zones
Sub-vertical fault systems
Common where tectonic plates separate
Timing
Seen:
Before main earthquake
During crustal movement
Around seismic shocks
Silent Phenomenon
Unlike thunderstorm lightning:
Usually silent
No thunder sound
Significance
Possible Early Warning Signal
May indicate impending earthquake activity
Scientific Importance
Helps study:
Lithosphere–atmosphere coupling
Electrical properties of Earth’s crust
Seismic processes
Keywords for UPSC
Earthquake Lights (EQL)
p-holes
Tectonic stress
Plasma discharge
Rift zones
Lithosphere–atmosphere coupling
Seismic lights
Pre-seismic phenomena
One-Line UPSC Summary
Earthquake Lights (EQL) are rare luminous atmospheric phenomena produced due to tectonic stress-induced electrical discharge in Earth’s crust before or during earthquakes.
12/05/2026
Reports and Indexes in news
11/05/2026
Australia
Exercise AUSTRA HIND
Bangladesh
Exercise SAMPRITI
China
Exercise HAND IN HAND
France
Exercise SHAKTI
Indonesia
Exercise GARUDA SHAKTI
Kazakhstan
Exercise PRABAL DOSTYK
Kyrgyzstan
Exercise KHANJAR
Maldives
Exercise EKUVERIN
Mongolia
Exercise NOMADIC ELEPHANT
Myanmar
IMBEX
Nepal
Exercise SURYA KIRAN
Oman
Exercise AL NAGAH
Russia
Exercise INDRA
Seychelles
Exercise LAMITIYE
Sri Lanka
Exercise MITRA SHAKTI
Thailand
Exercise MAITREE
UK
Exercise AJEYA WARRIOR
USA
Exercise YUDH ABHYAS
USA
Exercise VAJRA PRAHAR.
07/05/2026
To Be Read From The Hindu and Indian Express Newspaper Today
28/04/2026
Anti-Defection Law
Background
Introduced through 52nd Constitutional Amendment Act
Added Tenth Schedule to the Constitution
Objective:
➝ Curb political defections
➝ Ensure stability of governments
➝ Prevent horse-trading
Key Provisions
Applies to MPs and MLAs
Grounds for disqualification:
Voluntarily giving up party membership
Voting/abstaining against party whip
Decision authority:
Speaker (Lok Sabha/Assembly)
Chairman (Rajya Sabha)
91st Constitutional Amendment (2003)
Strengthened the law:
Two-thirds rule for merger (earlier 1/3 split allowed)
Removed split provision
Cap on ministers:
Max: 15% of House strength
Min: 12 ministers
Merger Rule
Valid defection only if ≥ 2/3 members join another party
Otherwise → Disqualification
Current Issue: Rajya Sabha Defection
7 MPs from Aam Aadmi Party joined Bharatiya Janata Party
Debate:
View 1: Valid merger (2/3 condition satisfied in RS)
View 2: Merger must apply to entire party, not just MPs
Key figure: Arvind Kejriwal (party leadership role in merger question)
🏛️ Role of Chairman (Rajya Sabha)
Can:
Accept merger → No disqualification
Reject → Start disqualification process
Decision subject to judicial review
Issues / Criticism
1. Loss of Legislative Independence
MPs/MLAs cannot vote freely
Fear of disqualification → “rubber stamp” role
2. Centralisation of Power
Power shifts to party leadership
Weakens representative democracy
3. Delay in Decisions
No time limit for Speaker/Chairman
Members continue despite pending cases
4. Legal Grey Areas
Ambiguity in:
Meaning of “voluntarily giving up”
Scope of merger (party vs legislature wing)
Impact on Parliament
Defecting MPs may:
Still be officially in old party
Vote for new alliance
Creates constitutional anomaly
Judicial View
Supreme Court of India:
Allows judicial review after decision
Advises timely disposal (no fixed limit)
Important Points for Mains Answer
Balance needed between:
Political stability vs legislative freedom
Suggested reforms:
Independent tribunal (instead of Speaker)
Time-bound decisions
Limit whip only