shahkar jalal

Joined October 2025

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Why Do Black Holes Evaporate? Understanding Hawking Radiation
Black holes are not truly black. They slowly evaporate. This phenomenon, now known as Hawking radiation, reveals a deep connection between gravity, quantum mechanics, and thermodynamics. But why do black holes evaporate? Where does this radiation come from? And what does it mean for the fate of black holes and the universe itself?
By shahkar jalal2 months ago in Education
Can Black Holes Destroy Information? Exploring the Black Hole Information Paradox
What Does “Information” Mean in Physics? In everyday language, information means data or knowledge. In physics, information has a more precise meaning.
By shahkar jalal2 months ago in Education
What Happens at the Event Horizon of a Black Hole? Exploring the Point of No Return
What Is an Event Horizon? An event horizon is not a physical surface, like the ground or a wall. Instead, it is a boundary in spacetime.
By shahkar jalal2 months ago in Education
Could Time Have Multiple Dimensions? Exploring the Physics Beyond One-Way Time
Understanding Dimensions in Physics To grasp the idea of multiple time dimensions, we must first understand what physicists mean by a dimension.
By shahkar jalal2 months ago in Education
Can Time Exist Without Matter? Exploring One of Physics’ Deepest Questions
Why This Question Matters Understanding whether time can exist without matter affects: • The origin of the universe • The nature of spacetime
By shahkar jalal2 months ago in Education
Does Time Flow Differently in Different Parts of the Universe?
The Old Idea: Universal Time For centuries, scientists believed time was absolute. Newtonian Time • Time flows uniformly
By shahkar jalal2 months ago in Education
What Existed Before Time Began? Exploring Physics, Cosmology, and the Limits of Reality
Why This Question Is So Difficult The phrase “before time” sounds natural, but it hides a logical problem. Time is the framework that allows:
By shahkar jalal2 months ago in Education
Is the Past Still Physically Real? What Physics and Philosophy Reveal
The Everyday View: The Past Is Gone In daily life, time feels like a flowing river. • The past is behind us • The present is the “now”
By shahkar jalal2 months ago in Education
Why Does Time Slow Down Near Massive Objects?
The Old View: Time as Absolute Before the 20th century, scientists believed time was absolute. Newton’s Concept of Time
By shahkar jalal2 months ago in Education
Is Time an Illusion Created by the Human Brain?
What Do We Mean by “Time”? Before asking whether time is an illusion, we must define it. In everyday life, time means:
By shahkar jalal2 months ago in Education
Can Time Stop Inside a Black Hole?
What Is a Black Hole? A black hole forms when a massive star collapses under its own gravity. Key Features • Enormous mass packed into a tiny volume
By shahkar jalal2 months ago in Education
Why Does Time Move Forward and Not Backward?
The Mystery of Time’s Direction Time’s forward motion is often called the arrow of time—a term describing the one-way flow from past to future.
By shahkar jalal2 months ago in Education