shahkar jalal

Joined October 2025

235 stories

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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
Why Does Time Move Slower Near Massive Objects?
The Classical View of Time Before the 20th century, time was thought to be absolute. Newton’s Idea of Time • Time flows uniformly everywhere
By shahkar jalal2 months ago in Education
How Chaos Theory Shapes Weather, Orbits, and Life
What Is Chaos Theory? Chaos theory is the study of deterministic systems that are extremely sensitive to initial conditions.
By shahkar jalal2 months ago in Education
The Physics of Light: Wave, Particle, or Both?
What exactly is light? Is light a wave, like ripples on water? Is it a particle, like tiny bullets of energy? Or is it somehow both?
By shahkar jalal2 months ago in Education
Ultra-Dense Objects: The Strange Physics of Neutron Stars
What Is a Neutron Star? A neutron star is the collapsed core of a massive star that exploded in a supernova. Basic Facts
By shahkar jalal2 months ago in Education
What Is Quantum Decoherence? Where Quantum Weirdness Disappears
Quantum Weirdness: A Quick Reminder Before understanding decoherence, we need to recall what makes quantum mechanics strange.
By shahkar jalal2 months ago in Education
Superconductors: How Materials Lose All Electrical Resistance
What Is Electrical Resistance? Electrical resistance is the opposition a material offers to the flow of electric current.
By shahkar jalal2 months ago in Education
Antimatter: Why It Exists and Where It Went — Searching for the Cosmic Mystery
What Is Antimatter? Antimatter is made of antiparticles, which are counterparts to ordinary particles but with opposite properties.
By shahkar jalal2 months ago in Education
Could the Universe Be Finite? Searching for the Cosmic Edge
What Does “Finite Universe” Really Mean? At first glance, a finite universe sounds simple: a universe with a definite size. But in cosmology, finite does not necessarily mean having walls or edges like a box.
By shahkar jalal3 months ago in Education
The Physics of Gravity: Is It a Force or Geometry?
What Is Gravity? A Simple Definition At its most basic level, gravity is the phenomenon by which mass and energy influence motion. Any object with mass attracts other objects with mass. The larger the mass, the stronger the effect.
By shahkar jalal3 months ago in Education
Why Are Neutrinos Called “Ghost Particles”?
What Are Neutrinos? Neutrinos are subatomic particles that belong to the family of elementary particles, meaning they are not made of smaller components (as far as we know).
By shahkar jalal3 months ago in Education