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
Understanding Dimensions in Physics To grasp the idea of multiple time dimensions, we must first understand what physicists mean by a dimension.
Why This Question Matters Understanding whether time can exist without matter affects: • The origin of the universe • The nature of spacetime
The Old Idea: Universal Time For centuries, scientists believed time was absolute. Newtonian Time • Time flows uniformly
Why This Question Is So Difficult The phrase “before time” sounds natural, but it hides a logical problem. Time is the framework that allows:
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”
The Old View: Time as Absolute Before the 20th century, scientists believed time was absolute. Newton’s Concept of Time
What Do We Mean by “Time”? Before asking whether time is an illusion, we must define it. In everyday life, time means:
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
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.
The Classical View of Time Before the 20th century, time was thought to be absolute. Newton’s Idea of Time • Time flows uniformly everywhere
What Is Chaos Theory? Chaos theory is the study of deterministic systems that are extremely sensitive to initial conditions.
