Follow your curiosity

What discovery has been shared with you?

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Physics

Wave Function Collapse

Quick fact

Before observation, particles exist as probabilities; only when measured do they 'choose' a specific state.

Why this is interesting

Imagine a particle that exists in multiple places at once until you look—then it suddenly chooses one spot. How does this happen?

Read the full explanation

Understanding Wave Function Collapse

In quantum mechanics, particles don’t have definite positions or velocities until observed. Instead, their states are described by wave functions that represent all possible outcomes. When you measure the system, its wave function collapses into one specific outcome—like flipping a coin that only lands on heads once it's caught.

A deeper explanation

Wave function collapse is the process by which a quantum system transitions from a superposition of states to a single definite state upon measurement. This phenomenon highlights the role of observation in shaping reality at the quantum level, and it remains one of the most intriguing and debated aspects of modern physics.

Keep FACTREE close

Internet access is required. Updates arrive when you reopen or reload the app. You may need to sign in again in the installed app.