The Double-Slit Experiment: A Turning Point in Physics

The double-slit experiment was first performed by Thomas Young in 1801 to study light’s behavior.
It demonstrated that light behaves like a wave, creating interference patterns.
In the 20th century, scientists repeated the experiment with electrons and other particles.
Remarkably, even single particles produced an interference pattern over time.
This showed that particles can behave like waves, revealing the principle of wave-particle duality.
Observing which slit a particle passes through destroys the interference pattern.
The experiment highlights the role of measurement in quantum mechanics.
It challenged classical physics, showing that particles don’t have definite properties until observed.
The double-slit experiment became a cornerstone of quantum theory and its mysteries.
Today, it continues to inspire research on quantum behavior, entanglement, and the foundations of reality.