21/02/2026
Quantum Tunneling: When Particles Break the Rules
What Is It?
Quantum tunneling is a phenomenon where particles pass through barriers they shouldn't be able to-according to classical physics.
It's like a ghost walking through a wall... but scientifically real!
Key Examples
1 Alpha Decay in Nuclear Physics
In radioactive atoms, alpha particles escape the nucleus by tunneling through energy barriers.
This process powers nuclear reactions and helps date ancient artifacts.
2 Tunnel Diodes & Quantum Devices
Tunnel diodes use tunneling to achieve ultra-fast switching speedsQuantum tunneling is also key to scanning tunneling microscopes (STM), which visualize atoms!
Impact on Technology & Theory
Quantum tunneling is essential for modern electronics, quantum computing, and understanding the probabilistic nature of reality.
It challenges our intuition and proves that particles don't always follow classical paths.
QUIZ TIME
What allows particles to pass through barriers they classically shouldn't?
