Quantum mechanics isn’t just a strange theory from physics textbooks — it’s the foundation of nearly every technology we use today.

From computers and smartphones to lasers, fiber-optic internet, and even the future of clean energy, modern technology works because of quantum rules. In this video, I explain how quantum mechanics — especially quantum tunnelling — quietly powers the digital world, and why nothing from transistors to nuclear fusion would be possible without it.

In this video, you’ll learn:

• How quantum tunnelling makes transistors and modern electronics possible

• Why computers and smartphones rely on quantum physics at the smallest scales

• How lasers work using quantum energy levels

• Why quantum mechanics governs all material behavior

• How nuclear fusion in stars — and future fusion reactors — relies on quantum tunnelling

Quantum mechanics isn’t the future of technology — it’s the reason the present works at all.