World Quantum Day 2026: April 14 Planck Constant Celebration
World Quantum Day 2026: Why April 14 Marks the Quantum Revolution’s Global Moment Today is World Quantum Day—April 14, 2026—a date chosen not by chance but by physics itself. The numbers 4.14 represent the first three digits of Planck’s constant (4.1356677×10⁻¹⁵ eV·s), the fundamental value that defines the boundary between classical and quantum reality ….
