That crisp, fizzy “pssst” when you open a soda or beer can isn’t just satisfying—it’s a miniature physics and engineering lesson. Here’s the high-stakes science happening in your hand. The Pressure Cooker in Your Palm Every unopened beverage can is a sealed pressure vessel. Carbonated drinks contain dissolved CO₂, which exists in equilibrium between the … Continue reading Why a Soda Can Says ‘Pssst’ — And the Hidden Engineering Behind That One Sound