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How Blackout Curtains Actually Stop Light
Light doesn't just go through things—it bends, scatters, and finds the path of least resistance. So how do you actually stop it at a window? This episode breaks down the physics and engineering behind blackout curtains: the three-layer paradigm that makes them work, the three technologies used for the opaque middle layer (and which ones fail within two years), and the real ASTM test numbers that separate true blackout from marketing hype. Plus, why the FTC has no definition for "blackout," what a 2025 class-action lawsuit revealed about light transmission claims, and the three durability…
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