Back تجربة قطرة القار Arabic Pechtropfenexperiment German Experimento de la gota de brea Spanish Pikitippakoe Finnish Expérience de la goutte de poix French ניסוי טיפת הזפת HE Esperimento della goccia di pece Italian ピッチドロップ実験 Japanese 피치 낙하 실험 Korean Pekdruppelexperiment Dutch
A pitch drop experiment is a long-term experiment which measures the flow of a piece of pitch over many years. "Pitch" is the name for any of a number of highly viscous liquids which appear solid, most commonly bitumen, also known as asphalt. At room temperature, tar pitch flows at a very low rate, taking several years to form a single drop.
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