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⚛️ KNOW SECONDARY · AGES 12–18

PHYSICS

⚛️ From Newton's Apple to Quantum Weirdness!

📖 350 Topics 🆓 FREE + PRO ⏱️ 5 min per comic 🧠 Quiz included
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ANCIENT
Honey and pitch pour slowly
📜
1687
Newton studies fluid resistance
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1840s
Poiseuille measures flow in tubes
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1900s
Engine oils rated by viscosity
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TODAY
Lava, medicine, and food science
🍯 VISCOSITY: FLOW RESISTANCE
TOPIC 23 · PHYSICS · HONEY · WATER · FRICTION
PAGE 1 OF 5, THICK VS THIN
THE POUR TEST
Comic illustration comparing honey pouring slowly next to water pouring quickly from jars
WHY DOES HONEY POUR SLOWER THAN WATER?
Tilt two jars and the difference is obvious. Water races out in a thin stream. Honey crawls down the side in a thick golden rope. Both are liquids, both obey gravity, yet one flows far faster. The reason is viscosity: a fluid's internal resistance to flow. Viscous fluids fight motion from the inside. Molecules and tiny layers rub against each other as they slide past, creating friction you cannot see but can definitely feel when you stir. Higher viscosity means a thicker, slower-pouring liquid. Lower viscosity means a runnier fluid that flows easily.
🍯 VISCOSITY
Viscosity measures how strongly a fluid resists flowing. Thick honey has high viscosity. Thin water has low viscosity.
POUR!
HONEY
Comic illustration of thick honey dripping slowly from a spoon
🍯 High viscosity, slow pour
🌀 Sticks and coils on itself
💪 Needs more force to stir
WATER
Comic illustration of water pouring quickly and freely from a glass
💧 Low viscosity, fast flow
🌊 Splashes and spreads easily
🏃 Runs downhill with little drag
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