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Chemistry

Same Heat Either Way: Hess's Law

Whether a chemical reaction takes one step or many, the total heat is the same if the start and finish match. This article covers who Hess was, why the law holds, how to calculate

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Psychology

When Your Eyes Change What You Hear: The McGurk Effect

The McGurk effect is an illusion in which a mismatch between the sound you hear and the lip movements you see makes you hear a sound that was never actually spoken. This article co

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Chemistry

The Force That Restores Balance: Le Chatelier's Principle

Le Chatelier's principle states that when a system at chemical equilibrium is disturbed by a change in concentration, pressure, or temperature, the equilibrium shifts in the direct

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General knowledge

Masterpieces Are Always the Few: Sturgeon's Law

Sturgeon's Law is the rule of thumb that 90% of anything is crud. We look at how it came about, what it really means, similar ideas that came before it, and how to use it wisely in

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Food & nutrition

When Nuttiness Turns Stale: Rancidity

Rancidity is the process in which the fats in food break down by reacting with oxygen, water, or enzymes, producing unpleasant smells and flavors and lowering quality. We look at i