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Naismith’s Rule Explained

Naismith’s rule is a rule of thumb that helps in the planning of a walking or hiking expedition by calculating how long it will take to walk the route, including the extra time taken when walking uphill. It was developed by William Naismith, a Scottish Mountaineer in 1892. It can be expressed as : Allow …

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What Does A Catalyst Do?

When you use laundry detergent to get rid of a stain on a shirt, you are watching a catalyst in action during a chemical reaction. Detergents have enzymes, which are catalysts that break up dirt and other stains on clothing. A catalyst is a substance that speeds up the rate of a chemical reaction. It …

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