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How to Write Interval Notation: A Beginner’s Guide
Expressing Intervals Using Parentheses, Brackets, and Infinity Symbols When writing interval notation, it’s important to use the correct symbols to represent the endpoints of the interval. The three main symbols used in interval notation are parentheses, brackets, and infinity symbols. Parentheses are used to represent an endpoint that is not included in the interval. For example, the interval (1, 5)…
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The Surprising Science Behind Folding Paper: How Many Times Can You Fold a Piece of Paper?
The Physics of Folding: Why There’s a Limit to How Many Times You Can Fold a Piece of Paper The act of folding a piece of paper seems simple enough, but it actually involves complex physics principles. When you fold a piece of paper, you’re essentially bending it in half, which causes the two halves to come together and take…
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How to Make Elephant Toothpaste: A Step-by-Step Guide
Understanding the Science Behind Elephant Toothpaste Elephant toothpaste is a foamy substance that shoots out of a container in a dramatic chemical reaction. The reaction is between hydrogen peroxide, dish soap, and a catalyst such as potassium iodide or yeast. When the hydrogen peroxide is mixed with the catalyst, it decomposes into water and oxygen gas. The soap helps trap…
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