Metal-Dog

Metal-Dog t1_jefy4bs wrote

Fibonacci was a mathematician who published a book. The entire purpose of the book was to show how much easier it is to do mathematics using Arabic numerals, as opposed to Roman numerals. One example he gave was a simple list of numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89... et cetera. The sequence is formed by adding the two most recent numbers to get the next number.

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Metal-Dog t1_j9un6hi wrote

Airplane wings need to have air around them in order to generate lift. The air which passes over the wing moves faster and at a lower pressure than the air which passes below the wing.

Airplane engines are designed to pull or push the airplane through air. If the air is too thin, or if there is no air, then the engine has nothing to push against.

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