Fact: 'Mile' comes from Latin 'mille passus' (1,000 paces). Fact: Celsius was originally inverted; 0 was boiling! Fact: A pound is exactly 0.45359237 kg. Fact: Light travels 300,000 km in one second! Fact: 'Inch' comes from Latin 'uncia' (one-twelfth). Fact: A "light-year" is distance, not time. Fact: A meter was 1/10,000,000 of the distance from the equator to the Pole. Fact: A gallon of water is 8.34 lbs. Fact: The "cubit" was the first unit of measure. Fact: A nautical mile is 1.15 standard miles.