Who Invented Zero, and Why?
Who Invented Zero, and Why? — The moment humanity accepted and named "nothing," we could handle infinitely large numbers. Sometimes the greatest discoveries begin with looking squarely at what's empty, what isn't there.
Zero means "nothing." But isn't that strange — why make a number for nothing at all? 105 and 15 are completely different by one zero. Why is this "nothing" number so important?
Astonishingly, for a long time people had no zero! Look at Roman numerals (I, V, X, C) — no zero. So writing big numbers was truly inconvenient. People thought, "why write down nothing?" Then about 1,500 years ago, mathematicians in India had a revolutionary idea: write "nothing" as a number too! This idea of zero spread across the world through Arab merchants.
Zero's true greatness lies in "place value." We write the same digit with different values by position — 3 is 3, but 30 puts the 3 in the "tens place" to mean 30. But when the tens place is empty, like in "three hundred and five," what fills that empty slot? Zero! Write 305 and the 0 says exactly "the tens place is empty." Without zero you couldn't tell 35 from 305 from 3005. Zero is the cleverest number — it shows "nothing" while "holding the place" for other digits. Computers handling everything with 0 and 1 was possible only because zero existed.
- Writing every big number (100, 1000, 100 million…)
- A computer's binary (0 and 1)
- Reference points in temperature and coordinates (0 degrees, the origin)
- Digital clocks, calculators, all calculation
零 (ryeong) means scattered like rain (雨) until nothing remains — the 零 of "zero point, sub-zero." Establishing emptiness as a number, the zero, is exactly the math of 零.
Meet this hanja in Cheonjamun →The moment humanity accepted and named "nothing," we could handle infinitely large numbers. Sometimes the greatest discoveries begin with looking squarely at what's empty, what isn't there.
