Scientific Notation
A way of writing very large or very small numbers as a coefficient multiplied by a power of 10. For example, 3,000,000 = 3 × 10^6.
Scientific notation was developed precisely because human brains can't handle raw large numbers. Instead of writing 602,214,076,000,000,000,000,000 (Avogadro's number), we write 6.022 × 10^23. The exponent tells you the order of magnitude; the coefficient gives precision.
The format is always: (number between 1 and 10) × 10^(exponent). The exponent is the key part. When comparing two numbers in scientific notation, look at the exponent first. 3 × 10^9 vs 7 × 10^6: the first is about 400 times larger because the exponents differ by 3 (each exponent step = 10x).
Scientific notation is standard in science, engineering, and computing. It's the linguistic tool that lets humans discuss quantities from the subatomic (10^-35) to the cosmic (10^26) without losing track of scale. Without it, modern science would be practically impossible.
When using the How Big? tool, numbers are often presented alongside their scientific notation to help build intuition for what each power of 10 represents.
See it in action
Definitions tell you what a number is. Visualization shows you what it means.
Open How Big? Tool