Search results
Results from the WOW.Com Content Network
Nano (symbol n) is a unit prefix meaning one billionth. Used primarily with the metric system, this prefix denotes a factor of 10 −9 or 0.000 000 001. It is frequently encountered in science and electronics for prefixing units of time and length. Examples. Three gold atoms lined up are about one nanometer (nm) long.
0.000 000 000 001; 1000 −4; short scale: one trillionth; long scale: one billionth) ISO: pico-(p) Mathematics: The probability in a game of bridge of one player getting a complete suit is approximately 2.52 × 10 −11 (0.000 000 002 52%). Biology: Human visual sensitivity to 1000 nm light is approximately 1.0 × 10 −10 of its peak ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. See also: Orders of magnitude (numbers) and Long and short scales Natural number 1000000000 List of numbers Integers ← 10 0 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 Cardinal One billion (short scale) One thousand million, or one milliard (long scale) Ordinal One billionth (short ...
One motivation for such a pursuit is that attributed to the inventor of the word googol, who was certain that any finite number "had to have a name". Another possible motivation is competition between students in computer programming courses, where a common exercise is that of writing a program to output numbers in the form of English words.
One One-Billionth: One One-Milliardth: nano-n: 10 −12: 1×10 −12: One One-Trillionth: One One-Billionth: pico-p: 10 −15: 1×10 −15: One One-Quadrillionth: One One-Billiardth: femto-f: 10 −18: 1×10 −18: One One-Quintillionth: One One-Trillionth: atto-a: 10 −21: 1×10 −21: One One-Sextillionth: One One-Trilliardth: zepto-z: 10 ...
The prefix milli-, likewise, may be added to metre to indicate division by one thousand; one millimetre is equal to one thousandth of a metre. Decimal multiplicative prefixes have been a feature of all forms of the metric system , with six of these dating back to the system's introduction in the 1790s.
The prefixes of the metric system precede a basic unit of measure to indicate a decadic multiple and fraction of a unit. Each prefix has a unique symbol that is added to the beginning of the unit symbol. Some of the prefixes date back to the introduction of the metric system in the 1790s, but new prefixes have been added, and some have been ...
Systematic names and words comprising SI prefixes and binary prefixes are not hyphenated, by definition. Nonetheless, for clarity, dictionaries list numerical prefixes in hyphenated form, to distinguish the prefixes from words with the same spellings (such as duo-and duo). Several technical numerical prefixes are not derived from words for numbers.