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In most cases, the base unit is seconds or years. Prefixes are not usually used with a base unit of years. Therefore, it is said "a million years" instead of "a megayear". Clock time and calendar time have duodecimal or sexagesimal orders of magnitude rather than decimal, e.g., a year is 12 months, and a minute is 60 seconds.
Ten seconds (one sixth of a minute) minute: 60 s: hectosecond: 100 s: milliday: 1/1000 d (0.001 d) 1.44 minutes, or 86.4 seconds. Also marketed as a ".beat" by the Swatch corporation. moment: 1/40 solar hour (90 s on average) Medieval unit of time used by astronomers to compute astronomical movements, length varies with the season. [4]
Trillion is a number with two distinct definitions: 1,000,000,000,000, i.e. one million million, or 10 12 (ten to the twelfth power), as defined on the short scale ...
An analogy from a 1986 New York Times article helps put it into perspective: a million seconds is almost 12 days, a billion seconds is about 31.7 years, and a trillion seconds is about 31,709.8 years.
Names of numbers above a trillion are rarely used in practice; such large numbers have practical usage primarily in the scientific domain, where powers of ten are expressed as 10 with a numeric superscript. However, these somewhat rare names are considered acceptable for approximate statements.
4×10 12 (4 trillion) The estimated time until the red dwarf star Proxima Centauri, the closest star to the Sun today, at a distance of 4.25 light-years, leaves the main sequence and becomes a white dwarf. [141] 10 13 (10 trillion) The estimated time of peak habitability in the universe, unless habitability around low-mass stars is suppressed ...
Amazon reached a record market valuation of $1.5 trillion in July 2020. Ever since, Bezos, Bill Gates, Elon Musk, Mark Zuckerberg and more consistently battle it out for who is the richest person ...
The number of neuronal connections in the human brain (estimated at 10 14), or 100 trillion/100 T The Avogadro constant is the number of "elementary entities" (usually atoms or molecules) in one mole ; the number of atoms in 12 grams of carbon-12 – approximately 6.022 × 10 23 , or 602.2 sextillion/60.2Sx.