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Each unit is within 4-8x apart from each other; each group is ~7,000x apart.
Micro units
The Quantum (50 picoseconds) — the time for light through a hair;
The Atom (500 nanoseconds) — the time for light to travel a pen;
The Hertz (4 milliseconds) — a single violin string oscillation for a high C;
The Frame (25 milliseconds) — a single shot at 40 fps;
The
order of magnitude
Eliezer Yudkowsky • Inadequate Equilibria
Because these multiples are encountered so frequently in both scientific research and in engineering practice, they were assigned specific Greek names to be used as prefixes for the first three orders of magnitude—101 is deka, 102 is hecto, 103 is kilo—and then for every third order: 106 is mega, 109 giga, all the way to yotta, 1024,
Vaclav Smil • How the World Really Works
Multiples in the International System of Units used in the text Prefix Abbreviation Scientific notation hecto h 102 kilo k 103 mega M 106 giga G 109 tera T 1012 peta P 1015 exa E 1018 zetta Z 1021 yotta Y 1024 Yet another way to illustrate the unprecedented range of magnitudes that enables the functioning of modern societies is to compare them with
... See moreVaclav Smil • How the World Really Works
Any number between 1 and 10 will be a multiple of 100, 10 becomes 101, 20 is 2 × 101. The advantages of this become quickly apparent as the numbers grow bigger. A 10-fold jump brings us to items counted in hundreds (102) and then to thousands (103), tens of thousands (104), hundreds of thousands (105), and millions (106).
Vaclav Smil • How the World Really Works
recent estimate is eighty-six billion.
Barbara Tversky • Mind in Motion
Universe Size Comparison | Cosmic Eye (Original HD)
youtu.beThis volume roughly corresponds to that of a cube of material of only about 90 m on a side