Approximate Numbers Everyone Should Know

The Scale of Things

"Space is big. Really big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space."
Douglas Adams, The Hitchiker's Guide to the Galaxy .

The River of Time

Mathematics

Names and prefixes for big and small numbers

Common Unit conversions

The Earth

Astronomy

Water

Air

Fire

Melting points

Boiling points

Material Densities

Common material strengths

Humanity

Economic (most figures from The World Bank

The following figures are hard to find, especially for recent years, and somewhat uncertain.

Simple Formulas




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