## A Measure of All Things: The Story of Man and MeasurementEvery wonder how long a cubit really is? How much is in a hogshead and what it refers to? Or the difference between a light year, a parsec and a Planck length? How many pings there are in an acre and who uses which term in what context? Every wonder where all these terms and formats came from and how they are used? Well, wonder no more! In the tradition of Schott's Miscellany, A Measure of All Things is a well-researched page-turning, illustrated look at the way things concrete and theoretical are and have been measured. It ranges from the history of measurement systems (from the earliest times to the present) to the different classes of measurements (length, area, volume, mass, time, temparature, speed, power, energy, pressure and everyday, unscientific measurements). A Measure of All Things covers the origins of the various units of measurement, the ways in which they developed and changed over time, and the many connections between them. |

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### Contents

Early Forms of Measurement 10 Liquid Barrel Volumes | 60 |

The Origins of the Metric System 20 Mass | 66 |

A Measure | 87 |

The unirerse is written in the lansiay? of mathematics and its characters | 110 |

A Measure of A Measure | 123 |

### Common terms and phrases

acceleration due atmospheric pressure barrel base unit binary Britain Celsius centimeter century cubic meter decimal defined definition density derived unit distance divided due to gravity earth electrical electron energy equivalent expressed feet fluid ounce foot foot-pound force furlong gallon gauge gram Greek Imperial and U.S. inch isotopes joule kilogram kilometer knots land laser liquid means meters per second metric system minute of arc mole motion nautical mile newton newton meter object orbit parsec particles pint Planck length pound-force prefixes proton radioactive Roman rotation scale second per second SI derived unit SI prefixes solar special name speed of light speed of sound square meter standard Sumerian systems of measurement temperature tonne troy pound U.S. Customary system U.S. CUSTOMARY UNITS unit of force unit of length unit of mass units of measurement units of volume velocity watts wavelength waves weights and measures yard