History of the measurement of mass

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History of the measurement of mass by Mind Map: History of the measurement of mass

1. started

1.1. necessary measurement

1.1.1. http://www.historyworld.net/wrldhis/PlainTextHistories.asp?historyid=ac07

1.1.2. Length Egypt Mesopotamia

1.1.3. weight

1.1.4. volume Geistesblitz Tools Email & SMS Gateways Compare Editions

1.1.5. time New node

2. picture about history of measurement of mass

2.1. http://www.google.com.hk/imglanding?q=mass&um=1&hl=zh-TW&tbs=isch:1&tbnid=vMger0Qo03U0OM:&imgrefurl=http://www.tutorvista.com/content/science/science-i/atoms-molecules/atom.php&imgurl=http://image.wistatutor.com/content/atoms-molecules/atomic-mass-determination.jpeg&zoom=1&w=430&h=358&iact=hc&ei=ZRXjTJfOLofEvgPjkPWvDg&oei=ABXjTI6iOYy0vgPGupTzDQ&esq=11&page=11&tbnh=135&tbnw=162&start=221&ndsp=21&ved=1t:429,r:1,s:221&biw=1161&bih=733

3. timetable

3.1. Sundial and water clock: from the 2nd millennium BC

3.1.1. Erathosthenes and the camels

3.2. Hero's dioptra: 1st century AD

3.2.1. Hipparchus

3.3. The hour: 14th century AD

3.3.1. clocks

3.4. Minutes and seconds: 14th - 16th century AD

3.4.1. von Guericke

3.5. Barometer and atmospheric pressure: AD 1643-1646

3.5.1. Accademia del Cimento

3.6. Mercury thermometer: AD 1714-1742

3.7. Chronometer: AD 1714-1766

3.8. Sextant: AD 1731-1757

3.8.1. European voyages in the 15th century practical improvements