Mathematics

Mathematics

Of or pertaining to the study of the measurement, properties, and relationships of quantities and sets, using numbers and symbols.

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Mathematics > Measurements

Islamic calendar

Mathematics; Measurements

The Islamic calendar is a lunar calendar consisting of 12 months in a year of 354 or 355 days. It is used to date events in many Muslim countries, and used by Muslims everywhere ...

lunar calendar

Mathematics; Measurements

A lunar calendar is a calendar that is based on cycles of the lunar phases. Because there are slightly more than twelve lunations in a solar year, the period of 12 lunar months ...

Maya calendar

Mathematics; Measurements

The Maya calendar is a system of calendars used in pre-Columbian Mesoamerica, and in many modern communities in highland Guatemala and in Veracruz, Oaxaca and Chiapas, Mexico. ...

chronometry

Mathematics; Measurements

Chronometry is the science of the measurement of time, or timekeeping. It should not to be confused with chronology, the science of locating events in time, which often relies ...

12-hour clock

Mathematics; Measurements

The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods: a.m. and p.m.. The 24 hour/day cycle starts at 12 a.m., runs through 12 noon ...

daylight saving time

Mathematics; Measurements

Daylight saving time or summer time is the practice of advancing clocks during the lighter months so that evenings have more daylight and mornings have less. Typically clocks are ...

second

Mathematics; Measurements

The second is the base unit of time in the International System of Units and is also a unit of time in other systems of measurement. It is the second division of the hour by ...