TERRESTRIAL TIME Meaning and
Definition
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Terrestrial time (TT) is a system of time measurement that is based on the rotation of the Earth. It provides a consistent and uniform time scale for scientific and practical applications. Terrestrial time is used primarily in astronomy and is crucial for predicting and calculating celestial events.
Terrestrial time is based on the concept of the Earth's mean solar day, which is the time it takes for the Earth to complete one full rotation on its axis with respect to the Sun. However, due to various factors such as the Earth's axial tilt and irregularities in its rotation, the length of the mean solar day is not constant. Therefore, a more precise time scale is required for scientific calculations.
To overcome the irregularities of the mean solar day, terrestrial time is defined by using atomic clocks that measure the vibrations of atoms in cesium or other elements. The International Atomic Time (TAI) is the fundamental time scale that forms the basis for terrestrial time. It is adjusted to account for the slow and gradual change in Earth's rotation rate.
Terrestrial time is commonly used in astronomy for precise calculations of celestial events such as planetary positions, eclipses, and satellite orbits. It allows scientists to accurately coordinate observations and perform calculations over long periods of time. Terrestrial time also serves as the basis for other time scales, such as Coordinated Universal Time (UTC), which is used for civil and everyday purposes worldwide.
Common Misspellings for TERRESTRIAL TIME
- rerrestrial time
- ferrestrial time
- gerrestrial time
- yerrestrial time
- 6errestrial time
- 5errestrial time
- twrrestrial time
- tsrrestrial time
- tdrrestrial time
- trrrestrial time
- t4rrestrial time
- t3rrestrial time
- teerestrial time
- tedrestrial time
- tefrestrial time
- tetrestrial time
- te5restrial time
- te4restrial time
- tereestrial time
Etymology of TERRESTRIAL TIME
The etymology of the word "terrestrial" can be traced back to the Latin word "terra", which means "earth". It entered English from the French word "terrestre" in the late 15th century. "Terrestrial" is an adjective that describes things related to the Earth or its inhabitants.
The word "time" has its origins in the Old English word "tīma", which referred to a period or a space of time. It is related to the Old Norse word "timi" and German word "Zeit". "Time" has been used in the English language since the 12th century and is commonly used to designate the ongoing sequence of events.
The phrase "terrestrial time" combines these two terms, where "terrestrial" specifies the context of Earth, and "time" refers to the measurement or passage of it.
Similar spelling words for TERRESTRIAL TIME
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