SOLAR TIME Meaning and
Definition
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Solar time refers to the measurement of time based on the position of the Sun in the sky. It is a natural and primitive way of defining time, prior to the invention of precise mechanical clocks. Solar time can be understood by observing the apparent movement of the Sun, as it appears to rise, reach its highest point (known as solar noon), and set each day.
Solar time is directly influenced by the rotation of the Earth on its axis and the Earth's orbit around the Sun. Due to these factors, solar time is not constant throughout the year or in different locations on Earth. The time displayed by a sundial is an example of solar time, as it is determined by the shadow cast by the Sun on a fixed surface.
However, solar time differs from the widely used system of civil time, such as the time displayed on watches and clocks. Civil time refers to the standardized time adopted by a particular region or country, which is typically determined by dividing the day into equal segments. Civil time may be adjusted to account for factors like Daylight Saving Time or time zones.
Understanding solar time is significant in various fields, especially in astronomy, navigation, and agriculture. It serves as a reference for celestial observations, determining the positions of stars and planets. Solar time also impacts agriculture as it helps in deciding the optimal periods for planting, harvesting, and managing crops based on the natural daylight hours available.
Etymology of SOLAR TIME
The word "solar" comes from the Latin word "solaris", which means "of the sun". It is derived from the noun "sol", meaning "sun". The term "solar time" refers to the measurement of time based on the position of the sun in the sky. It is a natural and ancient way of tracking time, where the day is divided into intervals defined by the sun's movement. Hence, the word "solar" in "solar time" emphasizes its association with the sun.
