Second Converter
Convert Second to Decade and more • 33 conversions
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Unit Explanations
Second of Arc"
Source UnitA second of arc, also known as an arcsecond, is a unit of angular measurement that is equal to 1/3600 of a degree or 1/60 of an arcminute. It is used primarily in fields that require precise angular measurement, such as astronomy, navigation, and mapping. An arcsecond is a small unit, reflecting the requirement for high precision in measurements of celestial objects and angles on the Earth's surface. The notation for a second of arc is usually represented by a double prime symbol ("), following the degree and arcminute symbols.
Current Use
Today, the second of arc is indispensable in astronomy for measuring the positions and movements of celestial objects with high precision. It is also used in geodesy and cartography to define the precise angular relationships between points on the Earth. Additionally, arcseconds are employed in the calibration of telescopes and other optical instruments where small angular measurements are critical.
Fun Fact
An arcsecond is roughly the angle subtended by a U.S. dime at a distance of 2.4 miles.
Decadedec
Target UnitA decade is a defined unit of time that spans exactly ten consecutive years. This unit is commonly used in various contexts, including historical analysis, cultural discussions, and scientific research. The decade can refer to any ten-year span, but it is often associated with specific decades in the 20th and 21st centuries, such as the 1980s or the 2000s. Its significance lies in its ability to encapsulate trends, events, and developments that characterize a particular period.
Current Use
In contemporary society, decades are frequently used as a framework for analyzing changes in culture, technology, and politics. For instance, the 1990s are often characterized by the rise of the internet, while the 2000s are associated with global events such as 9/11. Various industries, including fashion, music, and film, often release decade-themed retrospectives, celebrating the defining characteristics of each ten-year period.
Fun Fact
The 1920s are often called the 'Roaring Twenties' due to the economic boom and cultural changes.
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= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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Second of Arc
angle • Non-SI
Definition
A second of arc, also known as an arcsecond, is a unit of angular measurement that is equal to 1/3600 of a degree or 1/60 of an arcminute. It is used primarily in fields that require precise angular measurement, such as astronomy, navigation, and mapping. An arcsecond is a small unit, reflecting the requirement for high precision in measurements of celestial objects and angles on the Earth's surface. The notation for a second of arc is usually represented by a double prime symbol ("), following the degree and arcminute symbols.
History & Origin
The concept of dividing a circle into degrees and further into minutes and seconds dates back to ancient Babylonian astronomers, who used a sexagesimal (base-60) number system. The division of a degree into 60 parts, known as minutes, and each minute into 60 parts, known as seconds, allowed for more precise measurement and calculation of angles in the study of celestial bodies. This system became widespread with the work of Greek and later Islamic scholars, who advanced astronomical knowledge and navigation.
Etymology: The term 'second' in this context comes from the Latin 'secunda', meaning 'second division' or 'second order', referring to its place in the hierarchical division of degrees.
Current Use
Today, the second of arc is indispensable in astronomy for measuring the positions and movements of celestial objects with high precision. It is also used in geodesy and cartography to define the precise angular relationships between points on the Earth. Additionally, arcseconds are employed in the calibration of telescopes and other optical instruments where small angular measurements are critical.
💡 Fun Facts
- •An arcsecond is roughly the angle subtended by a U.S. dime at a distance of 2.4 miles.
- •The Hubble Space Telescope can resolve images with an angular resolution of about 0.05 arcseconds.
- •In one parsec, which is a unit of astronomical distance, a star would have a parallax angle of one arcsecond.
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Decade
time • Non-SI
Definition
A decade is a defined unit of time that spans exactly ten consecutive years. This unit is commonly used in various contexts, including historical analysis, cultural discussions, and scientific research. The decade can refer to any ten-year span, but it is often associated with specific decades in the 20th and 21st centuries, such as the 1980s or the 2000s. Its significance lies in its ability to encapsulate trends, events, and developments that characterize a particular period.
History & Origin
The concept of the decade has roots in ancient civilizations, where time was divided into various intervals for agricultural and religious purposes. The 10-year period was particularly favored due to its alignment with certain lunar cycles and the decimal number system. The modern usage of the term dates back to the late 19th century when it began to gain popularity in historical and sociocultural discussions.
Etymology: The term 'decade' originates from the Greek word 'dekas', meaning 'ten'. This was adopted into Latin as 'decas', which was then integrated into English in the early 19th century. The prefix 'deca-' denotes a factor of ten, which is reflected in the structure of the word.
Current Use
In contemporary society, decades are frequently used as a framework for analyzing changes in culture, technology, and politics. For instance, the 1990s are often characterized by the rise of the internet, while the 2000s are associated with global events such as 9/11. Various industries, including fashion, music, and film, often release decade-themed retrospectives, celebrating the defining characteristics of each ten-year period.
💡 Fun Facts
- •The 1920s are often called the 'Roaring Twenties' due to the economic boom and cultural changes.
- •The term 'decade' is frequently used in various fields, from fashion to politics, to categorize trends.
- •In some contexts, decades are referred to as 'the twenties', 'the thirties', etc., instead of specific years.
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