Lux Converter
Convert Lux to Candela Steradian Sq Meter and more ⢠37 conversions
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Unit Explanations
Luxlx
Source UnitThe lux (symbol: lx) is the SI unit of illuminance and luminous emittance, defined as one lumen per square meter. This unit quantifies the amount of visible light that illuminates a surface area, providing an essential measure for lighting design and assessment. The lux is integral to various fields, including photography, cinematography, and interior design, as it helps determine the adequacy of lighting in spaces. A well-lit environment typically requires illuminance levels ranging from 100 to 1000 lux, depending on the activity being performed. Thus, the lux not only conveys the intensity of light but also directly correlates with human visual comfort and productivity.
Current Use
The lux is widely used in various industries to ensure that lighting conditions meet specific standards for safety, comfort, and productivity. In architectural lighting design, lux levels are meticulously calculated to optimize illumination in spaces such as offices, schools, and hospitals. The film and photography industries rely on lux measurements to ensure proper lighting conditions for shoots, while horticulture utilizes lux for assessing light requirements for plant growth. In the automotive industry, lux is crucial for assessing headlight brightness and visibility. Countries around the world, including the United States, Germany, and Japan, apply lux standards in building codes and regulations to ensure adequate lighting in public and private spaces. Regulatory bodies often specify minimum lux levels for various environments, ensuring compliance with safety and quality standards.
Fun Fact
The human eye can perceive light levels ranging from about 0.1 lux (moonlight) to over 100,000 lux (bright sunlight).
Candela Steradian Square Metercd¡sr¡m²
Target UnitThe candela steradian square meter (cd¡sr¡m²) describes the luminous intensity emitted by a point source in a specific direction, normalized over a unit solid angle (steradian) and unit area (square meter). It quantifies how much luminous flux is emitted in a given direction relative to the area from which it emanates, providing a comprehensive understanding of light distribution and intensity in three-dimensional space. This unit is essential for applications in lighting design and photometry.
Current Use
The candela steradian square meter is widely used in fields such as lighting design, architecture, and photography, where accurate measurements of light intensity and distribution are critical. It assists designers in creating environments that optimize illumination while ensuring comfort and visibility. It's also used in safety standards for lighting in public spaces and workplaces to enhance visibility and reduce accidents.
Fun Fact
The candela is one of the seven base units in the International System of Units (SI).
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= Ă 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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Lux
illumination ⢠SI Unit
Definition
The lux (symbol: lx) is the SI unit of illuminance and luminous emittance, defined as one lumen per square meter. This unit quantifies the amount of visible light that illuminates a surface area, providing an essential measure for lighting design and assessment. The lux is integral to various fields, including photography, cinematography, and interior design, as it helps determine the adequacy of lighting in spaces. A well-lit environment typically requires illuminance levels ranging from 100 to 1000 lux, depending on the activity being performed. Thus, the lux not only conveys the intensity of light but also directly correlates with human visual comfort and productivity.
History & Origin
The concept of measuring light dates back to ancient civilizations, but the formal introduction of the lux occurred in the 20th century. The unit was officially defined in 1948 during the International Conference on Weights and Measures in Paris, where it was adopted as part of the International System of Units (SI). Before the lux, illuminance was often measured using different units like foot-candles, which were less standardized. The establishment of the lux aimed to create a uniform measurement standard for scientific and practical applications in lighting.
Etymology: The term 'lux' comes from the Latin word for 'light'.
Current Use
The lux is widely used in various industries to ensure that lighting conditions meet specific standards for safety, comfort, and productivity. In architectural lighting design, lux levels are meticulously calculated to optimize illumination in spaces such as offices, schools, and hospitals. The film and photography industries rely on lux measurements to ensure proper lighting conditions for shoots, while horticulture utilizes lux for assessing light requirements for plant growth. In the automotive industry, lux is crucial for assessing headlight brightness and visibility. Countries around the world, including the United States, Germany, and Japan, apply lux standards in building codes and regulations to ensure adequate lighting in public and private spaces. Regulatory bodies often specify minimum lux levels for various environments, ensuring compliance with safety and quality standards.
đĄ Fun Facts
- â˘The human eye can perceive light levels ranging from about 0.1 lux (moonlight) to over 100,000 lux (bright sunlight).
- â˘The term 'foot-candle', an older unit of illuminance, is equivalent to approximately 10.764 lux.
- â˘In photography, achieving the right lux levels can significantly impact the quality of images captured.
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Candela Steradian Square Meter
illumination ⢠Non-SI
Definition
The candela steradian square meter (cd¡sr¡m²) describes the luminous intensity emitted by a point source in a specific direction, normalized over a unit solid angle (steradian) and unit area (square meter). It quantifies how much luminous flux is emitted in a given direction relative to the area from which it emanates, providing a comprehensive understanding of light distribution and intensity in three-dimensional space. This unit is essential for applications in lighting design and photometry.
History & Origin
The concept of measuring light intensity dates back to the early studies of optics and photometry, with significant contributions from scientists like Sir Isaac Newton and Johann Heinrich Lambert. The modern definition of the candela was established in the 20th century, particularly during the 1979 redefinition of the metric system, which formalized the candela as the luminous intensity of a source emitting monochromatic radiation at a frequency of 540 Ă 10^12 Hz, corresponding to a radiant intensity of 1/683 watt per steradian.
Etymology: The term 'candela' originates from the Latin word for 'candle', which is a historical unit of light intensity, while 'steradian' derives from the Greek words 'stereos' meaning solid and 'radius' meaning ray.
Current Use
The candela steradian square meter is widely used in fields such as lighting design, architecture, and photography, where accurate measurements of light intensity and distribution are critical. It assists designers in creating environments that optimize illumination while ensuring comfort and visibility. It's also used in safety standards for lighting in public spaces and workplaces to enhance visibility and reduce accidents.
đĄ Fun Facts
- â˘The candela is one of the seven base units in the International System of Units (SI).
- â˘The term 'steradian' is derived from the relationship between a sphere's surface area and its radius, representing a three-dimensional angle.
- â˘In terms of light perception, the human eye is most sensitive to light at a wavelength of about 555 nm, which corresponds to the peak efficacy of the candela.
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Frequently Asked Questions
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