Lux Converter
Convert Lux to Watt Sq Cm At 555 Nm 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).
Watt per Square Centimeter at 555 nmW/cm²
Target UnitThe watt per square centimeter at 555 nm is a unit of measurement used to quantify the intensity of light radiation at the specific wavelength of 555 nanometers, which corresponds closely to the peak sensitivity of the human eye. This unit expresses the amount of optical power (in watts) received per unit area (in square centimeters) at this wavelength. It is crucial for fields like photometry, where accurate measurements of light intensity are necessary for various applications, including lighting design and vision science.
Current Use
The watt per square centimeter at 555 nm is commonly used in industries that require precise measurements of light, such as photography, agriculture, and display technology. It helps in assessing the efficiency of light sources and understanding their impact on human vision. This unit is also crucial in research fields studying the effects of light on biological systems.
Fun Fact
The human eye is most sensitive to light at 555 nm, making it a key wavelength for illumination studies.
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📐Conversion Formula
= × 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.
💡 Fun Facts
- •The human eye can perceive light levels ranging from about 0.1 lux (moonlight) to over 100,000 lux (bright sunlight).
- •The term 'foot-candle', an older unit of illuminance, is equivalent to approximately 10.764 lux.
- •In photography, achieving the right lux levels can significantly impact the quality of images captured.
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Watt per Square Centimeter at 555 nm
illumination • Non-SI
Definition
The watt per square centimeter at 555 nm is a unit of measurement used to quantify the intensity of light radiation at the specific wavelength of 555 nanometers, which corresponds closely to the peak sensitivity of the human eye. This unit expresses the amount of optical power (in watts) received per unit area (in square centimeters) at this wavelength. It is crucial for fields like photometry, where accurate measurements of light intensity are necessary for various applications, including lighting design and vision science.
History & Origin
The watt, named after James Watt, was adopted as a measurement of power in the late 19th century. The concept of measuring light intensity emerged with the development of photometric standards, particularly in the early 20th century when the sensitivity of the human eye was better understood. The specification of measurements at 555 nm became relevant as this wavelength represents the peak sensitivity of human vision, making it a standard reference in both scientific and practical applications in illumination.
Etymology: The term 'watt' derives from the name of Scottish inventor James Watt, who made significant improvements to the steam engine during the Industrial Revolution.
Current Use
The watt per square centimeter at 555 nm is commonly used in industries that require precise measurements of light, such as photography, agriculture, and display technology. It helps in assessing the efficiency of light sources and understanding their impact on human vision. This unit is also crucial in research fields studying the effects of light on biological systems.
💡 Fun Facts
- •The human eye is most sensitive to light at 555 nm, making it a key wavelength for illumination studies.
- •The watt was originally defined as the power needed to lift 550 pounds one foot in one second.
- •The concept of measuring light intensity at specific wavelengths has led to innovations in various industries, including health and agriculture.
📏 Real-World Examples
🔗 Related Units
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Frequently Asked Questions
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