Candela Square Meter Converter
Convert Candela Square Meter to Watt Sq Cm Steradian At 555 Nm and more • 19 conversions
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Unit Explanations
Candela per Square Metercd/m²
Source UnitThe candela per square meter (cd/m²), commonly referred to as 'nits', is a derived unit of luminance in the International System of Units (SI). It quantifies the luminous intensity emitted by a surface in a given direction per unit area. Specifically, it defines how much light is emitted from a surface that has a luminous intensity of one candela and covers an area of one square meter. This unit is crucial in fields such as photography, display technology, and lighting design, as it allows for the assessment of brightness and visual comfort. The concept of luminance is fundamental in understanding how light interacts with surfaces and affects human perception. It plays a vital role in optimizing lighting conditions and evaluating the performance of displays and lighting fixtures in various environments.
Current Use
The candela per square meter is widely used across various industries, including electronics, automotive, architecture, and photography. In the electronics industry, it is crucial for evaluating display brightness in televisions, computer monitors, and smartphones, influencing consumer choices and design standards. In the automotive sector, luminance standards ensure that dashboard displays and exterior lights meet safety regulations. Architectural lighting design relies on cd/m² to create visually appealing environments while ensuring adequate illumination levels. In photography, achieving the correct luminance is essential for proper exposure and image quality. Countries such as the United States, Germany, and Japan have adopted this unit in their standards for light measurement, contributing to a global understanding of luminance.
Fun Fact
The term 'nit' is derived from the Latin word 'nitere', meaning 'to shine'.
Watt per Square Centimeter Steradian at 555 nmW/cm²·sr
Target UnitThe watt per square centimeter steradian at 555 nm is a measure of luminous intensity that quantifies the amount of light emitted in a specific direction per unit area within a solid angle. It reflects the sensitivity of human vision at 555 nm, which is the peak sensitivity of photopic vision. This unit is crucial in photometry, particularly when assessing the brightness of light sources and their illumination effects on surfaces. The watt per square centimeter steradian at this wavelength is used to evaluate light's visual impact in various applications, from display technologies to architectural lighting design.
Current Use
Today, the watt per square centimeter steradian at 555 nm is primarily used in fields like lighting design, optical engineering, and display technologies. It allows for the quantification of light intensity in a way that correlates closely with human visual perception, making it essential for tasks such as designing energy-efficient lighting solutions and optimizing visual displays for consumer electronics. This unit is also relevant in scientific research involving photometry and vision science, where understanding light's effects on human perception is crucial.
Fun Fact
The human eye is most sensitive to light at 555 nm, which corresponds to a greenish-yellow color.
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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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Candela per Square Meter
luminance • Non-SI
Definition
The candela per square meter (cd/m²), commonly referred to as 'nits', is a derived unit of luminance in the International System of Units (SI). It quantifies the luminous intensity emitted by a surface in a given direction per unit area. Specifically, it defines how much light is emitted from a surface that has a luminous intensity of one candela and covers an area of one square meter. This unit is crucial in fields such as photography, display technology, and lighting design, as it allows for the assessment of brightness and visual comfort. The concept of luminance is fundamental in understanding how light interacts with surfaces and affects human perception. It plays a vital role in optimizing lighting conditions and evaluating the performance of displays and lighting fixtures in various environments.
History & Origin
The candela per square meter originated from the need to measure light's visual impact on surfaces. In the early 20th century, the understanding of light properties and their effects on human vision was still developing. The International Commission on Illumination (CIE) conducted extensive research to define standards for various light measurements. The candela, established as the SI base unit of luminous intensity in 1979, became integral to this system. The derivation of luminance from the candela marked a significant step in quantifying light's interaction with surfaces, thereby enhancing the precision of lighting design and evaluation.
Etymology: The term 'candela' is derived from the Latin word for 'candle', reflecting the historical use of candles as a standard light source.
Current Use
The candela per square meter is widely used across various industries, including electronics, automotive, architecture, and photography. In the electronics industry, it is crucial for evaluating display brightness in televisions, computer monitors, and smartphones, influencing consumer choices and design standards. In the automotive sector, luminance standards ensure that dashboard displays and exterior lights meet safety regulations. Architectural lighting design relies on cd/m² to create visually appealing environments while ensuring adequate illumination levels. In photography, achieving the correct luminance is essential for proper exposure and image quality. Countries such as the United States, Germany, and Japan have adopted this unit in their standards for light measurement, contributing to a global understanding of luminance.
💡 Fun Facts
- •The term 'nit' is derived from the Latin word 'nitere', meaning 'to shine'.
- •A common household candle emits approximately 1 candela of light intensity.
- •In 2020, the global market for display luminance testing equipment was estimated to exceed $1 billion.
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Watt per Square Centimeter Steradian at 555 nm
luminance • Non-SI
Definition
The watt per square centimeter steradian at 555 nm is a measure of luminous intensity that quantifies the amount of light emitted in a specific direction per unit area within a solid angle. It reflects the sensitivity of human vision at 555 nm, which is the peak sensitivity of photopic vision. This unit is crucial in photometry, particularly when assessing the brightness of light sources and their illumination effects on surfaces. The watt per square centimeter steradian at this wavelength is used to evaluate light's visual impact in various applications, from display technologies to architectural lighting design.
History & Origin
The watt, named after James Watt, was initially defined in the context of mechanical power in the late 18th century. As science advanced, particularly in the fields of optics and photometry, the need for precise measurements of light intensity emerged. The integration of the steradian and the specific wavelength of 555 nm into this unit reflects the evolution of light measurement practices, particularly as they relate to human visual perception and the development of standards in the 20th century.
Etymology: The term 'watt' originates from the surname of James Watt, while 'steradian' combines 'stereon,' meaning solid, and 'adian,' a suffix used in geometry.
Current Use
Today, the watt per square centimeter steradian at 555 nm is primarily used in fields like lighting design, optical engineering, and display technologies. It allows for the quantification of light intensity in a way that correlates closely with human visual perception, making it essential for tasks such as designing energy-efficient lighting solutions and optimizing visual displays for consumer electronics. This unit is also relevant in scientific research involving photometry and vision science, where understanding light's effects on human perception is crucial.
💡 Fun Facts
- •The human eye is most sensitive to light at 555 nm, which corresponds to a greenish-yellow color.
- •The concept of steradians is essential for three-dimensional geometry and is used in various scientific fields beyond photometry.
- •The term 'watt' was first used in the 1880s, but the application of this term to light measurement is a more recent development.
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Frequently Asked Questions
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