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Discover the efficiency of converting Apostilb to Watt/sq. Cm/steradian at 555 Nm. This tool, developed by Newtum, offers a seamless experience for anyone looking to make precise light intensity conversions. Intrigued? Learn more about how this converter can meet your needs.
The Apostilb, abbreviated as asb, is a unit of luminance in the centimeter-gram-second (CGS) system. It measures the brightness of a surface and is defined as one lumen per square centimeter of a perfectly diffusing surface. Luminance, in this context, refers to the amount of visible light that passes through or is emitted from a specific area in a given direction. The Apostilb provides a quantitative way to describe how bright an object appears to the human eye, which is crucial in fields such as photography and lighting design.
Definition of Watt/sq. Cm/steradianWatt/sq. Cm/steradian is a unit of radiance, which measures the amount of radiant power emitted by a source in a specific direction per unit area. It is expressed in watts per square centimeter per steradian and is used to quantify the intensity of electromagnetic radiation, such as light. Radiance is an important concept in optics and radiometry, as it helps to describe how much energy is emitted, transmitted, or received by a surface. This unit is crucial for applications that involve the precise measurement of light and its effects, such as in optical engineering and astronomy.
| Apostilb (asb) | Watt/sq. Cm/steradian (W/cm²/sr) |
|---|---|
| 1 asb | 0.0001 W/cm²/sr |
| 10 asb | 0.001 W/cm²/sr |
| 50 asb | 0.005 W/cm²/sr |
| 100 asb | 0.01 W/cm²/sr |
| 200 asb | 0.02 W/cm²/sr |
| 500 asb | 0.05 W/cm²/sr |
| 1000 asb | 0.1 W/cm²/sr |
| 2000 asb | 0.2 W/cm²/sr |
| 5000 asb | 0.5 W/cm²/sr |
| 10000 asb | 1 W/cm²/sr |
1 asb = 0.0001 W/cm²/sr
1 W/cm²/sr = 10000 asb
Example 1:
convert 500 asb to W/cm²/sr:
500 asb = 500 × 0.0001 W/cm²/sr = 0.05 W/cm²/sr
Example 2:
convert 7500 asb to W/cm²/sr:
7500 asb = 7500 × 0.0001 W/cm²/sr = 0.75 W/cm²/sr
The Apostilb to Watt/sq. Cm/steradian (at 555 Nm) Converter emerged as a crucial tool in the field of optics and lighting. Initially, it was conceived to assist engineers and scientists in translating luminance values to radiance, particularly at the 555 Nm wavelength, which is significant due to its peak sensitivity in the human eye’s photopic vision. Over time, this conversion became essential for various applications, including lighting design, optical engineering, and scientific research. The tool has since evolved, offering more precision and ease of use for professionals across multiple disciplines.
The Apostilb to Watt/sq. Cm/steradian Converter plays a vital role in various real-life scenarios. It bridges the gap between luminance and radiance measurements, facilitating accurate light intensity analysis across multiple disciplines. Below, we delve into the practical applications of this converter.
Example 1:
Convert 200 asb to W/cm²/sr:
200 asb = 200 × 0.0001 W/cm²/sr = 0.02 W/cm²/sr
Example 2:
Convert 1500 asb to W/cm²/sr:
1500 asb = 1500 × 0.0001 W/cm²/sr = 0.15 W/cm²/sr