CANDELA Meaning and
Definition
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Candela, abbreviated as cd, is the international unit of luminous intensity in the International System of Units (SI). It measures the amount of light emitted in a specific direction from a light source. The candela is defined as the luminous intensity of a light source that emits monochromatic radiation with a frequency of 540 terahertz and a radiant intensity of 1/683 watts per steradian in that direction.
The candela is crucial in the field of lighting and illumination, as it enables the measurement and comparison of the amount of light produced by various light sources. It takes into account the sensitivity of the human eye to different wavelengths of light, providing a standardization of light intensity measurements.
One common example that helps understand the concept of the candela is a standard wax candle. In the early days, candles were the primary light source, and the candela was defined as the intensity of light emitted by a typical candle. Modern measurements, however, utilize precise scientific instruments to measure luminous intensity accurately.
The candela is a fundamental unit and acts as a building block for other photometric units such as the lumen (unit of luminous flux), lux (unit of illuminance), and steradian (unit of solid angle). These units enable the quantification and assessment of light in various applications, including architecture, lighting design, photography, and scientific research.
Common Misspellings for CANDELA
Etymology of CANDELA
The word "candela" comes from Latin, where it means "candle". The Latin word "candela" itself is derived from "candere", which means "to shine". The term "candela" is commonly used in the context of physics and refers to the SI unit for luminous intensity.
Similar spelling words for CANDELA
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