Candle (International) to Hefner Candle Conversion
Convert between Candle (International) and Hefner Candle quickly and accurately.
How to Convert Candle (International) to Hefner Candle
Conversion Formula
Example
Convert 15 c to hefner candle:
Unit Information
Learn about the luminous intensity units you're converting between
Candle (International)
c
Definition
The Candle (International) is the SI base unit of luminous intensity, defined as the luminous intensity in a given direction of a source that emits monochromatic radiation of frequency 540×10¹² hertz and has a radiant intensity in that direction of 1/683 watt per steradian.
History/Origin
The international candle was established in 1948 as part of the International System of Units (SI). It replaced earlier candle standards and provides a precise, reproducible definition based on fundamental physical constants, ensuring consistency in light measurement worldwide.
Current Use
Widely used as the standard unit for measuring luminous intensity in scientific research, lighting design, and photometric applications. It is essential for calibrating light sources, designing lighting systems, and ensuring accurate light measurements in various industries.
Multiplier
1
Offset
0
Hefner Candle
hefner candle
Definition
The Hefner Candle is a unit of luminous intensity based on the light output of a Hefner lamp burning amyl acetate. It was developed as a standardized reference for luminous intensity measurements and was widely used in German-speaking countries before the adoption of international standards.
History/Origin
Named after Friedrich von Hefner-Alteneck, who developed this standard in 1884. It was based on the light output of a specific lamp burning amyl acetate and provided a reproducible standard for photometric measurements in Germany and other German-speaking regions.
Current Use
Primarily of historical interest, though may still be referenced in older German technical specifications or photometric literature. It has been largely replaced by the international candle standard for modern applications and scientific measurements.
Multiplier
0.9
Offset
0
Candle (International) to Hefner Candle Conversion Table
| Candle (International) [c] | Hefner Candle [hefner candle] |
|---|---|
| 1 c | 1.111111 hefner candle |
| 10 c | 11.111111 hefner candle |
| 25 c | 27.777778 hefner candle |
| 50 c | 55.555556 hefner candle |
| 100 c | 111.111111 hefner candle |
| 0 c | 0E+0 hefner candle |
| -10 c | -11.111111 hefner candle |
| -40 c | -44.444444 hefner candle |
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