Convert Hefnerkerzen to Nanocandelas
Convert Hefnerkerzen (HK) to Nanocandelas (ncd) instantly and accurately.
Conversion Formula
ncd = HK × 920000000
About Hefnerkerzen
The Hefnerkerze (HK) equals 0.920 cd (DIN 5031 conventional value). The German photometric standard unit from 1884 to 1942, defined by the luminous intensity of a Hefner lamp burning amyl acetate. Used as the official German standard before the adoption of the international candela. 1 HK = 0.920 cd.
About Nanocandelas
The nanocandela (ncd) equals 10⁻⁹ cd. The scale of extremely faint bioluminescence: a single luciferin-luciferase reaction emits around 1-10 ncd; dark-adapted firefly flashes peak at a few hundred ncd. Also the range for cooled avalanche-photodiode sensitivity characterisation. 1 ncd = 10⁻⁹ cd.
Quick Reference Table
| Hefnerkerzen (HK) | Nanocandelas (ncd) |
|---|---|
| 1 HK | 920000000 ncd |
| 2 HK | 1.84 × 109 ncd |
| 5 HK | 4.6 × 109 ncd |
| 10 HK | 9.2 × 109 ncd |
| 25 HK | 2.3 × 1010 ncd |
| 50 HK | 4.6 × 1010 ncd |
| 100 HK | 9.2 × 1010 ncd |