Convert Hefnerkerzen to Gigacandelas
Convert Hefnerkerzen (HK) to Gigacandelas (Gcd) instantly and accurately.
Conversion Formula
Gcd = HK × 9.200000000e-10
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 Gigacandelas
The gigacandela (Gcd) equals 10⁹ cd. The scale for extremely powerful directed beams and for astrophysical luminous intensity comparisons. A nuclear fireball at peak emission approaches this range; high-power pulsed laser outputs in the visible spectrum can reach Gcd-level peak intensity in the beam axis. 1 Gcd = 10⁹ cd.
Quick Reference Table
| Hefnerkerzen (HK) | Gigacandelas (Gcd) |
|---|---|
| 1 HK | 9.2 × 10-10 Gcd |
| 2 HK | 1.84 × 10-9 Gcd |
| 5 HK | 4.6 × 10-9 Gcd |
| 10 HK | 9.2 × 10-9 Gcd |
| 25 HK | 2.3 × 10-8 Gcd |
| 50 HK | 4.6 × 10-8 Gcd |
| 100 HK | 9.2 × 10-8 Gcd |