Convert Picocandelas per square metre to Stilbs
Convert Picocandelas per square metre (pcd/m²) to Stilbs (sb) instantly and accurately.
Conversion Formula
sb = pcd/m² × 1.000000000e-16
About Picocandelas per square metre
The picocandela per square metre (pcd/m²) equals 10⁻¹² cd/m². A theoretical subunit for precision photometric standards and astrophysical brightness modelling. Even the darkest measurable surfaces in calibrated laboratories have luminance many orders of magnitude above this scale. Used only in radiometric standard traceability chains. 1 pcd/m² = 10⁻¹² cd/m².
About Stilbs
The stilb (sb) equals 1 cd/cm² = 10⁴ cd/m². The CGS luminance unit. A candle flame has luminance ~0.5-0.6 sb; a frosted incandescent bulb ~10 sb; a xenon short-arc lamp up to 170 000 sb. Named from the Greek στίλβω (to glitter). Found in pre-1970 photometry texts. 1 sb = 10⁴ cd/m².
Quick Reference Table
| Picocandelas per square metre (pcd/m²) | Stilbs (sb) |
|---|---|
| 1 pcd/m² | 1 × 10-16 sb |
| 2 pcd/m² | 2 × 10-16 sb |
| 5 pcd/m² | 5 × 10-16 sb |
| 10 pcd/m² | 1 × 10-15 sb |
| 25 pcd/m² | 2.5 × 10-15 sb |
| 50 pcd/m² | 5 × 10-15 sb |
| 100 pcd/m² | 1 × 10-14 sb |