Convert Lamberts to Stilbs
Convert Lamberts (L) to Stilbs (sb) instantly and accurately.
Conversion Formula
sb = L × 0.3183098862
About Lamberts
The lambert (L) equals 10⁴/π cd/m² ≈ 3 183 cd/m², the luminance of a perfect diffuse surface emitting 1 lumen per square centimetre. The CGS practical luminance unit. An incandescent lamp globe at 3 200 K has luminance ~1 L; a clear sky is ~0.94 L. Superseded by cd/m² in SI photometry. 1 L = 10⁴/π cd/m².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
| Lamberts (L) | Stilbs (sb) |
|---|---|
| 1 L | 0.31831 sb |
| 2 L | 0.63662 sb |
| 5 L | 1.59155 sb |
| 10 L | 3.1831 sb |
| 25 L | 7.95775 sb |
| 50 L | 15.9155 sb |
| 100 L | 31.831 sb |