Stilb (sb)
CGS unit of luminance: one candela per square centimeter, exactly 10,000 cd/m².
What is a stilb?
- Symbol
- sb
- Quantity
- Luminance
- Unit system
- CGS
- Definition
- CGS unit of luminance: one candela per square centimeter, exactly 10,000 cd/m².
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
An older CGS unit found in physics texts and older data on the brightness of lamps and light sources.
Stilb in other luminance units
- 1 sb = 10000 cd/m²Candela per square meter (nit)
- 1 sb = 10 kcd/m²Kilocandela per square meter
- 1 sb = 929.0304 cd/ft²Candela per square foot
- 1 sb = 6.4516 cd/in²Candela per square inch
- 1 sb ≈ 2918.63508 fLFoot-lambert
- 1 sb ≈ 3.141592654 LaLambert
- 1 sb ≈ 31415.92654 asbApostilb
Stilb quick reference
| Stilb | Candela per square meter (nit) | Foot-lambert | Kilocandela per square meter |
|---|---|---|---|
| 1 sb | = 10000 cd/m² | ≈ 2918.63508 fL | = 10 kcd/m² |
| 10 sb | = 100000 cd/m² | ≈ 29186.3508 fL | = 100 kcd/m² |
| 100 sb | = 1000000 cd/m² | ≈ 291863.508 fL | = 1000 kcd/m² |
| 1000 sb | = 10000000 cd/m² | ≈ 2918635.08 fL | = 10000 kcd/m² |
Where the stilb fits
The next smaller luminance unit is the lambert (La). 1 sb ≈ 3.141592654 La, and 1 La ≈ 0.3183098862 sb.
Frequently asked questions
- How many candelas per square meter are in one stilb?
- One stilb = 10000 cd/m² (candelas per square meter).
- How many foot-lamberts are in one stilb?
- One stilb ≈ 2918.63508 fL (foot-lamberts).
- How many kilocandelas per square meter are in one stilb?
- One stilb = 10 kcd/m² (kilocandelas per square meter).