apostilb to lumen/sq. meter/steradian
Please provide values below to convert apostilb to lumen/sq. meter/steradian, or change ↔.
apostilb
Definition: An older unit of luminance, equivalent to one candela per square meter.
Historyandorigin: The apostilb is an archaic unit used primarily in older lighting systems, and is largely obsolete today.
CurrentUse: Very rarely used today, except in specific historical contexts or when dealing with older lighting equipment.
funfact: This unit has been replaced by more standardized units such as the stilb or nit in modern applications.
lumen/sq. meter/steradian
Definition: A unit of luminance, expressing the amount of luminous flux per unit area and solid angle.
Historyandorigin: This combines the lumen (a unit of luminous flux) with square meters and steradians, the units for area and solid angle, respectively.
CurrentUse: Common in photometry, particularly when measuring light emitted from a source in a specific direction or angle.
funfact: This unit is useful for describing light distribution in projectors and lighting fixtures.
apostilb to lumen/sq. meter/steradian Conversion Table
| 1 apostilb | 0.3183098862 lumen/sq. meter/steradian |
| 2 apostilb | 0.6366197724 lumen/sq. meter/steradian |
| 3 apostilb | 0.9549296586 lumen/sq. meter/steradian |
| 5 apostilb | 1.5915494309 lumen/sq. meter/steradian |
| 10 apostilb | 3.1830988618 lumen/sq. meter/steradian |
| 50 apostilb | 15.915494309 lumen/sq. meter/steradian |
| 100 apostilb | 31.830988618 lumen/sq. meter/steradian |
| 1000 apostilb | 318.30988618 lumen/sq. meter/steradian |
| 10000 apostilb | 3183.0988618 lumen/sq. meter/steradian |
| 100000 apostilb | 31830.988618 lumen/sq. meter/steradian |
| 1000000 apostilb | 318309.88618 lumen/sq. meter/steradian |
How to Convert apostilb to lumen/sq. meter/steradian
1 apostilb = 0.3183098862 lumen/sq. meter/steradian
1 lumen/sq. meter/steradian = 3.1415926536 apostilb
we use cross multiplication method
apostilb → lumen/sq. meter/steradian
1 → 0.3183098862
1.5 → ?( suppose x)
=>1.5*0.3183098862=1*x
by simplifying
x=0.4774648293