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Illuminance from Luminous Intensity

Illuminance is the total luminous flux incident on a surface, per unit area.

Illuminance equals luminous intensity divided by distance squared.

Formula

QuantityVariable[Subscript["E", "v"], "Illuminance"] == QuantityVariable["I", "LuminousIntensity"]/QuantityVariable["r", "Distance"]^2

symbol description physical quantity
Ev illuminance "Illuminance"
I luminous intensity "LuminousIntensity"
r distance "Distance"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Illuminance from Luminous Intensity"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ResourceObject["Illuminance from Luminous Intensity"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[ ResourceObject[ "Illuminance from Luminous Intensity"], {QuantityVariable[ \!\(\*SubscriptBox[\("E"\), \("v"\)]\),"Illuminance"] -> Quantity[1, "Lux"], QuantityVariable["I","LuminousIntensity"] -> Quantity[1, "Candelas"]}]
Out[3]=

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