Prahalad Singh
Jaipur Engineering College and Research Centre (JECRC), Jaipur
Prahalad Singh has created this Calculator and 100+ more calculators!
Payal Priya
Birsa Institute of Technology (BIT), Sindri
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11 Other formulas that you can solve using the same Inputs

Diagonal of a Rectangle when breadth and area are given
Diagonal=sqrt(((Area)^2/(Breadth)^2)+(Breadth)^2) GO
Diagonal of a Rectangle when length and area are given
Diagonal=sqrt(((Area)^2/(Length)^2)+(Length)^2) GO
Side of a Kite when other side and area are given
Side A=(Area*cosec(Angle Between Sides))/Side B GO
Perimeter of rectangle when area and rectangle length are given
Perimeter=(2*Area+2*(Length)^2)/Length GO
Buoyant Force
Buoyant Force=Pressure*Area GO
Perimeter of a square when area is given
Perimeter=4*sqrt(Area) GO
Diagonal of a Square when area is given
Diagonal=sqrt(2*Area) GO
Length of rectangle when area and breadth are given
Length=Area/Breadth GO
Breadth of rectangle when area and length are given
Breadth=Area/Length GO
Pressure when force and area are given
Pressure=Force/Area GO
Stress
Stress=Force/Area GO

1 Other formulas that calculate the same Output

Illumination by Lambert Cosine Law
Illumination=Total current/(Length*Length)*Cosine GO

Illumination Formula

Illumination=Luminous Flux/Area
E= Φv/A
More formulas
Luminous Flux GO
Heat Conduction GO
Heat Radiation GO
Dielectric Loss due to heating GO
Lumens GO
Candle Power GO
Solid Angle GO
Illumination by Lambert Cosine Law GO
Lamp Efficiency GO
Specific Consumption GO
Mean Horizontal Candle Power GO
Mean Spherical Candle Power GO
Mean Hemi-Spherical Candle Power GO
Luminous Intensity GO
luminance GO
Reduction Factor GO
Average kW input to the furnace GO
Number of lamps Required for Illumination GO
Depth of Penetration of eddy current into the charge GO
Energy Efficiency GO
Maintenance Factor GO
Utilization Factor GO
Depreciation Factor GO

What is the Inverse Square law of illumination?

This law states that the Illuminance (E) at any point on a plane perpendicular to the line joining the point and source is inversely proportional to the square of the distance between the source and plane.

How to Calculate Illumination?

Illumination calculator uses Illumination=Luminous Flux/Area to calculate the Illumination, The Illumination formula is defined as the number of lumens, falling on the surface, per unit area. It is denoted by symbol E and is measured in lumens per square meter or lux or meter-candela. Illumination and is denoted by E symbol.

How to calculate Illumination using this online calculator? To use this online calculator for Illumination, enter Luminous Flux ( Φv) and Area (A) and hit the calculate button. Here is how the Illumination calculation can be explained with given input values -> 0.2 = 10/50.

FAQ

What is Illumination?
The Illumination formula is defined as the number of lumens, falling on the surface, per unit area. It is denoted by symbol E and is measured in lumens per square meter or lux or meter-candela and is represented as E= Φv/A or Illumination=Luminous Flux/Area. Luminous Flux, or luminous power, is the measure of the perceived power of light and The area is the amount of two-dimensional space taken up by an object.
How to calculate Illumination?
The Illumination formula is defined as the number of lumens, falling on the surface, per unit area. It is denoted by symbol E and is measured in lumens per square meter or lux or meter-candela is calculated using Illumination=Luminous Flux/Area. To calculate Illumination, you need Luminous Flux ( Φv) and Area (A). With our tool, you need to enter the respective value for Luminous Flux and Area and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Illumination?
In this formula, Illumination uses Luminous Flux and Area. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Illumination=Total current/(Length*Length)*Cosine
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