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## Intensity of Light when modified Illuminance of Allard's Law is Given Solution

STEP 0: Pre-Calculation Summary
Formula Used
intensity_of_light = ((Illuminance of the Eye at Threshold/Visual Range^-2)/exp(-Extinction Coefficient *Visual Range))+(Luminance of the Background of the Light*Area of the Light Source)
I = ((Eth/R^-2)/exp(-σ*R))+(Lo*A)
This formula uses 1 Constants, 1 Functions, 5 Variables
Constants Used
e - Napier's constant Value Taken As 2.71828182845904523536028747135266249
Functions Used
exp - Exponential function, exp(Number)
Variables Used
Illuminance of the Eye at Threshold - Illuminance of the Eye at Threshold (Measured in Lux)
Visual Range - Visual Range at which various lightings must be seen in order to provide the required visual segment. (Measured in Meter)
Extinction Coefficient - Extinction Coefficient Meteorological
Luminance of the Background of the Light - Luminance of the Background of the Light (Measured in Lux)
Area of the Light Source - Area of the Light Source considered (Measured in Square Meter)
STEP 1: Convert Input(s) to Base Unit
Illuminance of the Eye at Threshold: 100 Lux --> 100 Lux No Conversion Required
Visual Range: 150 Meter --> 150 Meter No Conversion Required
Extinction Coefficient : 0.016 --> No Conversion Required
Luminance of the Background of the Light: 100 Lux --> 100 Lux No Conversion Required
Area of the Light Source: 10 Square Meter --> 10 Square Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
I = ((Eth/R^-2)/exp(-σ*R))+(Lo*A) --> ((100/150^-2)/exp(-0.016*150))+(100*10)
Evaluating ... ...
I = 24803146.8564436
STEP 3: Convert Result to Output's Unit
24803146.8564436 Candela --> No Conversion Required
FINAL ANSWER
24803146.8564436 Candela <-- Intensity of light
(Calculation completed in 00.047 seconds)

## < 3 Other formulas that you can solve using the same Inputs

Area of the Light when modified Illuminance of Allard's Law is Given
area_of_light_source = -(((Illuminance of the Eye at Threshold/Visual Range^-2)/exp(-Extinction Coefficient *Visual Range))-Intensity of light)/Luminance of the Background of the Light Go
Modified Version of Allard's Law
illuminance_of_eye_threshold = ((Intensity of light-Luminance of the Background of the Light*Area of the Light Source)*exp(-Extinction Coefficient *Visual Range))*Visual Range^-2 Go
Luminance of the background of the Light when modified Illuminance of Allard's Law is Given
luminance_of_background = -(((Illuminance of the Eye at Threshold/Visual Range^-2)/exp(-Extinction Coefficient *Visual Range))-Intensity of light)/Area of the Light Source Go

## < 2 Other formulas that calculate the same Output

Intensity when Illumination is Given
intensity_of_light = (Illumination *Distance Traveled^2)/Transmissivity^Distance Traveled Go
Intensity of light in photo-electric effect
intensity_of_light = Number of photons/(Area*Time) Go

### Intensity of Light when modified Illuminance of Allard's Law is Given Formula

intensity_of_light = ((Illuminance of the Eye at Threshold/Visual Range^-2)/exp(-Extinction Coefficient *Visual Range))+(Luminance of the Background of the Light*Area of the Light Source)
I = ((Eth/R^-2)/exp(-σ*R))+(Lo*A)

## What is Allard's law for illumination?

Allard's law for illumination is a formula relating the illuminance produced on a normal surface at a given distance from a point source of light, the intensity of the light and the degree of transparency of the atmosphere (assumed uniform). I is the intensity of the incident light in the direction of measurement.

## How to Calculate Intensity of Light when modified Illuminance of Allard's Law is Given?

Intensity of Light when modified Illuminance of Allard's Law is Given calculator uses intensity_of_light = ((Illuminance of the Eye at Threshold/Visual Range^-2)/exp(-Extinction Coefficient *Visual Range))+(Luminance of the Background of the Light*Area of the Light Source) to calculate the Intensity of light, The Intensity of Light when modified Illuminance of Allard's Law is Given is defined as the quantity of visible light that is emitted in unit time per unit solid angle. Intensity of light and is denoted by I symbol.

How to calculate Intensity of Light when modified Illuminance of Allard's Law is Given using this online calculator? To use this online calculator for Intensity of Light when modified Illuminance of Allard's Law is Given, enter Illuminance of the Eye at Threshold (Eth), Visual Range (R), Extinction Coefficient (σ), Luminance of the Background of the Light (Lo) and Area of the Light Source (A) and hit the calculate button. Here is how the Intensity of Light when modified Illuminance of Allard's Law is Given calculation can be explained with given input values -> 2.480E+7 = ((100/150^-2)/exp(-0.016*150))+(100*10).

### FAQ

What is Intensity of Light when modified Illuminance of Allard's Law is Given?
The Intensity of Light when modified Illuminance of Allard's Law is Given is defined as the quantity of visible light that is emitted in unit time per unit solid angle and is represented as I = ((Eth/R^-2)/exp(-σ*R))+(Lo*A) or intensity_of_light = ((Illuminance of the Eye at Threshold/Visual Range^-2)/exp(-Extinction Coefficient *Visual Range))+(Luminance of the Background of the Light*Area of the Light Source). Illuminance of the Eye at Threshold, Visual Range at which various lightings must be seen in order to provide the required visual segment, Extinction Coefficient Meteorological , Luminance of the Background of the Light and Area of the Light Source considered.
How to calculate Intensity of Light when modified Illuminance of Allard's Law is Given?
The Intensity of Light when modified Illuminance of Allard's Law is Given is defined as the quantity of visible light that is emitted in unit time per unit solid angle is calculated using intensity_of_light = ((Illuminance of the Eye at Threshold/Visual Range^-2)/exp(-Extinction Coefficient *Visual Range))+(Luminance of the Background of the Light*Area of the Light Source). To calculate Intensity of Light when modified Illuminance of Allard's Law is Given, you need Illuminance of the Eye at Threshold (Eth), Visual Range (R), Extinction Coefficient (σ), Luminance of the Background of the Light (Lo) and Area of the Light Source (A). With our tool, you need to enter the respective value for Illuminance of the Eye at Threshold, Visual Range, Extinction Coefficient , Luminance of the Background of the Light and Area of the Light Source 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 Intensity of light?
In this formula, Intensity of light uses Illuminance of the Eye at Threshold, Visual Range, Extinction Coefficient , Luminance of the Background of the Light and Area of the Light Source. We can use 2 other way(s) to calculate the same, which is/are as follows -
• intensity_of_light = Number of photons/(Area*Time)
• intensity_of_light = (Illumination *Distance Traveled^2)/Transmissivity^Distance Traveled Let Others Know
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