Illuminance Calculator

✖Magnetic flux is the number of magnetic field lines passing through a surface.ⓘ Magnetic Flux [Φ_m]			+10% -10%
✖Surface Area is the area of the surface on which light is incident.ⓘ Surface Area [A]			+10% -10%

✖Illumination is defined as the number of lumens, falling on the surface, per unit area.ⓘ Illuminance [E]

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Formula

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Illuminance

Formula

`"E" = "Φ"_{"m"}/"A"`

Example

`"0.124lx"="1.24Wb"/"10m²"`

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Illuminance Solution

STEP 0: Pre-Calculation Summary

Formula Used

Illumination = Magnetic Flux/Surface Area
E = Φ_m/A
This formula uses 3 Variables

Variables Used

Illumination - (Measured in Lux) - Illumination is defined as the number of lumens, falling on the surface, per unit area.
Magnetic Flux - (Measured in Weber) - Magnetic flux is the number of magnetic field lines passing through a surface.
Surface Area - (Measured in Square Meter) - Surface Area is the area of the surface on which light is incident.

STEP 1: Convert Input(s) to Base Unit

Magnetic Flux: 1.24 Weber --> 1.24 Weber No Conversion Required
Surface Area: 10 Square Meter --> 10 Square Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

E = Φ_m/A --> 1.24/10

Evaluating ... ...

E = 0.124

STEP 3: Convert Result to Output's Unit

0.124 Lux --> No Conversion Required

FINAL ANSWER

0.124 Lux <-- Illumination

(Calculation completed in 00.020 seconds)

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Credits

Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

Shobhit Dimri has created this Calculator and 900+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Calculator and 1900+ more calculators!

< 14 Light Measurement Calculators

Luminous Intensity in Direction at Angle

Go Luminous Intensity at Angle = Luminance Normal to Surface*Surface Area*cos(Angle to Normal)

Transmission Factor

Go Transmission Factor = Luminous Flux Transmitted by Object/Luminous Flux Incident upon Object

Luminous Intensity in Direction Normal to Surface

Go Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface

Reflected Luminous Flux

Go Reflected Luminous Flux = Incident Luminous Flux*Reflection Factor

Incident Luminous Flux

Go Incident Luminous Flux = Reflected Luminous Flux/Reflection Factor

Area Projected at solid angle

Go Area Projected at Solid Angle = Magnetic Flux/Luminous Intensity

Intensity on Solid Angle

Go Luminous Intensity = Magnetic Flux/Area Projected at Solid Angle

Flux at Solid Angle

Go Magnetic Flux = Luminous Intensity*Area Projected at Solid Angle

Area of Bulb

Go Area of Bulb = Area of Capillary Tube*Length of Capillary Tube

Light flux

Go Flux Light = Photoelectric Current/Photoelectric Sensitivity

Illuminance

Go Illumination = Magnetic Flux/Surface Area

Area affected by Light Incident

Go Surface Area = Power Light/Irradiation

Irradiation

Go Irradiation = Power Light/Surface Area

Light Power

Go Power Light = Surface Area*Irradiation

Illuminance Formula

Illumination = Magnetic Flux/Surface Area
E = Φ_m/A

What is solid angle in radiation?

Generally speaking, the solid angle is that fraction of the surface of a sphere that is seen by an observer positioned at the center of a sphere. The ratio of the area of this small surface being observed from the center of the sphere to the square of the radius of the sphere represents the solid angle.

How to Calculate Illuminance?

Illuminance calculator uses Illumination = Magnetic Flux/Surface Area to calculate the Illumination, The Illuminance formula is defined as is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception. Illumination is denoted by E symbol.

How to calculate Illuminance using this online calculator? To use this online calculator for Illuminance, enter Magnetic Flux (Φ_m) & Surface Area (A) and hit the calculate button. Here is how the Illuminance calculation can be explained with given input values -> 0.00039 = 1.24/10.

FAQ

What is Illuminance?

The Illuminance formula is defined as is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception and is represented as E = Φ_m/A or Illumination = Magnetic Flux/Surface Area. Magnetic flux is the number of magnetic field lines passing through a surface & Surface Area is the area of the surface on which light is incident.

How to calculate Illuminance?

The Illuminance formula is defined as is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception is calculated using Illumination = Magnetic Flux/Surface Area. To calculate Illuminance, you need Magnetic Flux (Φ_m) & Surface Area (A). With our tool, you need to enter the respective value for Magnetic Flux & Surface Area and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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