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Lumen Calculator

Lumen Calculator are physic/math calculator to converts between lumens, lux and candelas fast and easy

Lumen Calculator are physic/math calculator to converts between lumens, lux and candelas fast and easy

Lumen Calculator

by Nitrio
Lumen Calculator
Lumen Calculator
Lumen Calculator

What is it about?

Lumen Calculator are physic/math calculator to converts between lumens, lux and candelas fast and easy.

Lumen Calculator

App Details

Version
1.1
Rating
(1)
Size
8Mb
Genre
Utilities Productivity
Last updated
October 23, 2020
Release date
July 24, 2018
More info

App Screenshots

Lumen Calculator screenshot-0
Lumen Calculator screenshot-1
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Lumen Calculator screenshot-9

App Store Description

Lumen Calculator are physic/math calculator to converts between lumens, lux and candelas fast and easy.

Features:
- Instant calculation
- Result are copy able to other app
- Formula are include as reference
- Support up to 16 decimal place
- Support various unit for each input

Lumens - unit of luminous flux, or, the total amount of light emitted by a source.
Lux - measure of the illumination of the surface, or, how much light is received by a surface.
Candelas - SI units of luminous intensity. It is the light emitted from a source in a particular direction, that is - per steradian.

Note:
Candelas measure the light emitted in a particular direction, while lux measure the light received per unit area.
One steradian, the area of the receiving surface is equal to the squared distance between the source and the receiver.

Formula:
lumens = candelas * Ω
For specific angle
lumens = candelas * 2π * [1 - cos(θ/2)]
lux = lumens / area
lux = candela / distance²

Ω = 2π * [1 - cos(θ/2)]
Ω = 4π

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