Lumen Calculator 4+
Nitrio
专为 iPad 设计
-
- ¥22.00
截屏
简介
The Lumen Calculator is a physics/math calculator designed to swiftly and easily convert between lumens, lux, and candelas.
Features:
- Instant calculation
- Results are copyable to other apps
- Formulas included as references
- Supports up to 16 decimal places
- Supports various units for each input
Definitions:
- Lumens: Unit of luminous flux, representing the total amount of light emitted by a source.
- Lux: Measure of surface illumination, indicating how much light is received by a surface.
- Candelas: SI units of luminous intensity, representing light emitted from a source in a particular direction per steradian.
Note:
Candelas measure the light emitted in a specific direction, while lux measures 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.
Formulas:
1. Lumens = Candelas * Ω
(For a specific angle)
2. Lumens = Candelas * 2π * [1 - cos(θ/2)]
3. Lux = Lumens / Area
4. Lux = Candela / Distance²
Where:
Ω = 2π * [1 - cos(θ/2)]
Ω = 4π
Thanks for your support, and please visit nitrio.com for more apps for your iOS devices.
新内容
版本 1.2
- Updated for the newest devices.
- Minor UI update.
- Minor bugs fixed.
App 隐私
开发者“Nitrio”已表明该 App 的隐私规范可能包括了下述的数据处理方式。有关更多信息，请参阅开发者隐私政策。
未收集数据
开发者不会从此 App 中收集任何数据。
隐私处理规范可能基于你使用的功能或你的年龄等因素而有所不同。了解更多
信息
- 提供者
- Tan Chia Ling
- 大小
- 8.5 MB
- 类別
- 工具
- 兼容性
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- iPhone
- 设备需装有 iOS 12.0 或更高版本。
- iPad
- 设备需装有 iPadOS 12.0 或更高版本。
- iPod touch
- 设备需装有 iOS 12.0 或更高版本。
- Mac
- 需要 macOS 11.0 或更高版本以及装有 Apple M1 或更高版本芯片的 Mac。
- Apple Vision
- 设备需装有 visionOS 1.0 或更高版本。
- 语言
-
英语
- 年龄分级
- 4+
- Copyright
- © Tan Chia Ling
- 价格
- ¥22.00
支持
-
家人共享
启用“家人共享”，即可让最多 6 个家庭成员使用此 App。