Lumen Calculator 4+
Nitrio
專為 iPad 設計
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- $90.00
截圖
簡介
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.
新內容
版本 1.2
- Updated for the newest devices.
- Minor UI update.
- Minor bugs fixed.
App 隱私權
開發者「Nitrio」指出 App 的隱私權實務可能包含下方描述的資料處理。如需更多資訊，請參閱開發者的隱私權政策。
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資訊
- 供應商
- Tan Chia Ling
- 大小
- 8.5 MB
- 類別
- 工具程式
- 相容性
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- iPhone
- 需要 iOS 12.0 或以上版本。
- iPad
- 需要 iPadOS 12.0 或以上版本。
- iPod touch
- 需要 iOS 12.0 或以上版本。
- Mac
- 需要 macOS 11.0（或以上版本）以及配備 Apple M1（或以上版本）晶片的 Mac。
- Apple Vision
- 需要 visionOS 1.0 或以上版本。
- 語言
-
英文
- 年齡分級
- 4+
- Copyright
- © Tan Chia Ling
- 價格
- $90.00
支援
-
家人共享
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