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How to Convert from Phot [ph] to Flame
Convert illumination values from phot (ph), an older unit representing high levels of illuminance, to flame, an informal light descriptor used in qualitative contexts.
Please check your input. It must be a valid numeric value.
Phot [ph] to Flame Conversion Table
| Phot [ph] | Flame |
|---|
Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Phot [ph] | Flame |
|---|
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What Is This Tool?
This tool allows users to convert illumination values measured in phot (ph), a historical unit of illuminance, into the informal unit flame, commonly used to describe light emitted by open flames or for qualitative comparisons.
How to Use This Tool?
- Enter the illumination value in phot (ph).
- Select phot as the source unit and flame as the target unit.
- Click convert to get the equivalent illumination expressed in flame.
- Use the results for informal or operational lighting descriptions.
Key Features
- Converts from phot, a unit representing high illumination levels, to flame, an informal qualitative light measure.
- Supports users needing non-technical, comparative illumination values.
- Ideal for historical, safety, or fieldwork lighting contexts.
- Easy-to-use, browser-based conversion tool.
Examples
- Convert 2 ph to flame: 2 × 232.2576 = 464.5152 flame.
- Convert 0.5 ph to flame: 0.5 × 232.2576 = 116.1288 flame.
Common Use Cases
- Interpreting very bright illumination values in older lighting engineering documents.
- Providing qualitative light level descriptions in firefighting and safety reports.
- Using informal lighting terms in archaeological or conservation field notes.
- Comparing brightness levels without requiring precise photometric instruments.
Tips & Best Practices
- Use this conversion tool primarily for qualitative or historical lighting analysis.
- Remember that flame is an informal, non-standard unit and is not suitable for technical measurements.
- Prefer photometric units like lux or candela for precise illumination quantification.
- Apply results where approximate or relative light levels suffice.
Limitations
- Flame is not a standardized or scientifically precise illuminance unit.
- Conversion provides approximate, qualitative illumination values.
- Not appropriate for technical or scientific measurement needs.
Frequently Asked Questions
- What is the phot (ph) unit used for?
- Phot is an older, non-SI unit of illuminance equal to one lumen per square centimetre, used historically to express high levels of illumination such as direct sunlight or studio lighting.
- Is flame a standard unit of light measurement?
- No, flame is an informal term used to describe the light emitted by an open flame and is not standardized in scientific or engineering contexts.
- When should I use this phot to flame conversion?
- This conversion is useful for rough, qualitative light level descriptions in operational, historical, or fieldwork contexts where exact photometric measurements are unnecessary.
Key Terminology
- Phot [ph]
- A non-SI unit of illuminance representing one lumen per square centimetre, historically used for expressing high illumination levels.
- Flame
- An informal term describing light emitted by an open combustion source; not standardized or precise in photometry.