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How to Convert from Hefner Candle to Pentane Candle (10 Candle Power)?
Convert luminous intensity values from the historical Hefner candle unit to the Pentane candle (10 candle power) unit. Useful for translating old lighting specifications and archival photometric data.
Please check your input. It must be a valid numeric value.
Hefner candle to Pentane candle (10 candle power) Conversion Table
| Hefner candle | Pentane candle (10 candle power) |
|---|
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.
| Hefner candle | Pentane candle (10 candle power) |
|---|
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What Is This Tool?
This converter transforms measurements of luminous intensity from the Hefner candle, an obsolete German unit defined by a standardized lamp, into the Pentane candle (10 candle power), another historical unit based on a pentane-burning standard candle. It helps users interpret and compare historical lighting data.
How to Use This Tool?
- Enter the value in Hefner candles you want to convert.
- Select 'Hefner candle' as the input unit and 'Pentane candle (10 candle power)' as the output unit.
- Click convert to see the equivalent luminous intensity in Pentane candles.
- Use the results to analyze or compare historical lighting data accurately.
Key Features
- Converts between two historical units of luminous intensity.
- Based on standardized but obsolete lighting definitions from the 19th and early 20th centuries.
- Supports interpretation of archival and museum lighting measurements.
- Offers easy browser-based calculation with a straightforward formula.
Examples
- 5 Hefner candles equals 0.45 Pentane candle (10 candle power).
- 10 Hefner candles equals 0.9 Pentane candle (10 candle power).
Common Use Cases
- Translating lighting specifications from historic German and Austrian documents.
- Comparing obsolete luminous intensity units used in early photometric research.
- Restoring or calibrating antique light meters and vintage museum exhibits referencing period units.
Tips & Best Practices
- Use this tool for historical and archival research rather than modern engineering use.
- Recognize the units are non-SI and reflect older calibration standards.
- Double-check conversions when integrating into projects involving multiple obsolete units.
- Refer to additional resources for converting these units to modern SI standards when needed.
Limitations
- Both Hefner candle and Pentane candle (10 candle power) are obsolete and non-SI units.
- Conversion depends on specific historical definitions which could vary.
- The units do not directly correspond to modern SI luminous intensity without further conversion.
Frequently Asked Questions
- What is a Hefner candle?
- The Hefner candle is an obsolete luminous intensity unit defined by a lamp burning amyl acetate under specific conditions, historically used in German-speaking countries before the candela.
- How is the Pentane candle (10 candle power) defined?
- It is a historical unit defined from a standard candle burning pentane and represents a luminous intensity equal to ten times the traditional candle unit.
- Why convert between these units?
- Converting helps interpret and compare historical lighting data, supports restoration of antique instruments, and aids researchers dealing with old photometric standards.
Key Terminology
- Hefner candle
- An obsolete unit of luminous intensity defined by a lamp burning amyl acetate under specified conditions, used historically in German-speaking regions.
- Pentane candle (10 candle power)
- A non-SI historical unit of luminous intensity based on a standard candle burning pentane, equal to ten times the traditional candle unit.
- Luminous intensity
- A measure of the wavelength-weighted power emitted by a light source in a particular direction.