What Is This Tool?
This converter enables you to translate luminous intensity measurements from the German candle, an old unit used in German-speaking regions, to the pentane candle (10 candle power), a historical unit based on pentane combustion. Both units have historical significance in early lighting and photometry before the adoption of the candela.
How to Use This Tool?
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Enter the value in candle (German) units that you wish to convert
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Select the source unit as candle (German) [c (German)] and target unit as pentane candle (10 candle power)
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Click the convert button to see the result expressed in pentane candle units
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Use the provided examples to verify your conversions
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Apply conversions to compare or interpret historical lighting data
Key Features
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Converts between two obsolete luminous intensity units used historically in 19th and early 20th centuries
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Supports interpretation of vintage lighting specifications and archival measurement data
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Browser-based, user-friendly interface for quick conversion calculations
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Provides clear examples illustrating conversion calculations
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Assists in museum curation, restoration, and historical research contexts
Examples
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5 candle (German) equals approximately 0.5263 pentane candle (10 candle power)
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10 candle (German) equals approximately 1.0526 pentane candle (10 candle power)
Common Use Cases
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Interpreting historic luminous intensity ratings recorded in the German candle unit
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Comparing and translating early lighting measurements to other historical candle-based units
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Supporting restoration of vintage lamps with original German candle specifications
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Documenting museum lighting equipment with authentic historical photometric data
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Conducting archival research on 19th and early 20th-century illumination technologies
Tips & Best Practices
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Double-check historical sources for unit definitions due to possible regional or temporal variations
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Use the conversion primarily for historical or archival interpretation rather than modern applications
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Combine conversions with historical context to better understand obsolete lighting standards
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Rely on examples provided to confirm calculation methods
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Document conversions clearly when citing or comparing historical luminous intensity data
Limitations
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Both candle (German) and pentane candle units are obsolete and replaced by SI candela
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Conversion accuracy may be limited by historical variations in unit definitions
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Intended for specialized or archival use, not for contemporary technical applications
Frequently Asked Questions
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What is the candle (German) unit?
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It is an obsolete German luminous intensity unit based on the light from a standardized flame, historically linked to lamps like the Hefner lamp and used in German-speaking countries.
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What does pentane candle (10 candle power) measure?
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This unit measures luminous intensity from a standardized candle burning pentane, defined as 10 times the traditional candle unit and used historically before the candela was adopted.
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Why convert between these historical units?
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Conversion helps interpret and compare historic lighting specifications from different regions or periods, aiding research, restoration, and museum documentation.
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Is this conversion suitable for modern lighting?
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No, these units are obsolete and conversions are primarily for historical or archival study rather than practical modern use.
Key Terminology
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Candle (German) [c (German)]
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An obsolete German luminous intensity unit based on a standardized flame, used historically in German-speaking countries.
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Pentane candle (10 candle power)
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A historical unit measuring luminous intensity from a candle burning pentane, equal to 10 traditional candles.
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Luminous Intensity
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A measure of the amount of light emitted by a source in a given direction.