What Is This Tool?
This converter helps translate luminous intensity values between pentane candle (10 candle power) and candle (international) units. Both are historical, non-SI photometric units used before the adoption of the candela. It is especially helpful for historical research, museum studies, and understanding legacy lighting standards.
How to Use This Tool?
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Enter a value in pentane candle (10 candle power) unit
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Select the target unit as candle (international) [c]
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Initiate conversion to receive the equivalent luminous intensity
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Review results to support historical data analysis or technical interpretation
Key Features
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Simple conversion between pentane candle (10 candle power) and candle (international) units
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Supports interpretation of historical luminous intensity measurements
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Useful for analyzing older lighting literature and technical documents
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Browser-based and easy to access without installation
Examples
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2 Pentane candle (10 candle power) converts to 20 Candle (international) [c]
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0.5 Pentane candle (10 candle power) converts to 5 Candle (international) [c]
Common Use Cases
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Comparing light outputs described in 19th to early 20th century lighting literature
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Translating old photometric measurements that use candle-based units
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Interpreting and analyzing museum records or vintage lamp data
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Converting legacy lighting standards for historical study or engineering purposes
Tips & Best Practices
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Confirm the context is historical or academic as these units are obsolete
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Use this conversion to aid research on early lighting technologies and calibration standards
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Avoid applying conversions to modern photometric data since these units are non-SI
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Check source information to ensure correct interpretation of old luminous intensity values
Limitations
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Both pentane candle and candle (international) are obsolete, non-SI units
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Values may have minor variations due to historical calibration differences
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Conversion applies mainly in historical or academic settings
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Not suitable for modern photometric measurement or current lighting standards
Frequently Asked Questions
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What is the pentane candle (10 candle power)?
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It is a historical luminous intensity unit based on a standard candle burning pentane, equal to ten traditional candle power units.
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What does the candle (international) [c] represent?
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The international candle is an obsolete photometric unit once used as a luminous intensity reference lamp before the SI candela.
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Can this conversion be used for modern lighting measurements?
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No, these units are outdated and primarily used for historical interpretation rather than contemporary photometric data.
Key Terminology
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Pentane candle (10 candle power)
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A historical luminous intensity unit defined by a candle burning pentane, equal to 10 times the traditional candle unit.
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Candle (international) [c]
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An obsolete photometric unit once used as a luminous intensity reference before the SI candela was adopted.
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Luminous intensity
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A measure of the wavelength-weighted power emitted by a light source in a particular direction.