What Is This Tool?
This converter enables you to translate length values from the Bohr radius, an atomic-scale unit frequently applied in quantum chemistry and physics, into the long reed, a traditional but now obsolete length unit historically used for land measurement and surveying.
How to Use This Tool?
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Enter the numeric length value in Bohr radius units
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Select Bohr radius [b, a.u.] as the input unit
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Choose long reed as the output unit
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Click convert to obtain the equivalent length in long reeds
Key Features
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Converts length values from Bohr radius (atomic unit) to long reed
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Supports interdisciplinary applications linking quantum physics with historic metrology
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Useful for interpreting historical land records and surveying data
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Browser-based and easy to use for rapid unit translation
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Includes legacy units to modern conversions for archival and research use
Examples
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1 Bohr radius = 1.6534722190976e-11 long reed
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100 Bohr radii = 1.6534722190976e-9 long reeds
Common Use Cases
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Translating atomic-scale quantum or physics measurements into historic land survey units
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Converting legacy property and boundary data from old measurement systems to facilitate restoration
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Supporting archival and linguistic research into obsolete regional measurement standards
Tips & Best Practices
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Use this conversion primarily for scholarly or historical analyses given the symbolic nature of the scale difference
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Be mindful of locality and period when interpreting long reed values due to their variability
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Consult historical sources to confirm context for accurate legacy measurement interpretation
Limitations
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The long reed's magnitude varies by geographic area and time period, making precise conversion approximate
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Bohr radius as an atomic unit relates to quantum scales and is practically symbolic in this conversion
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Conversion results should be used cautiously, recognizing the obsolete and context-dependent status of the long reed
Frequently Asked Questions
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What is the Bohr radius used for?
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The Bohr radius is used in quantum chemistry and atomic-structure calculations, helping express interatomic distances in atomic units.
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Why is the long reed considered an obsolete unit?
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The long reed is a traditional unit once used in land measurement and surveying but has varied regionally and historically, so modern calculations require conversion to standard units.
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Can I use this conversion for modern engineering projects?
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Since the long reed is an obsolete and locally variable unit, the conversion is best suited for historical, archival, or linguistic research rather than current engineering.
Key Terminology
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Bohr radius [b, a.u.]
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An atomic unit of length representing the typical distance between an electron and nucleus in a hydrogen atom’s ground state.
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Long reed
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A traditional and now obsolete unit of length used historically for land measurement whose exact size varied by region and time period.