What is the long reed unit?

The long reed is a traditional and now obsolete length unit historically used for land measurement, with varying values depending on region and period.

What does the Bohr radius represent?

The Bohr radius is an atomic unit of length corresponding to the most probable distance between the nucleus and electron in a hydrogen atom's ground state.

Why convert between long reed and Bohr radius?

This conversion helps analyze historical distances at atomic scales, useful in quantum chemistry, computational physics, and interdisciplinary research.

How to Convert from Long reed to Bohr radius [b, a.u.]?

Learn how to convert lengths from the traditional long reed unit to the atomic-scale Bohr radius using a precise conversion factor. Ideal for historical metrology and quantum chemistry applications.

Long reed

Bohr radius [b, a.u.]

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Long reed to Bohr radius [b, a.u.] Conversion Table

Long reed	Bohr radius [b, a.u.]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

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Interval

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Long reed to Bohr radius [b, a.u.] Conversion Table
Long reed	Bohr radius [b, a.u.]

Explore More Length Units Converter

What Is This Tool?

This unit converter transforms measurements from the historical long reed, an obsolete length unit once used in land measurement, into the Bohr radius, an atomic unit representing the typical distance between a hydrogen atom's nucleus and electron. It bridges legacy measurement systems with atomic-scale units for scientific and historical research.

How to Use This Tool?

Enter the value in long reeds that you want to convert.
Select 'Long reed' as the source unit.
Select 'Bohr radius [b, a.u.]' as the target unit.
Click the convert button to get the equivalent value in Bohr radii.

Key Features

Converts from the traditional long reed length unit to the Bohr radius atomic unit.
Uses an exact conversion rate based on scientific constants and historical data.
Supports applications in historical land surveying and quantum physics.
Browser-based and user-friendly interface for quick conversions.

Examples

2 Long reed = 120957581076.958 Bohr radius [b, a.u.]
0.5 Long reed = 30239395269.2395 Bohr radius [b, a.u.]

Common Use Cases

Converting historical land measurement distances for modern analysis.
Scaling distance data to atomic units in quantum chemistry and physics.
Cross-referencing legacy surveying units with atomic-scale measurements.
Supporting interdisciplinary research linking macro and atomic length scales.

Tips & Best Practices

Verify the historical context of the long reed unit to ensure correct conversion.
Use this tool primarily for theoretical or research purposes rather than practical measurements.
Understand the difference between fixed atomic units and variable historical units.
Double-check conversions when applying data to scientific modeling or historical analysis.

Limitations

The long reed's exact length changes depending on locality and time period, causing conversion uncertainties.
The Bohr radius is a fixed atomic constant, so conversion is mainly theoretical or specialized.
Historical unit definitions must align correctly with the conversion factor used.
Not suitable for precise practical measurements without contextual adjustments.

Frequently Asked Questions

What is the long reed unit?: The long reed is a traditional and now obsolete length unit historically used for land measurement, with varying values depending on region and period.
What does the Bohr radius represent?: The Bohr radius is an atomic unit of length corresponding to the most probable distance between the nucleus and electron in a hydrogen atom's ground state.
Why convert between long reed and Bohr radius?: This conversion helps analyze historical distances at atomic scales, useful in quantum chemistry, computational physics, and interdisciplinary research.

Key Terminology

Long reed: An old unit of length used historically for land measurements with values that vary by time and place.
Bohr radius: The atomic unit of length equal to approximately 5.29177210903×10⁻¹¹ metres, representing the hydrogen atom's electron-nucleus distance.
Unit conversion: The process of changing a quantity expressed in one unit to another unit by applying a conversion factor.

Quick Knowledge Check

What type of unit is the 'long reed'?

A modern unit of length

A traditional, obsolete unit

An atomic unit

The Bohr radius is best described as:

A unit for land surveying

An atomic unit of length

A historical measurement

Why is the long reed to Bohr radius conversion mostly theoretical?

Because the long reed varies historically

Because Bohr radius changes frequently

Because both units are obsolete

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