What Is This Tool?
This converter helps translate electric charge values from the ESU of charge, used in the electrostatic (Gaussian) CGS system, to the EMU of charge, the corresponding unit in the electromagnetic CGS-EMU system. It is designed to assist users working with different CGS conventions, such as those in plasma physics, astrophysics, and classical electrodynamics.
How to Use This Tool?
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Enter the value in ESU of charge you want to convert.
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Select ESU of charge as the input unit and EMU of charge as the output unit.
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Click the convert button to see the equivalent value in EMU of charge.
Key Features
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Convert electric charge values from ESU of charge to EMU of charge accurately.
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Supports charge unit conversions within CGS subsystems.
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Ideal for comparing historical and modern experimental data.
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Browser-based and easy to use with no installation needed.
Examples
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1 ESU of charge converts to 3.335640951982e-11 EMU of charge.
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10 ESU of charge converts to 3.335640951982e-10 EMU of charge.
Common Use Cases
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Expressing charges in theoretical electrodynamics using Gaussian CGS units.
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Converting charge values from older CGS-EMU literature to SI-related EMU units.
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Analyzing plasma physics or astrophysics work adopting CGS-Gaussian conventions.
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Reconciling unit consistency between historical and modern charge measurements.
Tips & Best Practices
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Verify correct unit selections before converting to avoid errors.
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Interpret results carefully as ESU and EMU represent different physical unit systems.
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Use this tool to aid comparison of experimental and theoretical data across CGS subsystems.
Limitations
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Conversion involves extremely small numbers that may cause numerical precision challenges.
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Physical context and unit definitions differ fundamentally between ESU and EMU CGS units; results require cautious interpretation.
Frequently Asked Questions
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What is the ESU of charge unit?
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The ESU of charge, also called the statcoulomb, is the unit of electric charge in the electrostatic (Gaussian) CGS system, defined so that two point charges of 1 esu separated by 1 cm experience a force of 1 dyne.
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What does the EMU of charge represent?
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In the CGS-EMU system, the EMU of charge (also called the abcoulomb) is the charge carried by one abampere in one second, corresponding to 10 coulombs in SI units.
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Why convert from ESU to EMU of charge?
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Converting from ESU to EMU of charge enables translation between the electrostatic and electromagnetic CGS systems, facilitating comparison of theoretical and experimental results reported in different unit conventions.
Key Terminology
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ESU of charge
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Electrostatic unit of charge in the Gaussian CGS system also known as statcoulomb.
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EMU of charge
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Electromagnetic unit of charge in the CGS-EMU system also called abcoulomb.
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CGS system
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A centimetre–gram–second system of units used in theoretical and experimental physics, with subsystems such as electrostatic (ESU) and electromagnetic (EMU).