How to convert 1 oersted to 79.577 A/m?

1 oersted = 79.577 amperes per meter

How do I convert magnetic field units?

Enter your value in the 'From' field, select your starting unit (like Tesla or Gauss), choose your target unit in the 'To' field, and get instant conversion results. For example, to convert 1 Tesla to Gauss, enter 1, select 'Tesla', then select 'Gauss'.

What is the difference between Tesla and Gauss?

Tesla (T) and Gauss (G) are both units of magnetic flux density. 1 Tesla = 10,000 Gauss. Tesla is the SI unit, while Gauss is commonly used in older literature and some engineering applications. Tesla is preferred in modern scientific work.

How accurate is this magnetism converter?

Our converter uses precise mathematical formulas with conversion factors accurate to 10+ decimal places. For example, 1 Tesla = 10,000 Gauss exactly. Results are suitable for scientific research, engineering calculations, and professional applications.

What are common magnetic field values in real-world applications?

Typical values include: MRI machine (1.5-3 T), Earth's magnetic field (25-65 μT), refrigerator magnet (5 mT), neodymium magnet (1.4 T), and laboratory magnets (0.1-10 T). Our converter handles values from very weak to extremely strong fields.

How do I convert Tesla to other magnetic units?

Our converter supports Tesla, Gauss, Oersted, Ampere/meter, Weber, Maxwell, and more. For example: 1 T = 10,000 G, 1 T = 7,957.75 Oe, 1 T = 795.775 A/m. All conversions are precise and based on international standards.

What is magnetic flux density?

Magnetic flux density (B) measures the strength of a magnetic field per unit area. It is measured in Tesla (T) or Gauss (G) and represents how much magnetic flux passes through a given area. It's fundamental in electromagnetic theory and applications.

How is magnetic field strength related to magnetic flux density?

Magnetic field strength (H) and magnetic flux density (B) are related by: B = μH, where μ is the permeability of the material. In vacuum, μ₀ = 4π×10⁻⁷ H/m. This relationship is crucial in electromagnetic calculations and material science.

Is this magnetism converter free to use?

Yes, completely free! No registration, no limits, no ads. You can perform unlimited magnetic field conversions for scientific research, engineering projects, academic work, or personal use. Works on all devices including mobile phones.

Magnetism Converter

Convert between tesla, gauss, and other magnetic field units

From

Magnetic Field Strengths

MRI Machine

≈ 1.5-3 T (very strong field)

Earth's Magnetic Field

≈ 25-65 μT (0.25-0.65 G)

Refrigerator Magnet

≈ 5 mT (50 G)

Neodymium Magnet

≈ 1.4 T (14,000 G)

Magnetism Applications

Medical Imaging

MRI scanners use strong magnetic fields

Navigation

Compasses detect Earth's magnetic field

Electric Motors

Magnetic flux density for motor design

Data Storage

Hard drives use magnetic fields

Magnetic Unit Categories

Field Strength

A/m (Ampere per meter)
Oe (Oersted)

Flux Density

T (Tesla), mT, μT, nT
G (Gauss), kG

Magnetic Flux

Wb (Weber), mWb, μWb
Mx (Maxwell)

About Magnetism Measurement

Magnetism Measurement: A Comprehensive Guide

Magnetism measurement encompasses the quantification and analysis of magnetic fields, their properties, and their interactions with materials. This fundamental aspect of electromagnetism is crucial for understanding everything from Earth's magnetic field to advanced medical imaging technologies.

Fundamental Concepts in Magnetism

Magnetism is one of the fundamental forces of nature, arising from the motion of electric charges. When electric charges move, they create magnetic fields that can exert forces on other moving charges and magnetic materials. The study of magnetism involves several key concepts:

Magnetic Field (B)

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. The magnetic field at any point in space is defined by both its magnitude and direction.

Key Formula: Magnetic Field

B = μ₀(H + M)
Where: B = magnetic flux density (Tesla)
μ₀ = permeability of free space (4π × 10⁻⁷ H/m)
H = magnetic field strength (A/m)
M = magnetization (A/m)

Magnetic Flux (Φ)

Magnetic flux is a measure of the total magnetic field passing through a given area. It represents the "amount" of magnetic field lines penetrating a surface and is fundamental to electromagnetic induction and transformer theory.

Key Formula: Magnetic Flux

Φ = B × A × cos(θ)
Where: Φ = magnetic flux (Weber)
B = magnetic flux density (Tesla)
A = area (m²)
θ = angle between B and normal to surface

Units of Magnetic Measurement

International System (SI) Units

Quantity	SI Unit	Symbol	Definition
Magnetic Flux Density	Tesla	T	Wb/m²
Magnetic Flux	Weber	Wb	V⋅s
Magnetic Field Strength	Ampere per meter	A/m	Current per unit length
Magnetomotive Force	Ampere-turn	At	Current × turns

Centimeter-Gram-Second (CGS) Units

Quantity	CGS Unit	Symbol	SI Equivalent
Magnetic Flux Density	Gauss	G	10⁻⁴ T
Magnetic Flux	Maxwell	Mx	10⁻⁸ Wb
Magnetic Field Strength	Oersted	Oe	79.5775 A/m
Magnetomotive Force	Gilbert	Gb	0.795775 At

Conversion Relationships

Magnetic Flux Density Conversions

Tesla to Gauss

1 T = 10,000 G
1 G = 10⁻⁴ T

Examples:
• 1.5 T (MRI) = 15,000 G
• 50 G (refrigerator magnet) = 0.005 T

Common Prefixes

Millitesla (mT): 1 mT = 10⁻³ T = 10 G
Microtesla (μT): 1 μT = 10⁻⁶ T = 0.01 G
Nanotesla (nT): 1 nT = 10⁻⁹ T = 10⁻⁵ G
Kilogauss (kG): 1 kG = 10³ G = 0.1 T

Magnetic Field Strength Conversions

Ampere/meter to Oersted

1 A/m = 0.01257 Oe
1 Oe = 79.5775 A/m

This conversion factor arises from the relationship between SI and CGS systems:
μ₀ = 4π × 10⁻⁷ H/m (SI)
μ₀ = 1 (CGS)

Measurement Techniques and Instruments

Hall Effect Sensors

Hall effect sensors are semiconductor devices that produce a voltage proportional to the magnetic field strength. When a magnetic field is applied perpendicular to the current flow in a conductor, a voltage develops across the conductor perpendicular to both the current and the magnetic field.

Hall Effect Formula

V_H = (I × B × d) / (n × e × t)
Where: V_H = Hall voltage
I = current through the sensor
B = magnetic flux density
d = thickness of the sensor
n = charge carrier density
e = elementary charge
t = temperature factor

Fluxgate Magnetometers

Fluxgate magnetometers use the nonlinear magnetic properties of ferromagnetic materials to measure magnetic fields. They consist of a core of easily saturable ferromagnetic material with two coils: an excitation coil and a sense coil.

SQUID Magnetometers

Superconducting Quantum Interference Devices (SQUIDs) are the most sensitive magnetic field sensors available, capable of detecting magnetic fields as small as 10⁻¹⁵ T. They operate based on the Josephson effect in superconducting materials.

Nuclear Magnetic Resonance (NMR)

NMR techniques measure magnetic fields by observing the precession of nuclear spins in a magnetic field. The precession frequency is directly proportional to the magnetic field strength, providing highly accurate measurements.

Real-World Applications and Field Strengths

Application	Field Strength	Tesla	Gauss	Description
Interstellar Space	Very Weak	10⁻¹⁰ T	10⁻⁶ G	Intergalactic magnetic fields
Earth's Magnetic Field	Weak	25-65 μT	0.25-0.65 G	Geomagnetic field at surface
Refrigerator Magnet	Moderate	5 mT	50 G	Common household magnet
Neodymium Magnet	Strong	1.4 T	14,000 G	Rare earth permanent magnet
MRI Machine	Very Strong	1.5-3 T	15,000-30,000 G	Medical imaging
Research Magnets	Extreme	10-45 T	100,000-450,000 G	Laboratory research
Pulsar Surface	Ultra-Strong	10⁸-10¹¹ T	10¹²-10¹⁵ G	Neutron star magnetic field

Magnetic Materials and Properties

Magnetic Permeability

Magnetic permeability (μ) is a measure of how easily a material can be magnetized. It relates the magnetic flux density (B) to the magnetic field strength (H) through the relationship B = μH.

Material Type	Relative Permeability (μᵣ)	Behavior	Examples
Diamagnetic	μᵣ < 1	Weakly repelled	Water, copper, bismuth
Paramagnetic	μᵣ > 1	Weakly attracted	Aluminum, oxygen, platinum
Ferromagnetic	μᵣ >> 1	Strongly attracted	Iron, nickel, cobalt
Ferrimagnetic	μᵣ >> 1	Strongly attracted	Ferrites, magnetite

Electromagnetic Theory and Maxwell's Equations

The complete description of electromagnetic phenomena is given by Maxwell's equations, which relate electric and magnetic fields to their sources and to each other.

Maxwell's Equations in Integral Form

Gauss's Law for Electricity: ∮E⋅dA = Q/ε₀

Gauss's Law for Magnetism: ∮B⋅dA = 0

Faraday's Law: ∮E⋅dl = -dΦ/dt

Ampère's Law: ∮B⋅dl = μ₀(I + ε₀dΦₑ/dt)

Practical Applications in Modern Technology

Medical Applications

Magnetic Resonance Imaging (MRI): Uses strong magnetic fields (1.5-3 T) to create detailed images of internal body structures
Nuclear Magnetic Resonance (NMR): Analyzes molecular structure and chemical composition
Magnetic Particle Imaging: Tracks magnetic nanoparticles for medical diagnostics

Industrial Applications

Electric Motors and Generators: Convert electrical energy to mechanical energy and vice versa
Transformers: Transfer electrical energy between circuits through magnetic coupling
Magnetic Levitation: High-speed transportation systems using magnetic repulsion
Magnetic Separation: Separate materials based on their magnetic properties

Scientific Research

Particle Physics: Particle accelerators use magnetic fields to guide and focus particle beams
Astrophysics: Study of cosmic magnetic fields in stars, galaxies, and interstellar space
Geophysics: Investigation of Earth's magnetic field and its variations
Materials Science: Development of new magnetic materials and understanding magnetic phenomena

Measurement Accuracy and Calibration

Accurate magnetic field measurements require proper calibration and understanding of various error sources. Calibration standards are maintained by national metrology institutes using primary standards based on fundamental physical constants.

Common Error Sources

Temperature Effects: Magnetic properties of materials change with temperature
Hysteresis: Magnetic materials retain some magnetization after the field is removed
Demagnetization: Self-demagnetization in finite samples affects measurements
Environmental Fields: Earth's magnetic field and nearby magnetic sources
Sensor Nonlinearity: Non-ideal response of measurement instruments

Future Developments in Magnetism Measurement

Advances in magnetism measurement continue to push the boundaries of sensitivity, accuracy, and applicability. Emerging technologies include:

Quantum Sensors: Using quantum mechanical effects for ultra-sensitive measurements
Atomic Magnetometers: Based on atomic energy level transitions in magnetic fields
Magnetic Resonance Force Microscopy: Combining MRI with atomic force microscopy
Optical Pumping: Using laser light to enhance magnetic field sensitivity
Graphene-based Sensors: Exploiting unique electronic properties of graphene

Historical Perspective

The study of magnetism dates back to ancient civilizations, with the first systematic investigation by William Gilbert in 1600. The development of electromagnetic theory by James Clerk Maxwell in the 1860s unified electricity and magnetism, leading to modern understanding and applications. Today, magnetism measurement continues to evolve with new technologies and applications in quantum computing, medical imaging, and renewable energy systems.

Conclusion

Magnetism measurement is a fundamental aspect of modern science and technology, with applications ranging from medical imaging to particle physics. Understanding the various units, measurement techniques, and conversion relationships is essential for professionals working in fields that involve magnetic phenomena. The continued development of measurement technologies promises to unlock new applications and improve our understanding of the magnetic world around us.

This comprehensive guide provides the foundation for understanding magnetism measurement, but the field continues to evolve with new discoveries and technological advances. Whether you're working with MRI machines, designing electric motors, or conducting fundamental research, a solid understanding of magnetic measurement principles is essential for success.