We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is a Tesla?

Michael Anissimov
Updated May 21, 2024
Our promise to you
All The Science is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At All The Science, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

The tesla is an SI unit for measuring the strength of a magnetic field. Its symbol is T. The unit is named after the famous inventor Nikola Tesla, who discovered the alternating current, among hundreds of other phenomena. A magnetic field of one tesla is about 30,000 times as powerful as the Earth's magnetic field. However, because the quantity of teslas is computed by dividing the total magnetic flux (power) by area, magnetic fields of high tesla can be achieved by concentrating them in a small space.

For a magnetic flux density to equal 1 tesla, a force of 1 newton must act on a wire of length 1 meter carrying 1 ampere of current. A newton -- the force required to accelerate a 1 kg weight at one meter per second squared -- is a lot of force for a magnetic field to exert, and is not easily achieved. The most powerful superconducting electromagnets only produce magnetic fields of around 20T.

The most powerful continuous magnetic field yet generated measures 45T, and the strongest destructive pulse magnet about 850T. A gauss, another unit for measuring magnetism, is 1/10,000th of a tesla. The gamma, still another unit used in geophyics to measure magnetic fields, is one billionth of a tesla.

A weber, another SI unit, is used to measure magnetic flux, whereas the tesla is used to measure magnetic flux density, commonly understood as a magnetic field. It is possible for a given material to become entirely saturated with magnetic flux. For example, 10 teslas is considered to be the upper limit of niobium-titanium accelerator magnets.

Medical magnetic resonance imaging typically sustains a field strength of 2T. A large loudspeaker magnet generates 1T. Exotic cosmic objects such as the magnetar, a neutron star with a massive magnetic field, produce between 0.1 and 100 gigateslas. This is enough to wipe a credit card at a distance equivalent to the gap between the Earth and the Sun.

All The Science is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Michael Anissimov
By Michael Anissimov
Michael Anissimov is a dedicated All The Science contributor and brings his expertise in paleontology, physics, biology, astronomy, chemistry, and futurism to his articles. An avid blogger, Michael is deeply passionate about stem cell research, regenerative medicine, and life extension therapies. His professional experience includes work with the Methuselah Foundation, Singularity Institute for Artificial Intelligence, and Lifeboat Foundation, further showcasing his commitment to scientific advancement.
Discussion Comments
By anon346840 — On Sep 01, 2013

It is obvious that the magnetic field force is a relatively weak field force. It is surprising but a no-brainer that smaller surfaces same ampere must have a stronger tesla as a result. Really interesting.

How many teslas do I need to push a 4 Mega Newton. When using more coils, this can be achieved. Twelve coils can reach that goal easier than six coils. right?

Multiplying 4MN / 12 coils makes .7 or .8MN per coil. And you have a perfect wormdrive. --Christian K.

By Diablosniper — On May 01, 2009

So measuring lets say a 'rare earth magnet' is going to be measured in Gauss and not Tesla, correct?

Michael Anissimov
Michael Anissimov
Michael Anissimov is a dedicated All The Science contributor and brings his expertise in paleontology, physics, biology...
Learn more
All The Science, in your inbox

Our latest articles, guides, and more, delivered daily.

All The Science, in your inbox

Our latest articles, guides, and more, delivered daily.