A working catalog / in the spirit of the Whole Earth Catalog, 1968
↓ read on · or print the whole edition
the force became a design you draw →
← cheap enough, now, to hold in your hand
Purpose read this part slowly
For four thousand years a magnet was a fact of nature you could only find, not shape. It pointed, or it stuck, and it did the one thing its material had decided. Strength was the only variable: you bought a bigger one or a smaller one, and the behavior came in a single flavor.
That has changed. The force itself is now programmable. A pattern of tiny poles — maxels, magnetic pixels — printed across one face turns raw attraction into instruction: align here, hold there, spring back over a gap, click into set positions, let go on a quarter-turn. The magnet stops being a lump of pull and becomes a designed behavior — a mechanism with no moving parts to wear, no spring to fatigue, no hinge to seize.
What matters is who that hands the power to. Programmable force moves magnetism out of the physicist's bench and the motor winding and into reach of anyone with a problem and a pattern to imagine — a product designer, a maker, a repair tech, an engineer, a kid holding a demo block that behaves like no magnet they have felt. A realm of intimate, personal control over force is opening, and for the first time the tools to shape it are cheap enough to hold.
This catalog is access to that realm. Not a store and not an encyclopedia — a way in. It covers the whole of it: the science, the behaviors, the kits you can feel, the parts you can buy today, the printer and software that write the patterns, the trade that moves it, and the one source it traces back to. Read it on a screen. Better, print it, and mark it up.
We are as gods with magnetism now. We might as well get good at it.
1What an entry is. Every item gives you the three things the original Whole Earth Catalog did: what it is, a straight opinion on whether it’s worth your attention, and where to get it. No entry is here because someone paid for it.
2Claims are labeled. Numbers from a datasheet say so. A vendor’s marketing figure is marked vendor claim. Independent evidence is rare in this field, and this catalog says plainly where it exists and where it doesn’t.
3In print.Download the book for the typeset 6×9 edition — a real cover, page numbers, a contents page and a back-of-book index, every web address spelled out. Or hit Print page for a quick copy. That is how the Whole Earth Catalog was meant to be used, and this one too.
I
Understanding the fieldthe idea, before the parts make sense
A coded magnet is not a stronger magnet — it is a magnet that has been told what to do. The behavior lives in the pattern, not the material. Six ideas carry the whole field; get these and every part in this catalog explains itself.
The premiseThe coded magnet
A single piece of ordinary sintered neodymium whose face has been re-magnetized into a designed pattern of many small north and south regions, instead of one plain pole pair. Because the behavior is written into the arrangement, the same blank — same material, same size, same raw strength — can be made to grip, to push, to center itself, or to click. Correlated Magnetics Research trademarked the category as Polymagnet.
Our take: if you understand one entry in this book, make it this one. Everything else is a consequence of it.
Strength is a property of the material; behaviour is a property of the pattern. If a part is not strong enough, change the material or the size. If it does the wrong thing, change the pattern.maxelmag.com
The unitThe maxel
One “magnetic pixel” — a single poled region, roughly 1–4 mm across, written independently of its neighbors. A screen pixel is one addressable dot of color; a maxel is one addressable patch of polarity. A photograph isn’t a brighter dot — it’s many dots arranged. A coded magnet isn’t a stronger magnet; it’s many poles arranged.
For a patterned face the field falls off as F ∝ e−2πz/λ — z the gap, λ the pole pitch. Tight patterns hit hard but die within a millimeter or two; coarse patterns reach a little farther, softer. Reach itself becomes a design knob — and the reason coded magnets are contact devices, not across-the-room magnets.
Each maxel’s flux closes into its opposite-polarity neighbor a millimeter away, so the field piles up at the surface and collapses fast beyond it. Huge force at contact; almost nothing at a gap. That’s the whole trade: behavior and holding strength at the surface, bought with reach.
Source: multipolemag.com/how-it-works. Curve is illustrative of the stated law.
The trickThe correlation idea
Fullerton’s insight came straight from radar: a receiver finds a coded pulse train by correlation — perfectly aligned gives a huge spike, slightly off collapses to near-nothing. Do the same with poles (the patents literally use Barker codes) and at exact registration every N sits over an S and all pairs pull; nudge it and attract lands on repel, and the sum falls — the patent cites roughly ten-fold off-peak.
Coding redistributes a field; it does not add force. It rides the material’s fixed energy product (NdFeB tops out around 52 MGOe). Concentrate flux at the surface and you get more force at contact and less everywhere else. There is no free lunch — only a cleverly spent one.
Three honest walls. Short reach — essentially a contact device. No levitation — Earnshaw’s theorem holds; every “magnetic spring” demo rides a pin or shaft. Heat — standard demo parts are rated to about 60 °C. For pull across a real gap, a plain dipole still wins.
A rotating-orientation stack that pushes nearly all its flux to one face and cancels the other (Mallinson 1973, Halbach 1980s). It shares the steep near-field decay but is periodic — uniform one-sided flux for motors, MRI and maglev. Coded magnets are aperiodic, correlation-designed, and print an arbitrary force function into one piece.
A conventional magnet is a bulk force. A coded magnet is a mechanism.multipolemag.com · the one-line difference worth memorizing
feel one before you read further. it does the arguing for you.
II
The eight behaviorsthe vocabulary of programmable force
Correlated Magnetics names eight things a coded face can be told to do. Each is the same trick — a sculpted spatial force function — aimed at a different job. Learn these eight words and you can describe almost any coded part. Not sure which you need? Ask — which magnet does what → · or feel them in the shop.
AttachAlternating poles grip hard at contact, resist sliding, almost no reach.
AlignOne agreeing position pulls to center or angle; pushes back everywhere else.
LatchHolds off at a distance, then latches firmly the instant it touches.
SpringTwo frequencies float a pair at a set gap — a contactless spring that never fatigues.
Twist-releaseHolds when aligned; a small turn flips it to repel and eject.
ShearStriped poles resist sideways slip while seated, with no mechanical key.
TorqueTransmits rotation face-to-face — the seed of a contactless magnetic coupling.
DetentSectors give discrete click positions (4, 6, 12…) like a dial, nothing to wear.
Diagram II — twist-release (datasheet 1002300)
Hold at zero, eject at a twist
The 1″ D-shaped N50 pair that NASA’s glider and the famous SmarterEveryDay video both show. 49 N (~11 lb) attracting at 0°; about 57 N (~12.8 lb) actively repelling at ±20°, with a re-latch window near 4 mm. The force literally crosses through zero as you turn it.
Source: polymagnet datasheet 1002300, via multipolemag.com/behaviors.
Diagram III — spring / standoff (datasheet 1002288)
A spring with no coil
A coarse frequency attracts at range while a fine one repels up close, so the pair floats at a designed gap. Peaks around 25 N near contact and fades to zero by about 15 mm. Nothing to fatigue, corrode, or house — but it needs a pin for lateral constraint. Not levitation; Earnshaw still rules.
Source: polymagnet datasheet 1002288, via multipolemag.com/behaviors.
Read the patternPattern → behavior
A clean teaching set: alternating poles → attach; stripes → shear resistance; concentric rings → spring; a rotational code → align; sectors → detent; uniform → a plain hold. Same material, same size, same strength — change only how the maxels are arranged and you change what the part does.
Because autocorrelation makes a matched, aligned pair strong and everything else collapse, a pattern becomes an identity: a connector that refuses the wrong socket, an anti-counterfeit seat, a mechanical lock-and-key. Patented in coded filter interconnects that seat only when correct. Rejection is analog — strongly weaker, not literally zero.
Tools & demo kitsyou cannot argue with a magnet in your hand
The whole technology is counter-intuitive until you feel it, and then it is obvious. These are the kits that let you feel align, latch, spring and hold for yourself — the cheapest education in the field, and the thing to put in a skeptic’s hand. Prices as listed by FerroSpring, a beta-test Polymagnet distributor.
Start herePolymagnet Demo Kit
The complete hands-on introduction — feel align, latch, spring and hold in one box. This is the conversion tool: the ten seconds that do what a page of force curves can’t. If you buy one thing in this catalog, buy this.
Knob-mounted single-behavior magnets, each tuned to show one thing cleanly: Controlled Field and High-Force (~$21 each), a plain-magnet baseline (~$16), Rotational Alignment (~$42), and Twist-Release, Latch, Spring-Latch and Spring (~$52 each). Buy the one that matches your argument.
A thin sheet of oil-suspended particles that turns an invisible pattern into visible light and dark. The standard way to confirm a part is coded, that it matches the design, and that it’s centered. A magnetic field has no appearance; viewing film gives it one. No power, no calibration.
$16 / $91 Access: 100×75 mm or 200×300 mm, ferrospring.com(ferrospring.com) · Shop →
The lab benchSteel plate & brass rod
Two cheap accessories that turn a demo into a lab: a zinc-coated steel test plate (~$24.50) to feel holding and release on a real surface, and a non-magnetic brass constraining rod (~$3.50) that brings a pair together so you feel each behavior exactly as designed.
A demo block does in ten seconds what a page of force curves can’t: it makes a roomful of engineers go quiet, then reach for it again. Keep one on the desk — it closes meetings.
— the standing advice of everyone who has ever sold this technology
IV
Working partsreal datasheet parts, filed by what they do
Purchasable parts, grouped by behavior rather than material, with datasheet part numbers so you can find them at the source. Function pairs run roughly $10–$40 against under $2 for a plain magnet — you pay for the behavior, not the neodymium. No mechanism, no hinge, no spring to wear.Shop these parts by what they do →
1002300Twist-release pair
The signature part: 1″ D-shaped N50 pair, 49 N hold at 0°, ~57 N eject at ±20°, re-latch near 4 mm. The mechanism NASA flew and the one the famous video shows. About $35/pair.
The contactless standoff — two spatial frequencies in one face, ~25 N near contact fading to zero by ~15 mm. Its sibling is “two devices in one part”: a spring at 0°, a clamp at 180°. Runs on a pin for lateral constraint.
The high-holding family, licensed to Industrial Magnetics Inc.: 28 sizes, 8–96 lb holding. Fine patterns concentrate flux at the surface — especially effective on thin steel, where a plain magnet’s deep field leaks out the far side. Strength multipliers (“2× pull, 2–8× shear”) are vendor figures.
4-position (90°, ~$28) and 12-position (30°, ~$37) D-shape pairs, plus a 2″ drawer detent (~$44). The feel of a well-made dial, with nothing mechanical inside to wear out.
Center-alignment and bi-directional pairs, long- and short-range, in #4/#6/M4 countersunk mounts (0.63″–1″) so they bolt straight into an assembly. ~$18–$40. The most-used family in the catalog — the parts that quietly make two things meet correctly.
Push-to-close ring latches (~$25), sliding spring-latches for laptop and tablet closures (~$22), and portrait/landscape device mounts for phones and tablets that snap and lock at each rotation (~$29–$48). The consumer-facing edge of the technology.
A coded magnet is really software plus a magnetizing fixture. Whoever owns the fixture owns the part. This is the step where “a magnet that behaves” becomes a repeatable part on a drawing — and the step where, by Correlated Magnetics’ own account, magnetization became software.
2013 · the printerThe MagPrinter
A computer-controlled magnetizing head that writes a magnet’s pattern the way a dot-matrix printer wrote text: one pixel at a time, at speed, from a file. A capacitor bank fires a current pulse of about 0.8 milliseconds through a coil focused by a roughly 1 mm aperture, setting one maxel; the stage steps and fires again. A full pattern takes seconds to minutes.
This is the actual revolution in the manufacturing story. Change the design and you change a file — not tooling, not casting, not a new sinter run. The same blank becomes a latch, a spring, or a key. The magnet equivalent of moving from cast metal type to the laser printer.
Not printed with ink. Written with electricity, one region at a time.maxelmag.com/printing · writing patents US 10,204,727 et al.
design itPolyvision software
Place maxels on screen, watch the force-versus-distance curve in real time, iterate, then order the custom part that results — the same tools behind every Polymagnet. The practical bridge from “a magnet that behaves” to a manufacturable part.
The fixture — a tooled coil — defines the pattern; a capacitor-discharge pulse magnetizer supplies the energy. High-coercivity material holds a pattern beautifully, which is the same property that makes it need a stronger pulse to write. Own one and you can code; without it you’re a customer.
Access: the equipment houses in the trade →(wholemagnetics.com/wmc/#s6)
rides the chainSubstrate independence
The input is ordinary magnet stock — sintered NdFeB, SmCo for heat and corrosion, flexible sheet, or ferrite. Programmable magnetization is a value-add process, not a new material; it rides the existing supply chain, and the coding step is not in the China-dominated part of it. Prototype in minutes or hours, not months.
The competing way to make a multipole magnet is fixturing: build an array of electromagnets and fire them to write fields into a blank. It works for crude patterns — half north, half south — but it can’t place features close together or make really small ones. Precise, computer-controlled printing is what separates an advanced multipole magnet from one a fixture could stamp out.
From a single inventor, out to the makers, out again to the rare-earth mines. It is a scattered field, which is exactly why it wants a map. It is also the field a consolidator would want a map of. Named here only where the sources name them.
the centerCMR & Industrial Magnetics
Correlated Magnetics Research (Huntsville, AL) is the inventor and IP holder — licensing, custom design-ins, Polyvision, magnetizers, demo kits. Its verified manufacturing and applications partner is Industrial Magnetics Inc., which builds the licensed Max-Attach / Smart-Mag assemblies.
The real competitive set: MPCO Magnetics (US), SDM Magnetics (China, now offering patterned magnetization — the named threat), and EPI Magnets (China, Halbach arrays and couplings). Adjacent “programmable without coding”: Magswitch (switchable magnets, 65+ patents) and Magnomatics (magnetic gears).
The upstream that writes the patterns: Magnet-Physik Dr. Steingroever (Germany), Laboratorio Elettrofisico (Italy), Dr. Brockhaus Messtechnik (Germany), and Metis Instruments (Belgium) — pulse magnetizers, fixtures, and the test gear that proves a pattern is right.
Where the field keeps itself honest: the IEEE Magnetics Society (Transactions, INTERMAG, MMM), the International Magnetics Association, and Magnetics Magazine. For plain neodymium and education, K&J Magnetics is the default retailer — and ran the one near-independent test in this book.
This is a young field with more demonstration than independent data, and this catalog says so. Here is the on-ramp — and, just as important, an honest account of what has actually been measured and deployed versus what is still a vendor’s word.
the famous oneSmarterEveryDay #153
“Mind-Blowing Magic Magnets” (2015), filmed at Correlated Magnetics, is the video that introduced coded magnets to millions — and it shows the exact twist-release behavior in Section II. The best five minutes of on-ramp there is.
The one near-independent datapoint in the whole category: K&J Magnetics built arrays from the same five cubes and pull-tested them on steel. The alternating-pole array out-pulled both a plain stack and a Halbach — 88 lb vs 72–77 lb. Directional support for the surface-concentration claim, at contact, on steel.
Access: K&J Magnetics blog, via multipolemag.com(multipolemag.com)
the one deploymentNASA Prandtl-M
NASA Armstrong flew a Polymagnet twist-release on its Prandtl-M glider — five successful flight releases (Dec 2021, Sept 2022). The category’s single fully primary-source-verified deployment. When a big-name claim in this field is in doubt, ask for the equivalent of this article.
The citable technical spine: US 7,800,471 (the 2008 cornerstone — correlated field emission, the ~10× off-peak collapse), the force-profile and coding patents that follow, US 10,204,727 (MagPrinter writing), and the coded-interconnect patents. The earliest expire around 2028–2030 — a date that could open the field to second sources.
No independent third-party force test of a coded part has ever been published. Only NASA’s glider is a verified deployment. Everything stronger than that is a vendor’s word — so we label it.the honesty note this catalog keeps
VIII
The sourceevery road leads back to one place
Every road in this catalog leads back to one company and one man. Not a marketing claim — a matter of record.
We are as gods and might as well get good at it.Stewart Brand · The Whole Earth Catalog, 1968
Polymagnet
Correlated Magnetics Research — founded in North Alabama in 2006 as Cedar Ridge Research, renamed in 2008, and still independent in Huntsville — invented and patented the coded magnet. It holds the maxel-printing technology behind this entire catalog and makes the reference parts, the design software and the demos. If you buy one thing after reading this catalog, buy it from the people who made the field.
Access: polymagnet.com — Huntsville, AL (www.polymagnet.com)
1950–2016Larry Fullerton, inventor
An ultra-wideband radio pioneer who conceived UWB in 1973 and held, by report, 500-plus patents. The magnet idea reportedly began with wanting a self-assembling toy for his grandchildren — parts that would find their own way together — and his radar instinct supplied the mechanism: encode the faces like a coded pulse train and let correlation do the assembling. Co-invented with Mark Roberts. Popular Mechanics Breakthrough Award, 2010.
The wider fieldcool companies & products beyond coded magnets
Coded magnets are one bright corner of a very large field. These are companies and products from the rest of it worth knowing — some adjacent to programmable magnetism, some just gloriously clever uses of a magnet. Our own selection; the facts are sourced to each maker.
rare-earth-freeNiron Magnetics
The most interesting thing happening in magnet materials: a permanent magnet built from iron nitride (Fe₁₆N₂) instead of neodymium — the “Clean Earth Magnet,” by many accounts the first genuinely new permanent-magnet material in about forty years, with no rare earths and no China-controlled supply chain.
Spun out of the University of Minnesota in 2014; backed by GM, Stellantis, Samsung Ventures and others; breaking ground on a Minnesota plant aiming at roughly 1,500 tons a year by 2027. Coding rides whatever magnet stock exists — a rare-earth-free substrate would change the whole story underneath this catalog.
no gas, no compressorCooling with magnets
Refrigeration with no refrigerant: a magnetic field cycles a magnetocaloric material instead of compressing a gas. Magnotherm (Germany) won Refrigeration Innovation of the Year at ATMO Europe 2025; Magnoric (France) builds magnetocaloric display cabinets; Kiutra uses adiabatic demagnetization to reach sub-kelvin, cryogen-free, for quantum computers; Camfridge (UK) has worked the problem since 2005.
A shaft that spins on a controlled magnetic field, touching nothing — no lubrication, no wear, very high speed. SKF (through its S2M / Revolve line) builds the electromagnets and control that hold a rotor in mid-air inside turbomachinery and compressors. The purest “force as a service” in the field.
The most-made multipole product on earth, and nobody notices it: a ring magnetized with many alternating N/S pole pairs (down to ~2 mm pitch), read by a sensor to measure angle or speed. Phoenix America (US) makes the patterned ring targets; Baumer builds bearingless encoders that read them across big air gaps, on shafts up to about three meters.
Magnets as the connector itself. Rosenberger’s MagCode is a short-circuit-proof, self-finding 12/24 V power coupling that just snaps on; its Magnetic RJ45 carries data and power-over-Ethernet in one magnetic click. No fumbling, no wrong insertion, no bent pins.
Flyte is an Edison-style bulb that hovers in mid-air on magnetic levitation and lights up wirelessly through the air — one of TIME’s Best Inventions of 2016. Quantum Levitation sells a desktop kit where a cooled superconductor flux-pins over a magnet track and locks in place, even upside-down. (The Hendo and Lexus hoverboards were real proofs of concept, never sold.)
Ferrotec commercialized ferrofluid — a liquid that responds to a magnetic field — now used in loudspeakers, sensors, and the vacuum rotary seals that keep chip-fab chambers clean. It is also the stuff of the hypnotic sound-reactive ferrofluid sculptures that spike and dance to music under driven electromagnets.
Where a lot of engineers actually started. Geomag (Switzerland, 1998) is credited as the first magnetic construction toy — neodymium-tipped rods and steel spheres. Speks are rare-earth desk sets that behave like putty, stress-ball and building block at once. The cheapest intuition for “force you can arrange” there is.
The unglamorous giants that keep tramp metal out of your food and pull non-ferrous metal from scrap with eddy-current separators: Bunting (US/UK, since 1959, which absorbed Master Magnets), Goudsmit (Netherlands), and Eclipse (UK). Magnetism doing a billion quiet tons of work a year.
The shelfapps to simulate it, books to understand it
When the demo and the parts aren’t enough: the software to see a field before you commit it, and the books that explain the whole of magnetism — multipole patterns and everything around them. Where a tool can handle multipole or Halbach arrays, we say so.
First simulate the field. Then write it into the magnet.the order of operations, for anyone designing a coded part
free · softwareFEMM
Finite Element Method Magnetics — the free, open-source workhorse for 2D and axisymmetric magnetostatics (David Meeker). Lua scripting and ActiveX automation let you drive it from MATLAB or Octave. Multipole within its 2D limits; no full 3D. The first solver most people learn.
An open-source Python library that computes magnetic fields analytically — fast, vectorized, and explicitly documented for building Halbach arrays and arbitrary magnet assemblies. The best free route to a multipole field on your own laptop, and scriptable into any design loop.
A 3D magnetostatics code (from the synchrotron world) built for open-boundary problems with large air gaps — no air meshing. It was made for undulators, wigglers, Halbach arrays and multipole accelerator magnets, which makes it unusually well-suited to patterned permanent-magnet structures.
The industry 2D/3D electromagnetic FEA tools: ANSYS Maxwell, COMSOL (AC/DC Module, coupled to thermal and structural), and Siemens Simcenter MAGNET (formerly Infolytica). All take arbitrary 3D magnetization — motors, actuators, Halbach and multipole geometries — at a real licensing cost.
FEA for magnetic, electric, thermal and stress problems with coupling (Tera Analysis). The Student Edition is full-featured but mesh-capped, which is plenty for learning and small 2D or axisymmetric multipole studies before you pay for the professional tiers.
K&J Magnetics’ free browser calculators for pull force, field, gap and unit conversion — grounded in their own test data, not just theory. Single-magnet and gap geometry (not multipole), but the fastest sanity check on “will this hold?” before you simulate anything.
The books below range from one bedside read to the references on an engineer’s shelf. The ones that actually treat patterned and multipole fields are marked.on reading about magnetism
book · popularDriving Force
The Natural Magic of Magnets. The classic, genuinely readable history-and-science of magnets — lodestones to maglev to MRI, with the economics and culture woven in. If you read one book here for pleasure, read this one.
James D. Livingston · Harvard University Press, 1996 · Amazon
book · popularMagnetism: A Very Short Introduction
A crisp, 140-page tour from Galvani and Faraday through Maxwell, relativity, and magnetism’s role in modern computing and storage. The fastest honest grounding for a general reader before the heavier texts.
Stephen J. Blundell · Oxford University Press, 2012 · Amazon
reference · multipoleMagnetism & Magnetic Materials
Coey’s book is the modern standard graduate text — theory plus the practical reference data an engineer actually needs, and strong on permanent-magnet field structures. Pair it with Permanent Magnetism (Skomski & Coey, 1999) for the dedicated permanent-magnet theory.
J. M. D. Coey · Cambridge University Press, 2010 · Amazon
Furlani’s engineering text: magnetostatic analysis with sixty-plus worked examples, explicitly covering the design of rare-earth permanent-magnet structures. One of the few references that will actually help you shape a patterned field into a part.
Tanabe’s is the practical bible of multipole magnet design — dipoles, quadrupoles and sextupoles for particle accelerators. If your interest in “many poles, arranged” runs all the way to beamline hardware, this is the one. Companion: Clarke’s Undulators and Wigglers (Oxford, 2004) for Halbach-array insertion devices.
reference · classicIntroduction to Magnetic Materials
Cullity & Graham’s long-standing teaching reference on magnetic quantities, measurement, and materials — rare-earth magnets, amorphous alloys, magnetometry. Materials-and-fundamentals focus rather than patterned design, but the book most courses are built on. The deep reference is the Coey & Parkin Handbook (Springer, 2021).
B. D. Cullity & C. D. Graham · Wiley-IEEE, 2008 · Amazon
Index
by term · the back of the book
Terms, parts, people and makers, each pointing to the section where it lives. Roman numerals are the ten sections above.
A–B
Align (behavior) II
Alignment pairs IV
Attach (behavior) II
Barker code I
Behaviors, the eight II
Brass constraining rod III
Brockhaus (magnetizers) VI
C–D
Cedar Ridge Research VIII
Coded magnet I
Coded identity / lock-key II
Correlated Magnetics Research VIII
Correlation trick I
Demo Kit (1002031) III
Detent (behavior) II
Detents, rotational IV
Device mounts IV
E–H
Earnshaw’s theorem I
Exponential near field I
FerroSpring (distributor) III
Fullerton, Larry VIII
Halbach array I
Hold / holding force II
I–M
Industrial Magnetics Inc. VI
IEEE Magnetics Society VI
K&J pull test VII
Latch (behavior) II
MagPrinter V
Magnetizing fixture V
Max-Attach IV
Maxel I
N–P
NASA Prandtl-M VII
NdFeB / energy product I
Near field vs far field I
Patents (US 7,800,471…) VII
Pattern → behavior II
Polymagnet VIII
Polyvision software V
R–S
Roberts, Mark VIII
Shear (behavior) II
SmarterEveryDay #153 VII
Spatial force function I
Spring / standoff (1002288) IV
Spring demo III
Steel test plate III
Substrate independence V
T–Z
Torque (behavior) II
Twist-release (behavior) II
Twist-release pair (1002300) IV
Viewing film III
Vendor claims (labeled) VII
makers
EPI Magnets VI
K&J Magnetics VI
Laboratorio Elettrofisico VI
Magnet-Physik VI
Magnomatics VI
Magswitch VI
Metis Instruments VI
MPCO Magnetics VI
SDM Magnetics VI
wider field
Baumer (encoders) IX
Bunting / Goudsmit IX
Encoder rings (multipole) IX
Ferrofluid / Ferrotec IX
Flyte (levitation) IX
Geomag / Speks IX
Magnetic bearings (SKF) IX
Magnetocaloric cooling IX
Niron Magnetics IX
Phoenix America IX
Rosenberger MagCode IX
apps & books
ANSYS Maxwell X
COMSOL X
Coey (textbook) X
Driving Force (Livingston) X
FEMM X
Furlani X
K&J calculators X
Magpylib X
QuickField X
Radia X
Tanabe (multipole) X