monopoletech

A magnet has two poles. We are looking for the one that has only one. It has never been found. This is the project that keeps looking.

descend

The half you can't cut off.

field of a true monopole — every line points out, none returns

Cut a bar magnet in half and you get two magnets, each with a north and a south. Cut those in half and the same is true again. The dipole is not made of separable poles — it is a circulation. There is, in ordinary matter, no such thing as a lone north.

In 1931 Paul Dirac showed that if even one magnetic monopole exists anywhere in the universe, the quantization of electric charge follows as a theorem. The condition is exact: eg = nℏc⁄2. A single isolated pole would explain why charge comes in clean integer multiples. That is a strong reason to look.

It has still never been observed.

Where we've looked.

Six decades of dedicated searches across accelerators, ice, the upper atmosphere, and ancient rock. Tap a badge to read the result.

Every result so far.

The scrapbook page nobody frames. Each foil is a non-detection. Each is dated. Tap one for the citation.

What you'd need to find it.

Nothing here is a wish list. These are the gaps the current limits leave open — the places a monopole could still be hiding without contradicting a single published result.

A detector with the sensitivity of an induction loop but a hundred times the aperture — enough to confirm or kill a Cabrera-rate signal in one year, not ten.
Coverage of the intermediate-mass window between collider-accessible (a few TeV) and grand-unified scales (10¹⁶ GeV), where no terrestrial experiment can produce them and cosmic searches are flux-limited.
A clean handle on monopoles moving at a few thousandths of light speed — too slow for Cherenkov light, too fast for trapping — the velocity band where every method is weakest.
Two independent loops, running simultaneously, so the next single event is never again a sample of one.
Patience. The flux limits improve roughly as the square root of exposure time. The project is, structurally, a long one.

north only — still.