Flux detector sheet 150x150 mm.

This is a bigger flux detector sheet for displaying magnetic fields when you work with bigger magnets.

Flux detection helps you find weak spots on things like magnetic sheets or show the magnetic field of your permanent magnets or find the weak spots on your magnetic sheet.

How do flux detectors work?
Small nickel particles collect and show a dark color where the magnetic field is strongest and at the same angle as the sheet. The light marks on the sheet show where the magnetic field is parallel to the sheet. The sheet is often used to find out the direction of the poles of a magnet (not north vs. south but whether it is axial or diametrical magnetism). But it's also used for magnets that have been hit and for magnetic sheets that have been exposed to permanent magnets to check if the magnetic field is weak.

Size: 15 x 15 cm.
Color: Green .

The sheets are sold individually and are available in other sizes.

A flux sheet is the smart way to make otherwise invisible magnetic fields visible.