Magnetism | Electricity and Magnetism | Physics A. Neodymium Magnet - 10mm x 10mm
Size for size the most powerful magnets to be developed. May be used for many magnetic demonstrations where intense field strength is an important criterion. For example, if a neodymium magnet is dropped down a length of copper plumbing pipe, the eddy currents generated in the copper by the passage of the magnet create a retarding field great enough to noticeably increase the time of fall of the magnet.
E8A47132 E8A47144 E8R08026
10 x 10mm 20 x 10mm 4 x 10mm
B. Ceramic Ring Magnet
Annular magnet with face poles (i.e. polarised along cylindrical axis). Internal diameter 32mm, External diameter 72mm, Thickness 10mm.
E8A47179 £3.65
C. Bar Magnets: Alnico - 50mm x 15mm x 10mm
Supplied with keepers. E8A46954 E8A46978
C
50 x 15mm 75 x 15mm
D. Iron Filings in Sprinkler Pot
Iron filings pre-packed in cardboard ‘sprinkler pots’. Contents of pot: 225g. E8A47351
225g
E. Iron Filings in a Bubble (Self Contained Unit)
The Iron filings bubble is suitable for more simple magnetic field plotting experiments in place of loose iron filings. It comprises a shallow, sealed, clear plastic vessel containing high quality fine iron filings.
It can be used on an overhead projector for demonstrations.
In use, the filings are distributed evenly over the base of the bubble by shaking or tapping. The bubble is then placed over the magnet and gently tapped to permit the filings to align themselves in the magnetic field.