Breckland Scientific 2021 Catalogue

Magnetism

Magnetic Fields

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1 EDDY CURRENT - DEMONSTRATION This kit consists of two tubes (made from copper and plastic, each about 250mm long) and two discs (a supermagnet and an aluminium disc of a similar size). When the supermagnet is dropped down the copper tube, it falls much more slowly than might be expected. The other tube/disc combinations do not show this effect, since eddy currents are only produced using the copper tube and the supermagnet. Cat No. Description Price Per MFL-150-100 Eddy Current Demonstration 16.63 set 2 SEARCH COIL - STANDARD This Search Coil is designed to detect fluctuating magnetic field. It comprises a 3,200 turn coil mounted on a Perspex handle and is terminated with stackable 4mm plugs. In use the search coil acts like the secondary of a transformer to detect fluctuating magnetic fields. It may be used to measure field strength and shape and may also be used to demonstrate transformer action. The search coil is designed to be connected to either an oscilloscope or a 200 mV a.c meter (or multimeter). Cat No. Description Price Per MFL-375-150 Search Coil 43.90 ea. 3 LASCELLS SEARCH COIL - SUPERIOR A 3300 turn, 25mm diameter coil on a plastic handle for investigating changing magnetic fields. In use the device is connected to an AC millivoltmeter or oscilloscope by means of the 4mm flying leads. Cat No. Description Price Per MFL-385-100 Search Coil 50.68 ea. 4 LASCELLS GAUSS GUN The Gauss Gun provides a safe but dramatic demonstration of the acceleration of a body in a magnetic field and the conservation of momentum. It uses groups of high strength neodymium magnets to accelerate steel ball bearings with the whole assembly contained in a closed, transparent plastic tube for safety. A great discussion experiment on the nature and strength of magnetic fields, momentum, conservation of energy etc. Cat No. Description Price Per MFL-135-100 Gauss Gun 30.92 ea. 5 MAGNAPROBE MK.II Magnetic field indicator is a small bar magnet fully suspended in a gimbal mounting and is designed to show the three dimensional nature of a magnetic field. Cat No. Description Price Per MFL-350-100 Magnaprobe Mk. II 10.23 ea. 6 FERRO FLUID Consists of micron size magnetic particles (magnetite) in a mineral oil. Particles are coated in a surfactant which prevents them clumping together. When a magnet is in close proximity the magnetic particles in the Ferrofluid take up the shape of the magnetic field. Supplied in a plastic jar containing 10ml of Ferrofluid and a rare earth magnet. Cat No. Description Price Per SMP-150-100 Ferro Fluid 10.82 ea. 7 PYROLYTIC GRAPHITE LEVITATION KIT This kit contains Pyrolytic Graphite which is a remarkable material, it is a form of specially deposited graphite that has extreme diamagnetic properties. It is strongly repelled by both the N and S poles of a powerful magnet and can exhibit this behaviour by levitating over a group of rare earth (neodymium) magnets. To make the material levitate, a small piece - typically less than 1mm thick and 6mm square - is placed above a minimum of four square or circular magnets whose poles are arranged to give an alternate N/S pole configuration. This kit contains 16 magnets (4x4 matrix) together with a steel base plate and a sample of graphite. Cat No. Description Price Per SMP-650-150 Graphite Levitation Kit 8.45 kit

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Eddy Current - Demonstration

Search Coil

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Lascells Search Coil

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Lascells Gauss Gun

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Magnaprobe Mk.II

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Ferro Fluid

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Pyrolytic Graphite Levitation Kit

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