Page 18 - Demo

MAGNETISM & ELECTROMAGNETISMIntroduction to Electromagnetism—Student Laboratory KitExplore magnetic fields created from electric currents in wires, the magnetic power of an electromagnet and Faraday’s law by dropping a magnet through a solenoid to generate electric current and detecting it with a simple student-assembled galvanometer of magnet wire and a compass. Students experience how varying magnet movements affect the strength of a generated electric current. Includes detailed Teacher Notes and repro-ducible student handouts. AP6271 I $90.45Magnetic Field DemonstratorPermanently sealed transparent acrylic case contains fluid and fine iron filings so magnetic fields can be demonstrated on an overhead projector without any mess. Place a magnet beneath and watch magnetic force lines become visible through the clear chamber. The bright light of the overhead projector magnifies the clear lines of force. Try several arrangements. The rugged device measures 12 x 22 x 1 cm.AP4748 I $31.90Magnet Kit, Economy ChoiceDemonstrate important magnetism proper-ties with a ring, bar or horseshoe magnet. Show how some metals are magnetic while most are not and why a compass points north. Use included iron filings to reveal invisible magnetic field lines around the magnets and illustrate the magnetic strengths of different magnets. Includes a 26-page activity manual to guide you through the demonstrations.AP6710 I $32.90Magnet WireHigh-quality enameled copper wire neatly packaged on 125-foot spools. Nonconductive, thin enamel coat allows for tightly wrapped coils. Perfect for winding electric motors, transformers, solenoids or electromagnets. 22 gauge, maximum voltage 100 V DC.AP6204 I $6.85Bar MagnetsStrongly magnetized 6” steel bar magnets come with North and South poles permanently inscribed. Magnets are available singly or in pairs, with optional red paint on the North poles. Keepers are included with the painted pair of magnets.Mega-MagnetThe very powerful Mega-Magnets are from salvaged computer parts and may have a chip or two in them. While they may not always look pretty, they are as strong for their size as any magnet gets! Nine fun activities are included with each magnet. Dimensions are 1¼” L x ¾” W x ½” H.AP1738 I $20.35MagnetizerSave by remagnetizing old magnets with this high-powered magnetizer. The magnetic field produced completely magnetizes soft steel and iron materials. Unit has two holes, polar-ized North and South, that accept most bar or horseshoe magnets. Typical magnets are remagnetized in several seconds once aplpying power. Includes complete operating instruc-tions and three magnet keepers for completing contact points on uniquely shaped magnets.AP5662 I $186.00CATALOG NO.DESCRIPTIONPRICE/EACHAP9262Bar Magnet, Single, Steel$19.90AP9260Bar Magnets, Pair, Steel, Unpainted 11.30AP9040Bar Magnets, Pair, Steel, Painted23.30