I n s tr u c ti o n M a nu a l 012- 12722A ® *012-12722* Magnetic Demonstration System EM-8644B Variable Gap Magnet EM-8618 Magnetic Force Accessory EM-8642A EM-8618 Variable Gap Magnet
The EM-8644B Magnetic Demonstration System consists of the EM-8618 Variable Gap Magnet and the EM-8642A Magnetic Force Accessory. You can use the components of the system to demonstrate magnetic induction, the magnetic force on a current-carrying wire, diamagnetism, and paramagnetism.
Table of Contents Included Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 EM-8642A Magnetic Force Accessory and Recommended Equipment . . . . . . . . . . . . . 2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 About the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V ar i a bl e G ap M a gn e t iv ®
Magnetic Demonstration System EM-8644B Variable Gap Magnet EM-8618 Magnetic Force Accessory EM-8642A Adjustment Screw (2) Magnets Magnet Holder (2) Threaded Hole (1/2” by 13 thread) Pole Pieces Base Bumper (4) EM-8618 Item EM-8618 Item Variable Gap Magnet Pole Piece (2) CAUTION: STRONG MAGNETIC FIELD. Do not put the magnets close (within a few centimeters) to anything that would be harmed by a strong magnetic field, such as magnetic media, computer hard disks, or monitors.
Ma g ne t ic De m on s tr a t io n S y s t em In tr o d uc t i on The EM-8618 Variable Gap Magnet is designed to be used with parts from the PASCO EM-8642A Magnetic Force Accessory. 6 5 4 2 3 1 7 EM-8642A Magnetic Force Accessory* EM-8642A Items EM-8642A Items 1. Swing Assembly 2. Aluminum Tube 3. Glass Rod 4. Eddy Current Blade with Slits 5. Eddy Current Blade (solid) 6. Eddy Current Blade with Slots 7. Mounting Rod Spool of thread (not shown) *See the PASCO catalog or Web site at www.
E M- 8 6 44 B 012-12722A A bo u t th e E qu i p me n t About the Equipment Variable Gap Magnet The Variable Gap Magnet consists of two one inch (2.54 centimeter) diameter neodymium magnets on an iron base with adjustable magnet holders. Two flat iron pole pieces are included to provide a uniform magnetic field when needed. The gap between the faces of the two magnets can be varied from 0.5 cm to 8.9 cm by turning the adjustment screws. The base has a threaded hole for mounting on a 12.
Ma g ne t ic De m on s tr a t io n S y s t em A bo u t t he E q ui p m en t EM-8642A Magnetic Force Accessory The Magnetic Force Accessory consists of the following components: • Aluminum eddy current blades (solid, with slots, and with slits) for demonstrating magnetic induction and magnetic braking • Mounting rod for supporting the blades or the swing assembly • Swing assembly for demonstrating the magnetic force on a current-carrying wire • Aluminum tube (paramagnetic material) • Glass rod (di
E M- 8 6 44 B 012-12722A De m on s t r at i on 1 : M ag n et i c I nd u ct i on Demonstration 1: Magnetic Induction Equipment Needed Variable Gap Magnet (EM-8618) Equipment Needed Large Base and Rod (ME-9355) Magnetic Force Accessory (EM-8642A) Use the eddy current blades and the Variable Gap Magnet to demonstrate magnetic induction. Setup 1. Slide the mounting rod onto a support rod and tighten the set screw at the end of the mounting rod to hold it in place. 2.
Ma g ne t ic De m on s tr a t io n S y s t em De m on s tr a ti o n 2 : Ma g ne ti c Fo r c e on a Cu r - Demonstration 2: Magnetic Force on a Current-Carrying Wire Swing Equipment Needed Equipment Needed Variable Gap Magnet (EM-8618) Large Base and Rod (ME-9355) Magnetic Force Accessory (EM-8642A) Patch Cord, 2 (SE-9750) 12 V DC Power Supply (SE-9720A)* (Mini Generator (SE-8645) – optional) *The PASCO Hand-held Mini Generator (SE-8645) can be used as the power source instead of the DC power suppl
E M- 8 6 44 B 012-12722A De m on s t r at i on 3 : D i am a gn e ti s m an d Demonstration 3: Diamagnetism and Paramagnetism Equipment Needed Equipment Needed Variable Gap Magnet (EM-8618) Large Base and Rod (ME-9355) Magnetic Force Accessory (EM-8642A) Tape Introduction Compared to ferromagnetism, diamagnetism and paramagnetism are weak effects. However, when a diamagnetic material is placed in a strong magnetic field, it is possible to see that the material is repelled by the magnetic field.
Ma g ne t ic De m on s tr a t io n S y s t em Te c h ni c a l S u pp or t is in the equilibrium position, rotate the magnet about the axis formed by the thread. The aluminum tube will rotate with the magnet, always staying parallel to the magnetic field lines. Glass rod Aluminum tube Initial Equilibrium position position Equilibrium Initial position position Figure: Demo Setup Technical Support For assistance with any PASCO product, contact PASCO at: Address: PASCO scientific 10101 Foothills Blvd.
