Click here to download the catalog as a PDF file. To view this site you need Adobe Flash Player and your browser must allow javaScripts. Go here to get the latest Flash Player. Magnetism Giant Neodymium Magnet The most powerful magnet on earth is now available in a larger size. This 7/8" x 1" neodymium-iron-boron compound cylinder packs approximately ten times the power of our smaller magnet. It truly takes the “tradition” out of traditional demonstrations of magnetism. Magnetic Field Observation Box Forget the mess of iron filings and the constraints of two-dimensional representations of magnetic fields — this self-contained device reveals the proper, three-dimensional nature of magnetic lines of force. The sealed acrylic box contains iron filings suspended in a silicone oil solution. A cylindrical magnet (included) is dropped into a central chamber to create the three-dimensional field. Other magnets can be applied to the sides or ends of the box to demonstrate interesting interactions between fields. Although primarily designed for individual study, the observation box can also be placed on an overhead projector for a two-dimensional demonstration of the field. (4" x 2" x 2") P8-8001 Observation Box $105 P8-8001-01 Replacement Magnet $8 P8-1124 $29 39 Amazing Experiments with the Mega-Magnet (not pictured) By Brian Rohrig Perform dozens of astounding effects with the world’s most powerful magnet! Use your neodymium magnet to stop a clock, attract a dollar bill, or remove the iron from cereal! 43 pages. P8-1120 $12.95 Strobe Revolution The Revolution’s magnetically levitating axle spins in a state of near-perpetual motion, with just a gentle spin from your fingers! This latest model incorporates two LED’s that flash with the spinning of the levitating axle, providing spectacular patterns, stop motion effects, and reverse rotation illusions. Batteries, which power only the LED’s, are included. 2-1⁄2" x 5" x 3" deep. P3-6000 $17 Iron Filings These economical filings are still available for teachers on a tight budget. (500 grams) Magnetic Chips Avoid Iron Powder Mess! These pieces of reusable zincplated iron wire replace the messy, rust-prone iron powder typically employed in demonstrations of magnetic fields. The short pieces of wire align themselves linearly to provide an excellent representation of magnetic lines of force. Use them in any demonstration requiring clear, curvilinear force lines. 50 grams packaged in a reusable storage vial. P8-1140 $12 6 or more $11 each GI-0210-1 $5.95 Neodymium Magnets This neodymium-iron-boron magnet is, for its size, the most powerful magnet on earth! It’s hard to comprehend its incredible power — a pair of these half-inch disks cannot be separated by a direct pull, and even sliding them apart is a difficult process. One magnet will prevent a second from falling, even when separated by the width of a human hand. Drop a joined pair down a 3/4" copper tube and challenge your students to explain the resulting phenomenon. This magnet is strong enough to reveal the presence of magnetic substances, even in the printing ink used in paper money! We supply two magnets, each one-half inch in diameter by one-quarter inch thick, which can be used for a variety of unusual magnetic experiments. Included with each pair is an instruction sheet with information on care and suggestions for experiments. P8-1123 $15 pair 3 or more $13 pair Magnetic Marbles String your students along with these fascinating toys. Each colored marble contains both a north and a south pole and, by determining the configuration, students can construct a marble pyramid! Children and adults alike may play for hours creating infinite variations on traditional magnetic demonstrations. P8-1122 Pkg of 20 20 pkgs or more 44 $3.95 $3.50 each 1-800-367-6695