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Create your own lightning storm with these fascinati..
These magnets are the perfect size and strength for ..
Powerful, permanent magnets made of an alloy of alum..
Extra-strong, highly polished magnet originally used..
High-quality, extremely powerful magnets made of an ..
Use this set to compare magnet strengths, e.g., bar ..
Buy a set and save! This set of 4 powerful magnets i..
Consists of two 6 x 3/4 x 1/4" steel bar magnets wit..
Observe magnetic fields with your ears, not your eye..
Grades 9-12. With this comprehensive kit, students b..
Study the nature of magnetism and its relationship t..
Demonstrate the power of Lenz's law and magnetic ind..
Positive cathode rays pass through the perforations ..
Constructed of metal oxides. North pole is painted r..
Extremely powerful. Size, 1 1/2 x 1 x 3/8". Sold in ..