Hey, these magnets are strong! Stick one in your pocket and accidentally walk by the refrigerator, and your family will find you stuck to the door! Just one of these magnets will hold a small phone book to a steel filing cabinet (the things we do when we’re bored!). They can even detect traces of iron in an ordinary $1 bill. We need to remind you to keep these magnets away from your credit cards, computer disks, videotapes, small children and anything else of value. Recommended for children ages 8 and up.
Find Meteorites! You can use these super-strong magnets to find micrometeorites hiding in your drain spouts.
Note: Picture demonstration possible with two magnets.
- One super-strong neodymium magnet measuring 2 cm X 3 cm X 1.25 cm
- Grade 35 with approximately 40 pounds of pull
How Does It Work?
Neodymium magnets also contain Iron and Boron, making them some of the strongest magnets in the world. Magnets of all types create a magnetic field, with both a north and south pole. The magnetic field created by the neodymium magnets is so strong, it will line up to match the magnetic north and south of the earth. It makes a great compass! On a more serious note, the large magnets are so strong that they may even be dangerous if not handled properly. A pair of these magnets will leap into a deadly embrace from over 6 inches apart and may knock chips off themselves from the force of the impact. You’ll be amazed at the super strength of the magnets, but we must warn you to be careful. Any type of magnetic media will be history in the presence of one of these large neodymium magnets.
What Does It Teach?
Discover the magic of magnetic fields, friction, and the magnetic poles of the earth. U.S. dollar bills are printed with magnetic inks so that their passage from hand to hand can be traced. They are designed to prevent counterfeiting. Get a dollar and fold it in half. Hold the neodymium magnet near the bottom of the bill and notice how it attracts the iron. This could be a great magnetic demonstration for a science fair!
What is the magnetic measurement?
The official magnetic measurement is a grade of 35 and a gauss reading of 4,600.