Objective:
To show the basic phenomena of Polymagnets, which exhibit a wide range of combinations of strength, size and special features such as alignments.
Apparatus:
Conventional Magnet (beige)
High Force Magnet (purple)
Controlled Field Magnet (orange)
Spring Magnets (pair, black)
Latch Magnets (pair, yellow)
Twist Release Magnets (pair, blue)
Spring-Latch Combo Magnets (pair, red)
Rotational Alignment Magnets (pair, green)
Metal plate (0.020” thick)
Green magnetic viewing film
Methods:
The patterns of magnetization on each magnet can be seen with the green magnet viewing film.
- Conventional Magnet (beige) – the base model.
- High Force Magnet (purple) – demonstrates unique attachment function optimized for strength. Patterns for maximum strength provide up to 5x the holding force of a conventional magnet can be seen with the viewing film.
- Controlled Field Magnet (orange) – demonstrates unique attachment function designed to limit magnetic leakage. The pattern for magnetic field control will not leak beyond the thickness of the metal. Attach to the steel plate and use the viewing film on the other side of the steel. Observe no leakage through the metal. By eliminating leakage, this sort of magnet is safe to use around sensitive items, like a compass or credit card.
- Spring Magnets (pair, black) – attract from a distance but as the two magnets reach a defined distance, the force switches to repulsion.
- Latch Magnets (pair, yellow) – repel from a distance but when the magnets are pushed together the force switches to attract and the magnets “click” or latch together.
- Twist Release Magnets (pair, blue) – create a strong holding force in the latched position, but they create a strong repel force when rotated 90° in either direction.
- Spring-Latch Combo (pair, red) – function like a spring and twist release latch. They hold tightly in the latched position. When rotated 180° they become a spring.
- Rotational Alignment Magnets (pair, green) – attach together with a repeatable and reliable alignment in 90° increments.
