These fascinating illusion wires are seemingly never-ending. As they are pulled apart they appear to be untwisting from each other, but they never come apart! Are the wires getting longer? Is it magic? This fun toy can be used to engage students and drive learning about optics, the sense of sight, and the eye-brain connection.
• Some assembly required
• Comes with instructions

Item 3194-01

In Stock

Nitinol (pronounced “night-in-all”) is an alloy metal; its name stands for Nickel (Ni), Titanium (Ti), and the Naval Ordnance Laboratory (NOL) where it was discovered. Bend it, then drop it into hot water and watch it return to its original shape! This crystalline metal changes phase around 45°C/113°F. You can also retrain this wire by annealing it. First bend it into the desired shape, heat it to a dull red glow along the entire length, and then cool it by immersing it in water. After cooling, the wire can be deformed but will instantly return to its newly trained shape when dunked into hot water!
• Comes with a Teacher’s Guide • Standard transition temperature: very hot tap water or 45°C/113°F
• Spring Coil inner diameter: 20 mm
• Pitch: 1 mm (spacing between loops)
• Approx. height of coiled spring 0.5″
• 18″ L x 0.75 mm Dia.

Item 1001-18-S

In Stock

Nitinol (pronounced “night-in-all”) is an alloy metal; its name stands for Nickel (Ni), Titanium (Ti), and the Naval Ordnance Laboratory (NOL) where it was discovered. Bend it, then drop it into hot water and watch it return to its original shape! This crystalline metal changes phase around 75°C. You can also retrain this wire by annealing it. First, bend it into the desired shape, heat it to a dull red glow along the entire length, and then cool it by immersing it in water. After cooling, the wire can be deformed but will instantly return to its newly trained shape when dunked into hot water!
• Comes with a Teacher’s Guide
• Other lengths available (10 ft, 50 ft)
• Size: 1 ft L x 0.5 mm thick

Item 1001-01

In Stock