10 Amazing Magnet Gadgets!
Buy physicsfun toys on : https://bit.ly/2MOjFET Below is a list of the products that appear in the video 00:05 Hover Pen: magnetic levitation pen. A two dimensional magnetic trap suspends a ball point pen- in this design the point of the pen against a polished acrylic acts as a bearing to let the pen spin with minimal friction. 00:30 Magnetic Stirrer Vortex: whirlpool powered by a magnetic stirrer (like those in a chemistry lab) with a range of up to 2300 rpm. Investigating the intricately changing structure of the vortex in slow motion. 00:53 Universe Wheel Kinetic Toy: a rotor rolls with magnetic connections to rails in the shape of a Möbius strip. A motor in the base rocks the structure keeping the rotor in motion continuously - on each pass the rotor flips and is either on the inside of the tracks or the outside. This toy from the 1990s is a fancy version of the Whee-Lo type toys with physics of angular momentum, magnets, and rotational/ translational kinetic energy. 01:14 RIZE Spinning Ferrofluid Display: by @mtrdesigns - a colloidal ferromagnetic liquid forms a spiked helix around the threads of a steel bolt in this kinetic sculpture. The bolt contains ferromagnetic iron which channels the field from the strong neodymium magnet in the base and focuses it into the spiral configuration. The curious spiking behavior results from the interplay between magnetic force and surface tension between the liquids. 01:45 Curie Point Heat Engine: when the magnet on the end of the wire heats up to a particular temperature (the Curie point) its magnetic field is temporarily lost until it cools. This engine design uses a second magnet to pull the swinging magnet back into the heat source, in this case a tea light candle flame, once the magnetic field is reestablished. Repetition of this process creates mechanical motion as long as the heat source is fueled. 02:12 Whee-Lo: the original version of this toy from the '60s- physics of: angular momentum, magnets, rotational and translational kinetic energy, phase locking, it's all there. Who else had one of these? 02:35 Magnetic Tractor: special configuration of magnetic poles captures a dipole magnet without contact. Only works in 2D but cool nonethelessnonetheless 02:55 Magnetic Chaotic Pendulum: adding magnetic forces to gravity gives this well made pendulum chaotic motion- not random, but very sensitive to slight differences in initial launch conditions. Arranging the dipoles magnets on the base leads to different patterns of motion- here the center magnet attracts and the rest are set to repel. 03:25 Magnetic Field Viewer: visualizing the invisible- tiny iron filings suspended in viscous oil gracefully chain up along the magnetic field lines of the ferromagnet, revealing its dipole configuration. 04:43 Bismuth Diamagnetic Levitation: Element 83 (bismuth) is the most diamagnetic of the elements*. Here a small neodymium magnet is made to float between two 99% pure bismuth 10mm cubes which are held in precise configuration by friction with the parallel walls of the acrylic assembly I made. Diamagnetic substances only have magnetic fields of their own when placed in an external magnetic field from another source- here the tiny cube magnet supplies the field. Add me on Instagram: / physicsfun Music by youtube audio library 1) Interstellar Mood - Nico Staf 2) Book The Rental Wit It - Rage 3) Crock Pot 4) Cosmic Drift - DivKid
