STEM BOX: Levitation with Space Age Materials (Ages 12&Up with Adult Supervision) brain-teaser check out this Veritasium video

check out this Veritasium video from early 2023:

including visible light (such that it appears very white when used as a white pigment for paints)

How Differential Gear works (BEST Tutorial)

We find the tiniest wire (AWG 50) to be barely visible

although it has been proposed that they be used in the investigation of planet Mars

STEM BOX: Levitation with Space Age Materials (Ages 12&Up with Adult Supervision) brain-teaser check out this Veritasium videoMagnetic Levitation Few materials can be made to magnetically levitate stably above the magnetic field from a permanent magnet. Although you can obviously and easily achieve magnetic repulsion between any two magnets, the shape of the field causes the upper magnet to push off sideways, rather than remaining supported, rendering stable levitation impossible for magnetic objects (see Earnshaw's Theorem). Strongly diamagnetic materials, however, can