August 2026

Search for a superconductor or levitation kit and the results run from $25 toys to four-figure lab apparatus, often described in nearly identical language. The differences are real and easy to state. This guide sorts the market into four categories...

A superconductor floating above a magnet is a demonstration. A science-fair project is an experiment. Judges — and the ISEF judging criteria they work from — reward a testable question, defined variables, controls, repeated measurements and honest uncertainty, not impressive...