PhiTOP: Spinning aluminum top shaped like an egg.

The PhiTOP, Gyroscopes & Tops: Educational Innovations, Inc.

🔬#MESExperiments 32: Comparing Tippe Top, Phi Top, and Gyroscope

The PhiTOP is an egg-shaped top (a prolate ellipsoid) that can be spun by hand to stand up on end. This is a fascinating demonstration used by Nikoli

Phi Top

Wind Gyro, Gyroscopes & Tops: Educational Innovations, Inc.

PhiTop Physics Egg for Science Geeks

PhiTop Physics Egg for Science Geeks

Phitop Stress Relieving Ellipsoid Spinning Top Physics Marvel and

Results for a particular spin showing (a) the angle of inclination

Tesla's Egg of Columbus: an aluminum ellipsoid egg (PhiTOP

Tesla's Egg of Columbus: a copper ellipsoid egg (PhiTOP

PhiTOP: Spinning aluminum top shaped like an egg.