PhiTOP: Spinning aluminum top shaped like an egg.

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

One Minute Science

PhiTOP: Spinning Aluminum Top Spin PhiTOP and watch it go on

Learn More — The PHITOP

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

Demonstrating a cool spinning ellipsoid called a phi top - Boing Boing

PhiTOP - Art of Play

Phitop Stress Relieving Ellipsoid Spinning Top Physics Marvel and

PhiTOP Stress Relieving Ellipsoid Spinning Top Physics India

PhiTOP Magic Spinning Egg Stands Up On Its Own

Meet the topaholic – Physics World

PhiTop Physics Egg for Science Geeks

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

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

PhiTop Physics Egg for Science Geeks