PhiTOP

Item # P3-5010

Regular price $21.95
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Buy 6 and pay $20.60 each!

The PhiTOP is a very carefully designed top that counterintuitively stands up when spun in a horizontal plane, rises, and then settles down, spinning for 2-3 minutes.  

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The PhiTOP is a very carefully designed top that counterintuitively stands up when spun in a horizontal plane, rises, and then settles down, spinning for 2-3 minutes.  Besides being a COOL toy, the PhiTOP has unique observable traits in dynamics, electrodynamics, Lissajous Figures and a great illustration of the “Gelatinous Ellipsoid Effect”.    

Invented by astrophysicist Kenneth Brecher, the PhiTOP encourages exploration of force, mass, density, gravity, friction, and time. This elegant scientific and aesthetically pleasing top makes a perfect gift, desktop display piece, or student challenge.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Products being sold are not toys. They are for Educational / Laboratory use only. They are not for use by children 12 and under.

Resources

Features & Specs

  • A metal prolate ellipsoid that demonstrates many scientific concepts
  • When spun at high speeds on its side, it will seemingly magically shift its position upright and vertical!
  • A beautiful kinetic artwork or stress reliever
  • Excellent conversation piece or gift
  • Concave mirror base for improving spinning technique included
  • Measure approximately 2" x 1.25" x 1.25"