Anti-Gravity Wheel?

Veritasium

Explanation of gyro precession: http://bit.ly/U4e8HQ More: http://bit.ly/GyroMORE Less Than: http://bit.ly/GyroLESS Equal To: http://bit.ly/GyroEQUAL Huge thanks to A/Prof Emeritus Rod Cross, Helen Georgiou for filming, Alex Yeung, and Chris Stewart, the University of Sydney Mechanical Engineering