Monthly Math Hour at the University of Washington

Dimitri Zvonkine — links

• Quadrilateral linkage
• Pistons
• Rotation to translation (approximate)
• Peaucellier's inversor
• Peaucellier's inversor practical use
• Octahedral sphere
• Rotating 4D cube
• 4D cube on torus
• Парадоксальный механизм
• Механизм с остановкой
• Стопоход