Models of rubric: Confocal systems, conics Model 27 Single-leaf hyperboloid and confocal ellipsoid Model 28 Single-leaf hyperboloid and confocal double-leaf ellipsoid Model 29 Ellipsoid and confocal double-leaf hyperboloid Model 30 Ellipsoid, confocal single- and double-leaf hyperboloid Model 1160 Slide: Bending circles and evolute of the ellipse Model 1161 Slide: The bending circle as geometric limes Model 1169 Slide: Focus of the ellipse Model 1225 Slide: Theorem of Dandelin Model 1420 Slide: Kinematic generation of an ellipse Model 1421 Slide: Kinematic generation of an ellipse
Göttingen Collection of Mathematical Models and Instruments
Göttingen Collection of Mathematical Models and Instruments
Single-leaf hyperboloid and confocal ellipsoid
Single-leaf hyperboloid and confocal double-leaf ellipsoid
Ellipsoid and confocal double-leaf hyperboloid
Ellipsoid, confocal single- and double-leaf hyperboloid
Slide: Bending circles and evolute of the ellipse
Slide: The bending circle as geometric limes
Slide: Focus of the ellipse
Slide: Theorem of Dandelin
Slide: Kinematic generation of an ellipse
Slide: Kinematic generation of an ellipse