Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Year | Description |
| 1997 | Invention patented by James Edward Nettle on August 28th, 1997. Abstract: A double pendulum device displaying regular and chaotic behavior simultaneously when the pendulums are in motion, comprising: a beam (55) mounted symmetrically to a vertical surface about a pivot point consisting of a friction reducing insert (56) with a fastener (57) passing through it for attachment of the beam to said vertical surface and allowing free rotation of the beam (55) about its horizontal axis; a long pendulum (44) attached near one end of the beam (55) with a fastener (46) passing through a friction reducing insert (45) installed in and near one end of the long pendulum and a spacer (47), said long pendulum (44) being free to rotate about a horizontal axis; an arm (66) fixed at the opposite end of beam (55) from long pendulum (44) in such a manner as to become a ninety degree extension of beam (55) directionally equal to the long pendulum (44) when the pendulum device is static; a short pendulum (77) attached near the opposite end of the arm (66) from said arm's attachment to the beam (55) with a fastener (79) passing through a friction reducing insert (78) installed in and near the end of the short pendulum (77) and a spacer (80) that places the short pendulum (77) in the same vertical plane as the long pendulum (44), said short pendulum (77) being free to rotate around a horizontal axis; and the long pendulum (44), beam (55), arm (66), and short pendulum (77) each having sufficient mass to provide inertial power for a plurality of swings of the pendulum device after a starting force is applied, said pendulum device always having its beam (55) parallel to the ground when static. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
