| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 1A50.00 | Math Topics | | |
| 1A50.10 | radian disc | PIRA 200 | A flexible strip of plastic equal to the radius is bent around the edge of a circle. |
| 1A50.10 | radian | 1A50.10 | Show a flexible rod has a length equal to the radius of a large disc, then bend it around the circumference and mark off the radians. |
| 1A50.10 | radian | M-16a | A string is used to mark off radii on the circumference of a large disc. |
| 1A50.10 | radian disc | Disc 05-12 | A flexible strip of plastic equal to the radius is bent around the edge of a circle. |
| 1A50.30 | sine, cosine, and circle linkage | AJP 51(8),760 | Linkages connect a spot moving around a circle with spots moving orthogonally as the sine and cosine. |
| 1A50.51 | binary counter | 6-1.2 | Working model of a binary counter with a scale of 32. Construction details in the Appendix, p. 533. |
| 1A50.52 | mechanical binary scaler | AJP 32(7),645 | A mechanical binary scaler with flipping wood blocks. |
| 1A50.60 | Dirac's strings models | AJP 47(4),379 | Some mechanisms to demonstrate Dirac's strings where turning through 360 degrees will not bring it back to the initial configuration. |
| 1A50.60 | discrete linear transformation | AJP 46(10),1015 | Model of a discrete linear transformation where columns of water in a plexiglass cube are allowed to flow through a matrix plate into compartments models a discrete linear transformation. |
| 1A50.65 | sim. equations device | AJP 34(4),359 | A balancing meter stick as an analog device for solving linear simultaneous equations. |
| 1A50.70 | projection slide rule | AJP 42(5),425 | Make a projection slide rule with front and back scales mounted side by side. |
| 1A50.80 | integers as sum of reciprocals | TPT 2(5),228 | A general treatment of integer values of in the sum of reciprocals applicable to parallel resistors, series capacitors, spherical mirrors, thin lenses, etc. |