| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 1L20.00 | Orbits | | |
| 1L20.10 | gravitational well - rubber diaphragm | PIRA 1000 | |
| 1L20.10 | gravitational well | 8-8.2 | On making a rubber diaphragm type potential well. |
| 1L20.12 | gravitational well on OH proj | 8-8.1 | Making a Lucite 1/R surface for use on the overhead projector. |
| 1L20.14 | elliptic motion | M-131 | A ball rolling in a funnel or cone. |
| 1L20.16 | gravity surface | TPT 14(8),506 | Using the Playskool Baby Drum Drop as a gravity surface. |
| 1L20.17 | orbits in a wineglass | AJP 30(7),531 | A properly shaped wine glass is used with ball bearings to show radius to orbit period, orbit decay, etc. |
| 1L20.18 | orbits in a spherical cavity | 15-1.16 | Derivation of the period of a ball orbiting in a spherical cavity. Strobe photography verifies as a demo. |
| 1L20.30 | rotating gravitational well | 8-8.3 | A ball placed in a rotating potential well demonstrates the path of a satellite. Use a variable speed motor to show escape velocity. |
| 1L20.31 | escape velocity | M-17e | A Fake. Pour water into a can with a hole in it and then twirl around until "escape velocity" is reached. Show no water remains. |
| 1L20.32 | satellites | 8-8.9 | A very complex satellite simulator. |
| 1L20.35 | spin-orbit coupling | TPT 16(5),316 | A spinning ball orbits in a watch glass with increasing radii until it escapes. |
| 1L20.36 | film "Motion of Attracting Bodies" | PIRA 1000 | |
| 1L20.36 | "Motion of Attracting Bodies" film | 1L20.36 | Meeks film, 6:30 min. Computer animated. Covers Newton's laws, earth's gravity variations, satellite and binary orbits. |
| 1L20.40 | conic sections | PIRA 1000 | |
| 1L20.40 | conic sections | 1L20.40 | A dissectible cone is cut several ways to give a circle, ellipse, parabola, and hyperbola. |
| 1L20.40 | sections of a cone | Disc 07-21 | The standard wood cone. |
| 1L20.45 | drawing ellipses | M-17b | The two nail and string method for ellipse drawing. |
| 1L20.50 | ellipse drawer | PIRA 1000 | |
| 1L20.50 | ellipse drawer | 1L20.50 | |
| 1L20.50 | ellipse drawer | 1L20.50 | An aluminum bar with adjustable pegs and a loop of string for drawing the ellipse. |
| 1L20.51 | ellipse drawing board | Disc 07-22 | The two nail and string method of drawing on paper. |
| 1L20.55 | orbit drawing machine | AJP 44(4),348 | Design for orbit drawing machines for use on the overhead projector. A simple one draws elliptical orbits only, an elaborate one draws general Coulomb orbits. |
| 1L20.61 | dry ice puck orbits | 10-2.15 | A dry ice puck on a large table is tethered through a hole in the center to a vacuum ping pong ball device under the table that gives an inverse square law force. Construction details p.573. |
| 1L20.62 | dry ice puck Kepler's law | 10-2.16 | A dry ice puck has a magnet mounted vertically with a second one below the table which may be inverted to show both attraction and repulsion. |
| 1L20.62 | dry ice puck Kepler's law | M-17c | A strong magnet is placed under the air table and a magnetic puck with a light is photographed. |
| 1L20.62 | air table Kepler's laws | M-17d | With a strong magnet below the table, take strobe photos of a magnetic puck to demonstrate equal areas. TPT 8(4),244. |
| 1L20.63 | dry ice puck Kepler's law | 10-2.17 | Motor at the center of the table with a special pulley arrangement. |
| 1L20.64 | areal velocity conservation | AJP 34(11),1063 | Analyze a strobe photograph of one cylindrical magnet on dry ice approaching another and deflecting. |
| 1L20.65 | fancy air puck Kepler's law | AJP 37(11)1134 | The puck has a variable thruster and is of variable mass. A Peaucellier linkage is used to apply central force. |
| 1L20.66 | "gravity" with magnetic field | AJP 29(8),549 | Drop a ball near a magnetron magnet and watch it curve around about 150 degrees. |
| 1L20.69 | inverse square law motion | M-130 | Pointer to A-62, A-63. Very crude models of planetary motion. |
| 1L20.71 | film "Planetary Motion and Kepler's Laws" | PIRA 1000 | |
| 1L20.71 | "Planetary Motion and Kepler's Laws" | 1L20.71 | Meeks film, 8:45 min. Computer Animated. Shows orbits of the planets, covers Kepler's second and third laws. |