| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 3B22.00 | Standing Waves | | |
| 3B22.10 | Melde's vibrating string | PIRA 200 | Drive one end of a string over a pulley to a mass with variable frequency SHM |
| 3B22.10 | Melde's | 3B22.10 | A jigsaw drives a rope at variable speed. |
| 3B22.10 | Melde's | Sa-9 | A DC motor is driven at variable speeds to generate standing waves on an attached rope. |
| 3B22.10 | Melde's | 18-7.1 | A 3 m rubber tube with a variable speed drive and high intensity strobe. |
| 3B22.10 | Melde's | 18-5.1 | A string under tension is driven to show standing waves. |
| 3B22.10 | Melde's | S-35 | Use a length of white clothesline and a mechanical vibrator to generate standing waves. |
| 3B22.10 | three tensions standing waves | Disc 09-27 | Three strings driven by the same driver have weights of 0.9:2:8 to produce the first, second, and third harmonics. |
| 3B22.11 | Melde's driver | AJP 43(10),926 | Bend the clapper away from the magnet of a 110 V ac buzzer. |
| 3B22.11 | Melde's driver | AJP 33(10),856 | Use a dc to ac vibrator-converter for generating ac power from batteries to drive the string. |
| 3B22.11 | driving mechanism for Melde's | AJP 33(4),340 | A quiet double solenoid driver for Melde's operates at line frequency. |
| 3B22.11 | speaker driven string | AJP 50(10),910 | Couple a loudspeaker cone to a string for a variable driver. Use two drivers to show beats. |
| 3B22.11 | Melde's driver for OH projector | AJP 50(12),1170 | A quiet electromagnetically driven string driver suitable for use on the overhead projector. |
| 3B22.11 | Melde's with fluorescent light | AJP 36(1),63 | On the colors seen with fluorescent light illumination. |
| 3B22.11 | hair cutter driver | 18-7.6 | A hair cutter powered with a variac is modified to drive a string. |
| 3B22.11 | Melde's | S-2b | A Melde's driver. Reference: AJP 20(5),310. |
| 3B22.12 | Melde's - tuning fork | Sa-10 | A tuning fork drives a string into resonances with varied tension. |
| 3B22.12 | Melde's - tuning fork | S-36 | Vary the tension of yarn driven by an electrically driven tuning fork. |
| 3B22.12 | tuning fork Melde's | S-2c | An electrically driven tuning fork sets up standing transverse waves in a string. |
| 3B22.13 | piano wire | 18-7.5 | A motor driven, variable frequency oscillator gives transverse impulses to a stretched piano wire. |
| 3B22.14 | electromagnetically excited wire | 18-5.5 | An electromagnet is placed at the center of a stretched wire and connected to a signal generator to produce several modes of oscillations. |
| 3B22.14 | AC driven wire | 18-7.4 | The tension is changed on a wire carrying AC in the field of a magnet and the fundamental and various harmonics are shown. |
| 3B22.14 | wire standing waves | S-37 | Use iron wire and an electromagnet or AC current and a magnet to generate standing waves in wire. |
| 3B22.15 | three tensions standing waves | PIRA 1000 | |
| 3B22.15 | rubber tube standing waves | Disc 09-28 | A long rubber tube driven by a variable speed motor. |
| 3B22.16 | phase changes in Melde's | AJP 43(12),1112 | Show two positions of max amplitude, one red and one blue, with fluorescent lighting and a vibrator synchronous to the lamp flutter. |
| 3B22.17 | mutiple Melde's | S-2e.1 | The same motor drives two horizontal strings and one vertical string of equal length. All strings are in resonance. |
| 3B22.18 | AC heated stretched nichrome wire | 18-5.4 | Standing waves are produced by stretching nichrome wire and heating with AC. |
| 3B22.21 | air driven rubber tube | 18-5.3 | Standing waves are produced in a stretched rubber tube by a jet of air. |
| 3B22.22 | nice wave machine | S-33 | A weighted rubber tube is hung horizontally from the ends of short pivoted and counterweighted bars. Friction adjustments at the pivots allow any amount of energy to be absorbed. When driven from one end, many wave properties may be shown. |
| 3B22.25 | stroboscopic projection with wire | 18-5.11 | Waves in a wire are stroboscopically projected. |
| 3B22.25 | projecting a standing wave on a wire | 18-5.10 | A rotating mirror arrangement projects the shape of a standing wave on a wire. |
| 3B22.30 | Shive /Bell Labs standing waves | PIRA 500 | |
| 3B22.30 | Bell Labs standing waves | 3B22.30 | Excite the Bell Labs machine at various rates to obtain standing waves with one, two, and three nodes. |
| 3B22.30 | standing waves | Disc 09-26 | Drive the Shive wave machine by hand to produce standing waves. |
| 3B22.40 | vertical vibrating bar | PIRA 1000 | |
| 3B22.40 | vertical vibrating bar | AJP 48(9),786 | Vibrate a yardstick or meterstick by hand through the fundamental and first overtone. Due to the rule, the position of the node can be measured easily. |
| 3B22.40 | transverse waves in a rod | 18-7.3 | Hold a long rod at the center or at an end and vibrate it at the natural frequency with the other hand. ALSO - chalk squeak and breaking. |
| 3B22.41 | vertical steel bar Melde's | S-135 | A vertical steel bar is clamped vertically and driven mechanically through the first three harmonics. |
| 3B22.45 | free boundary hanging tube | 18-5.9 | A support designed to excite a hanging tube while maintaining free boundary conditions. |
| 3B22.50 | slinky standing waves | PIRA 1000 | |
| 3B22.50 | slinky standing waves | 3B22.50 | |
| 3B22.50 | slinky standing waves | Disc 09-25 | Drive a hanging slinky by hand to produce standing waves. |
| 3B22.51 | hanging spring standing waves | AJP 55(7),666 | A solenoid drives a magnet attached to a hanging spring. |
| 3B22.51 | hanging slinky standing waves | S-2e.2 | A motor oscillator drives a hanging slinky. |
| 3B22.52 | driven jolly balance spring waves | 18-5.2 | A tuning fork drives a jolly balance spring to produce standing longitudinal waves. A lantern projector with a rotating disk slows the motion stroboscopically. |
| 3B22.60 | longitudinal standing waves | PIRA 1000 | |
| 3B22.60 | longitudinal standing waves | Disc 09-24 | Excite the Pasco longitudinal waves machine to get standing waves. |
| 3B22.65 | magnetostrictive standing waves | 18-5.8 | A feedback circuit to a coil around a nickel rod drives magnetostrictive standing waves indicated by a ball bouncing at one end. |
| 3B22.70 | soap film oscillations | PIRA 1000 | |
| 3B22.70 | soap film standing waves | 18-5.7 | Large wire frames dipped in soap film are manipulated by hand to produce standing waves. Nice pictures. |
| 3B22.75 | standing waves | S-105 | Use a sensitive flame to detect standing waves from a loudspeaker between two boards. |
| 3B22.90 | crank slide | PIRA 1000 | |
| 3B22.90 | crank slide | 3B22.90 | Same as Sa-8. |
| 3B22.90 | traveling and standing wave models | Sa-8 | A projection device that gives the appearance of waves traveling in opposite directions and the sum of the waves. |
| 3B22.90 | crank wave model | S-25 | Wire helixes turned about their axes in a lantern projector appear as waves traveling in opposite directions. An additional bent wire shows the resulting standing wave. |
| 3B22.99 | analog computer simulation | AJP 44(3),284 | An analog computer used with a dual trace storage scope to demonstrate traveling and standing waves. |