Thursday, 19 June 2014 10:20

## G3-04: SHIVE WAVE MACHINE - STANDING WAVES

• ID Code: G3-04
• Purpose: Demonstrate standing waves.
• Description:
Standing waves can be generated with either (1) both ends fixed, (2) one end fixed and one end free, or (3) both ends free. You can use either your hand or the motorized drive; your hand possesses better feedback for small adjustments in frequency.
A metronome is available upon request for comparing the frequencies of various harmonics, or you can time them using the classroom clock or computer.
##### Engagement Suggestion
• Ask students to make predictions before each configuration of the device. Will fixed ends, free ends, or one open and one free end have the longest wavelength fundamental?
##### Background
A standing wave oscillates in time, but the peaks do not travel in space. A standing wave can be created in a mechanical medium of fixed length with an oscillation at that medium's natural frequency, or a multiple thereof.
• Availability: Available

• #### G3-02: SHIVE WAVE MACHINE - SUPERPOSITION OF PULSES

Demonstrate constructive and destructive interference using pulses. Read More
• #### G3-03: SHIVE WAVE MACHINE - REFLECTION OF PULSES

Demonstrate reflection of pulses from fixed ends and free ends. Read More

• #### G3-05: SHIVE WAVE MACHINE - PARTIAL REFLECTIONS

Show that a wave will be partially reflected at a point where the impedance changes. Read More
• #### G3-06: SHIVE WAVE MACHINE - IMPEDANCE MATCHING

Show that no reflection occurs when the impedance of the load (absorber at right) matches the impedance of the wave machine. Read More
• #### G3-07: SHIVE WAVE MACHINE - TAPERED TRANSFORMER

Useful for obtaining a reasonably good impedance match between the two large segments of the Shive machine. Read More
• #### G3-08: SHIVE WAVE MACHINE - FABREY-PEROT INTERFEROMETER

Demonstrate the mechanical analog of the optical Fabrey-Perot interferometer. Read More
• #### G3-09: SHIVE WAVE MACHINE - FREQUENCY FILTERING

Demonstrate the mechanical analog of the optical Fabrey-Perot interferometer. Read More
• #### G3-10: SHIVE WAVE MACHINE - BRANCHING

Demonstrate branching and recombining with two wave machines in parallel. Read More
• #### G3-11: SHIVE WAVE MACHINE - RESONANCE ABSORPTION

Demonstrate resonance absorption of wave energy by a mass-on-spring system. Read More
• #### G3-20: WAVE APPARATUS

Demonstrate transverse and longitudinal wave motion. Read More

• #### G3-23: TRANSVERSE WAVES ON A LONG SPRING - FREE END

Show reflections at a free end. Read More

• #### G3-25: SLINKY ON LECTURE TABLE - IMPEDANCE MISMATCH

Show partial reflections and dependence of wave speed on density of the medium. Read More
• #### G3-26: AIR TRACK - LONGITUDINAL WAVES

Demonstrate longitudinal waves with a series of spring-coupled air track gliders. Read More
• #### G3-27: AIR TABLE - TRANSVERSE AND LONGITUDINAL WAVES

Demonstrate transverse and longitudinal waves using an air table. Read More

Shows longitudinal and transverse traveling waves & standing waves Read More
• #### G3-29: SUSPENDED SLINKY - PORTABLE

Show longitudinal and transverse traveling waves and standing waves. Read More
• #### G3-31: Spring and Horns

Show sound waves from a mechanical wave Read More
• #### G3-41: WAVE MODELS - PROJECTION

Demonstrate standing waves, travelling waves, and superposition of waves. Read More
• #### G3-42: TORSIONAL WAVES

Demonstrate wave phenomena such as traveling waves, standing waves, and reflection of waves Read More
• #### G3-43 WHIP

Illustrates transverse wave motion. Read More
• #### G3-45: RESONANCE OF WIRES

Show standing waves in heavy wires fixed at one end. Read More
• #### G3-46: STANDING WAVES IN A WIRE LOOP

Illustrate circular standing waves; to use as a model of stationary states in atoms corresponding to standing waves of electrons Read More
• #### G3-51 ROPE WAVE GENERATOR - FREQUENCY VS. WAVELENGTH

Show standing waves in heavy wires fixed at one end. Read More
• #### G3-52: ROPE WAVE GENERATOR - ROPE TENSION VS WAVELENGTH

Observe the change in wavelength of a vibrating rope as the tension is varied. Read More
• #### G3-53 STANDING WAVES IN A STRING

Demonstrates standing waves on a thin string Read More
• 1