Differences between revisions 1 and 8 (spanning 7 versions)
⇤ ← Revision 1 as of 2013-06-20 19:37:22 →
Size: 1647
Editor: srnarf
Comment:
← Revision 8 as of 2018-07-18 18:49:31 → ⇥
Size: 2605
Editor: srnarf
Comment:
Deletions are marked like this. Additions are marked like this.
Line 2: Line 2:
||<:30%>[:PiraScheme#WavesSound: Table of Waves and Sound Demonstration]||<:30%>[:WSEquipmentList: Wave and Sound Equipment List]||<:30%>[:Demonstrations:Lecture Demonstrations]|| ||<30%  style="text-align:center">[[PiraScheme#WavesSound|Table of Waves and Sound Demonstration]] ||<30%  style="text-align:center">[[WSEquipmentList|Wave and Sound Equipment List]] ||<30%  style="text-align:center">[[Demonstrations|Lecture Demonstrations]] ||
Line 5: Line 6:
'''Topic and Concept:'''
Line 6: Line 8:
'''Topic and Concept:'''
  Wave Motion, [:WaveMotion#InterferenceOfSound: 3B55. Interference and Diffraction of Sound]		  . Wave Motion, [[WaveMotion#InterferenceOfSound|3B55. Interference and Diffraction of Sound]]

'''pira200 Listed'''
Line 10: Line 13:
 * '''Cabinet:''' [:WavesSoundCabinet: Waves and Sound (WS)]
 * '''Bay:''' [:WSCabinetRtBayA1:(A1)]??
 * '''Shelf:''' #?
Line 14: Line 14:
attachment: mainPhoto  * '''Cabinet:''' [[WavesSoundCabinet|Waves and Sound (WS)]]
 * '''Bay:''' [[WSCabinetRtBayA1|(A1 Right)]]
 * '''Shelf:''' T

{{attachment:TwoSpeakerInterference01-400.jpg}}
Line 18: Line 22:
Insert succinct description of demonstration.

||<:style="width: 60%" :40%>'''Equipment'''||<:30%>'''Location'''||<:25%>'''ID Number'''||		 Two speakers driven from a common source are mounted at the ends of a 1 m rotatable bar.
||<40% style="&quot; ;text-align:center">'''Equipment''' ||<30% style="text-align:center">'''Location''' ||<25% style="text-align:center">'''ID Number''' ||
Line 22: Line 25:
||apparatus||[:WSCabinetRtBayA1: WS, Bay A1, Shelf #2]|| ||
||all other parts||[:WSCabinetRtBayB1: WS, ME, Bay B1, Shelf #2]|| ||
||...||[:WSCabinetRtBayA5: WS, Bay A5, Shelf #2]|| ||		 ||Speakers Mounted on 1 m Bar on a Stand ||[[WSCabinetRtBayA1|WS, Bay A1, Shelf T]] || ||
||Function Generator ||[[EMCabinetLtBayB1|EM, Bay B1 Left, Shelf #2]] || ||
||Coaxial Cables ||Located in rod and tackle cabinet near main lecture halls || ||
Line 27: Line 30:
'''''Important Setup Notes:'''''
 * N/A
Line 31: Line 32:
'''Setup and Procedure:'''  '''''Important Setup Notes:'''''
Line 33: Line 34:
 1. List steps for setup then procedure.
 1. ...		  * N/A

'''Setup and Procedure:'''

 1. Place stand on tabletop.
 1. Using a right-angle bracket, connect the 1 m bar with mounted speakers at the center to the stand.
 1. Plug in the function generator nearby.
 1. Connect the speakers to the function generator using BNC cables. Only one speaker needs to be connected (the two are connected internally).
 1. Choose a function (sine works well) and frequency.
 1. You can move locations of constructive and destructive interference by rotating the 1 m (need to loosen right-angle clamp first).
Line 37: Line 46:
Line 39: Line 49:
'''Discussion:'''
Line 40: Line 51:
'''Discussion:''' Sound waves obey the principle of superposition. When two sound (pressure) waves encounter one another, they interfere. Spatially, the resultant wave has alternating spots of constructive and destructive interference.
|| {{attachment:TwoSpeakerInterference02-250.jpg}} || {{attachment:TwoSpeakerInterference03-250.jpg}} || {{attachment:TwoSpeakerInterference04-250.jpg}} ||
Line 42: Line 54:
Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate.
Line 44: Line 55:
||attachment: photo||attachment: photo||attachment: photo||attachment: photo||
Line 47: Line 58:
 * [https://www.youtube.com/user/LectureDemostrations/videos?view=1 Lecture Demonstration's Youtube Channel]
* [[https://www.youtube.com/user/LectureDemostrations/videos?view=1|Lecture Demonstration's Youtube Channel]]
Line 51: Line 63:
 * [https://en.wikipedia.org/wiki/Interference_%28wave_propagation%29 Wikipedia - Interference]  * [[https://en.wikipedia.org/wiki/Interference_(wave_propagation)|Wikipedia - Interference]]
Line 53: Line 65:

[:Instructional:Home]		 [[Instructional|Home]]

Table of Waves and Sound Demonstration

Wave and Sound Equipment List

Lecture Demonstrations

Two Speaker Interference, 3B55.10

Topic and Concept:

pira200 Listed

Location:

TwoSpeakerInterference01-400.jpg

Abstract:

Two speakers driven from a common source are mounted at the ends of a 1 m rotatable bar.

Equipment

Location

ID Number

Speakers Mounted on 1 m Bar on a Stand

WS, Bay A1, Shelf T

Function Generator

EM, Bay B1 Left, Shelf #2

Coaxial Cables

Located in rod and tackle cabinet near main lecture halls

Important Setup Notes:

  • N/A

Setup and Procedure:

  1. Place stand on tabletop.
  2. Using a right-angle bracket, connect the 1 m bar with mounted speakers at the center to the stand.
  3. Plug in the function generator nearby.
  4. Connect the speakers to the function generator using BNC cables. Only one speaker needs to be connected (the two are connected internally).
  5. Choose a function (sine works well) and frequency.
  6. You can move locations of constructive and destructive interference by rotating the 1 m (need to loosen right-angle clamp first).

Cautions, Warnings, or Safety Concerns:

  • N/A

Discussion:

Sound waves obey the principle of superposition. When two sound (pressure) waves encounter one another, they interfere. Spatially, the resultant wave has alternating spots of constructive and destructive interference.

TwoSpeakerInterference02-250.jpg

TwoSpeakerInterference03-250.jpg

TwoSpeakerInterference04-250.jpg

Videos:

References:

Home

fw: Two_Speaker_Interference (last edited 2018-07-18 18:49:31 by srnarf)