1. Sound Demonstration Presentation
Created
for
Operation Physics Tuscarawas By
Dick Heckathorn
12 July 2K+4

2. 1.Sign - CAN YOU HEAR ME?
Speak in normal voice
Move lips only as you raise the sign

3. 2. Bells
Example of a vibrating object

4. 3. Red Plastic Strip
Another example of vibrating object
Can find strip at party stores

5. 4. Domino Analogy Handout in back of book
Demonstrates that something can go from one place to another without anything physical going from one place to another.
118

6. 5. Acoustic Cannon Cardboard Box
Handout in back of book
Something unseen is going from one place to another
Not an example of how sound travels.
122

7. 6. Acoustic Cannon Coffee Can
Like previous demonstration
Something unseen is going from one place to another
Not an example of how sound travels.

8. 7. Sound on Laser
Example of sound which travels at ≈ 345 m/s added to and carried by the laser beam traveling at 300,000,000 m/s

9. 10. Hearing Range
Need signal generator, speaker and amplifier.
Need good quality speaker
Using frequency meter program by Vernier on Apple ][ computer

10. Sound measured in decibels Carried by Radio Shack
11. Sound Meter
Handout in back of book
Sound measured in decibels
Carried by Radio Shack
124

11. 12. Monochord
Wire is covered by vinyl
Can be found in fishing stores
Called leader wire

12. 13. Wine Glass
Need to have finger clean

13. 14. Glass with Hole in Bottom
Might be luck to find glass with hole in bottom
There are glass drills
Used clear silicon to fasten container (to hold water) to base.

14. 15. 4-Pop Bottles (Glass)
Add volumes in ratio of:
1 – 2 – 3 – 4
In my opinion, the larger the better
May have to use length ratio

15. 19. Recorder
Operate on air column lengths

16. 20. Cracker Jack Whistle
Operate on air column lengths

17. Cracker Jack Double Whistle
f1 = 2820 Hz
f2 = 3259 Hz
f2 – f1 = Hz

18. Cracker Jack Whistle-Tape Recorder
f1 = Hz
f2 = 2258 Hz
f2 – f1 = 1855 Hz

19. 20a. English Police Whistle
1 Pipe – one frequency 1
2 Pipes – 3 frequencies
1 1

20. 21. Wood Whistle - 3 pipes
3 Pipes – 6 frequencies 1

21. 22. Wood Whistle - 4 pipes
4 Pipes – 10 frequencies 1
1 1

22. 23. Train Whistle - 5 pipes
5 Pipes – 15 frequencies 1
1 1

23. 24. 8-Pipe Pink Plastic
Look for old or new children toys

24. 25. Playschool Instrument
I wonder how it works?

25. In two different octaves
26. 4-P.V.C. Pipes
Handout in back of book
Can play by:
Listening
Hitting
Blowing
In two different octaves
121

26. 27. Singing Corrugated Tube (Black)
Tube used to connect swimming pool to filter

27. 29. Xylophone-Colored

28. 30. Conduit Pipes
Handout in back of book
119

29. 31. Doppler Effect - Tape

30. 32. Doppler Buzzer

31. 35. Aluminum Rod
Handout in back of book
127

32. 36. Singing Cardboard Tube

33. 37. Singing Metal Tube
Use care – can become hot

34. 38. Speaker + Cup

35. 38. Speaker + Wood w/ hole

36. 39. Speaker – Open
Radio Shack

37. 40. Speaker - Small Wood Box
Same type of speaker

38. 41. Speaker - Large Wood Box
Same type of speaker

39. 42. Tube with Gas Flames
Handout in back of book
125