Suppose you sound a 1056-Hz tuning fork when you strike a note on the piano and hear 2 beats/second. You tighten the piano string very slightly and now hear 3 beats/second. What is the frequency of the piano string?
A) 1053 Hz
B) 1054 Hz
C) 1056 Hz
D) 1058 Hz
E) 1059 Hz
Question 2
Sound interference with a pair of radio loudspeakers can be nicely demonstrated when the
A) radio signal is monaural for each.
B) input and output of the speakers are reversed.
C) speakers are brought face to face.
D) all of the above
E) none of the above
Tuning fork tests
Tuning Curves
Testing hearing acuity using a tuning fork.
Gram-stained cervical smear. Note the gram-negative diplococci Neisseria gonorrhoeae ...
Example of simplified note for a nonmedical setting.