1.
J Acoust Soc Am
; 91(4 Pt 1): 2229-35, 1992 Apr.
Article
in English
| MEDLINE
| ID: mdl-1597611
ABSTRACT
Theory and measurements of the use of two adjacent pressure sensors to measure acoustic power flow of a simple harmonic sound wave in a duct are presented. This theory differs from the usual intensity-times-area formulation of this problem by including the phase shift between pressure gradient and velocity, which is caused by viscous drag on the gas at the duct wall. For high standing-wave ratios, the power obtained by this method differs significantly from the product of mid-duct intensity and duct area. These measurements confirm the method to an accuracy of 5%, even at high amplitudes where the acoustic flow is turbulent and the theory might not necessarily be valid.
Subject(s)
Acoustics , Models, Theoretical , Scattering, Radiation , Sound , Humans
2.
JAMA
; 238(20): 2144, 1977 Nov 14.
Article
in English
| MEDLINE
| ID: mdl-578824
3.
J Pers
; 42(2): 202-19, 1974 Jun.
Article
in English
| MEDLINE
| ID: mdl-4843872
Subject(s)
Creativity , Educational Status , Family Characteristics , Female , Humans , Male , Marriage , New York City , Sex Factors , Social Class
4.
Child Dev
; 43(2): 669-76, 1972 Jun.
Article
in English
| MEDLINE
| ID: mdl-5034739
Subject(s)
Creativity , Motivation , Child , Child Behavior , Female , Humans , Intelligence , Male , Reward , Social Class , Task Performance and Analysis
5.
Child Dev
; 40(3): 869-78, 1969 Sep.
Article
in English
| MEDLINE
| ID: mdl-5810532
Subject(s)
Creativity , Reaction Time , Analysis of Variance , Child , Humans , Male , Motivation , Personality
6.
Child Dev
; 39(3): 737-54, 1968 Sep.
Article
in English
| MEDLINE
| ID: mdl-5687322
Subject(s)
Creativity , Psychological Tests , Analysis of Variance , Child , Female , Humans , Intelligence Tests , Male , Psychometrics
7.
Child Dev
; 39(3): 867-74, 1968 Sep.
Article
in English
| MEDLINE
| ID: mdl-5687331