Using sound for detection and measurement. (1) Distance-measuring system acts like a simple radar system. (2) Motion detector is based on the Doppler effect.
POPULAR ELECTRONICS [2] Sep 1990 (v.7#9) pg. 82
Experiments with plasma acoustics shows how to make a flame speaker.
POPULAR ELECTRONICS [2] Oct 1992 (v.9#10) pg. 37
Added Info POPULAR ELECTRONICS [2] Dec 1992 (v.9#12) pg. 3
Waves, waves, everywhere. Construction of a sound pipe for use in experiments with sound waves.
SCIENCE PROBE! Nov 1992 (v.2#4) pg. 95
Gas burners with sensitive flames used for studying sound waves.
SCIENTIFIC AMERICAN Jan 1965 (v.212#1) pg. 121
Apparatus that transforms sound into heat and measures the resulting temperature with a thermometer.
SCIENTIFIC AMERICAN Aug 1968 (v.219#2) pg. 118
Sound waves and radio waves are recorded on Polaroid film by means of a precooling process. Sound waves, microwaves and mechanical vibrations may be visually recorded by this process.
SCIENTIFIC AMERICAN Nov 1972 (v.227#5) pg. 120
A look at whispering galleries. What makes them carry whispered sound and how to set up experiments to demonstrate the effects.
SCIENTIFIC AMERICAN Oct 1978 (v.239#4) pg. 179
What makes you sound so good when you sing in the shower? A study of the acoustical resonance of shower stalls.
SCIENTIFIC AMERICAN May 1982 (v.246#5) pg. 170
The amateur scientist. Experiments designed to examine the acoustics of bells.
SCIENTIFIC AMERICAN Jul 1984 (v.251#1) pg. 132