ACOUSTIC RADIO INTERACTION IN SALT SOLUTIONS.
GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION
Pagination or Media Count:
The fractional change of the conductivity of aqueous sodium chloride solutions produced by an acoustic wave has been measured and found to be 0.7 x 10 to the -10th power per dynesq cm pressure change over a concentration range of 0.3 to 3.0 molal. The addition of various organic and inorganic solutes to the solutions produced up to a factor of 1.75 increase in this figure. The measurements are consistent with predictions based on theory and static data. The measurements were made by reflecting electromagnetic and acoustic waves from the salt water surface in a coaxial test cell at a radio frequency of 147 MHz and an acoustic frequency of 17.5 KHz. The equipment used is capable of measuring an amplitude modulation index lower than 150 dB below 100 per cent for 1 Hz bandwidth. Author
- Physical Chemistry
- Radiofrequency Wave Propagation