V.2 No 2 | 7 |
Theorem of curl of a potential vector | |
To corroborate this theoretical concept, we have carried out the experiment on radiation/receipt of transversal acoustic wave in gas medium [12]. We intentionally used the standard technique of studying the polarised EM microwaves described, e.g., by Kalitievsky [13, pp.23-24]. The block-diagram of the setup is presented in Fig. 5. It consisted of the sound-frequency generator 1, the radiator 2 designed for this experiment, and the receiver of transversal acoustic wave 3 which was fully similar to the radiator (they were constructed after balance scheme, compensating the parasitic longitudinal component), the received signal amplifier 5 and registering oscillograph 6. Both radiator and receiver were placed into the screening trumpets 4. Furthermore, the radiator was able to turn in the vertical plane, producing the angle between the polarisation planes of radiator and receiver. The working frequency was 7,4 kHz. | |
The fact of radiation/receipt of transversal acoustic wave is corroborated by the
polar diagrams of amplitude Am and phase ![]() ![]() ![]() ![]() |
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In Fig. 7 we presented the experimental dependencies of
amplitude Am (Fig. 7 a), of the delay phases of wave process
As transiting to the far field, the amplitude attenuation with the distance decreases, the phase inversions cease and the wave propagation velocity stabilises at the value close to that classical - 326 m/s. The wave propagation pattern transformations, with remaining the polarisation plane, evidence that in the far field the transversal acoustic wave in gas has formed. This completely corroborates the theoretical concept stated above. |