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ABSTRACT RECORDS of wireless echoes by the group-retardation method of Breit and Tuve1 show that the intensities and number of echoes diminish as the receiver is brought near the
transmitter. The minimum distance from the transmitter at which we could detect echoes was 400 metres2. The nearest distance at which interference phenomena between direct and sky waves have
ever been noticed seems to be 180 yards3. The difficulty experienced in recording echoes at short distances from the transmitter is commonly supposed to be due to the enormous strength of
the direct ground signal as compared with the strength of the echoes. This is undoubtedly one reason; but there is another reason to which proper attention has not been paid by investigators
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Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS REMOTELY IMAGING SEISMIC GROUND SHAKING VIA LARGE-N INFRASOUND BEAMFORMING Article Open access 31 October 2023 A
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HYDROLOGICAL MEASUREMENTS Article Open access 23 October 2023 REFERENCES * Breit and Tuve, _Phys. Rev._, 27, 554; 1926. Article ADS Google Scholar * Mitra and Rakshit, _Phil. Mag._, 15,
20; 1933. Article Google Scholar * Appleton and Naismith, _Proc. Roy. Soc._, A, 137, 36; 1932. Article ADS Google Scholar Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS
* Wireless Laboratory, University College of Science, 92 Upper Circular Road, Calcutta S. K. MITRA & H. RAKSHIT Authors * S. K. MITRA View author publications You can also search for
this author inPubMed Google Scholar * H. RAKSHIT View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT
THIS ARTICLE CITE THIS ARTICLE MITRA, S., RAKSHIT, H. Recording Wireless Echoes at the Transmitting Station. _Nature_ 131, 657 (1933). https://doi.org/10.1038/131657a0 Download citation *
Issue Date: 06 May 1933 * DOI: https://doi.org/10.1038/131657a0 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a
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