Abstract
A RECENT communication by Prof. B. S. R. Rao and I. V. Radhakrishnamurty1 creates a misleading impression (more particularly for the case of a sphere) that the depth of a body can be easily interpreted from the gravity (or magnetic) data by finding out the critical radius of the circle beyond which average radial gravity (or magnetic) value diverges. In actual practice this interpretation is not possible because for a body of finite dimensions (at any depth) the average radial value can never be infinite (this is obvious from physical reasons) however large a circle we may choose.
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References
Rao, B. S. R., and Radhakrishnamurty, I. V., Nature, 206, 179 (1965).
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NEGI, J. Convergence and Divergence in Gravity and Magnetic Interpretation. Nature 210, 616–617 (1966). https://doi.org/10.1038/210616b0
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DOI: https://doi.org/10.1038/210616b0
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