The Bakerian Lecture: A Magnetic Survey of the British Isles for the Epoch January 1, 1886 . FiyVM. A centre of attraction will also be indicated by a convergence of the lines of equalHorizontal Force and Dip in its neighbourhood. The observed will be greater than the calculated Force to the south, and smaller tonorth, of the centre. The Dip, on the other hand, will be less and greater than itscalculated values at stations to the south and north respectively of a point at whichthe directions of the normal and disturbing Forces coincide. The phenomena are more complicated if the effect of the d
The Bakerian Lecture: A Magnetic Survey of the British Isles for the Epoch January 1, 1886 . FiyVM. A centre of attraction will also be indicated by a convergence of the lines of equalHorizontal Force and Dip in its neighbourhood. The observed will be greater than the calculated Force to the south, and smaller tonorth, of the centre. The Dip, on the other hand, will be less and greater than itscalculated values at stations to the south and north respectively of a point at whichthe directions of the normal and disturbing Forces coincide. The phenomena are more complicated if the effect of the disturbance is to increasethe value of the element on side of the centre of attraction on which it would benormally the greater, instead of increasing it (as in the case of the Declinations) onthat side (the east) on which it is normally the less. Thus, if we represent a northward movement by progress along the line WE(fig. 10) from W to E, the effect of a strong centre of attraction would be to check 264 MR. A. W. EtTOKER AND DR. T. E. THORPE ON A MAGNETIC the ordinary decrease of the Hor
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectproceed, bookyear1890
