 magnetic storms" are of not very unfrequent occurrence. In a magnetic storm the needle will often fly twenty minutes, thirty minutes, a degree, or even as much as two or three degrees sometimes, from its proper position — if I may use that term —...  Van Nostrand's Engineering Magazine - Page 2601874Full view - About this book
 | 1874 - 592 pages
...solution of this grand problem. The terrestrial magnetism is subject, as a whole, to the grand circular variation which I have indicated. But, besides that,...according to the statistics of previous observations. I speak of the needle in general. The ordinary observation of the horizontal needle shows these phenomena.... | |
 | 1874 - 580 pages
...subject, as a whole, to the grand circular variation which I have indicated. But, besides that, there arc annual variations and diurnal variations. Every day...according to the statistics of previous observations. I speak of the needle in general. The ordinary observation of the horizontal needle shows these phenomena.... | |
 | Sir Norman Lockyer - 1874 - 546 pages
...whole, to the grand secular variation which I have indicated. But, besides that, there are NA TURE annual variations and diurnal variations. Every day...according to the statistics of previous observations. I speak of the needle in general. The ordinary observation of the horizontal needle shows these phenomena.... | |
 | 1874 - 788 pages
...subject, as a whole, to the grand secular variation which I have indicated. But, besides that, there aie annual variations and diurnal variations. Every day...— if I may use that term — its proper position (or the time ; that, i?, the position which it might be expected to have at the time according to the... | |
 | Sir Norman Lockyer - 1874 - 542 pages
...there aic annual variations and diurnal variations. Every day the needle varies from a few minuses on one side to a few minutes on the other side of...may use that term — its proper position for the tune ; that is, the position which it might be expected to have at the time according to the statistics... | |
 | Sir Norman Lockyer - 1874 - 756 pages
...diurnal variations. Every day the needle varies from a few minutes on one side to л few minutes on ihe other side of its mean position, and at times there...minutes, thirty minutes, a degree, or even as much .is two or three degrees sometimes, from its proper position — if I may use that term — its proper... | |
 | Henry Minchin Noad, Sir William Henry Preece - 1879 - 662 pages
...the other side of its mean position, and at times there are much greater variations. What are caller! "magnetic storms" are of not very unfrequent occurrence....to have at the time according to the statistics of previoui observations. 1 speak of the needle in general. The ordinary observation of the horizontal... | |
 | William Thomson Baron Kelvin - 1894 - 628 pages
...not ask you to judge of the probability: I would not ask myself to judge of the probability of it. But now, I say, we look with hopefulness to the practical...according to the statistics of previous observations. I speak of the needle in general. The ordinary observation of the horizontal needle shows these phenomena.... | |
 | William Thomson Baron Kelvin - 1894 - 642 pages
...not ask you to judge of the probability: I would not ask myself to judge of the probability of it. But now, I say, we look with hopefulness to the practical...as two or three degrees sometimes, from its proper position—if I may use that term—its proper position for the time ; that is, the position which... | |
 | Edwin James Houston - 1905 - 678 pages
...under the upper surface, or whether it is a magnet like a mass of steel or lodestone, we do not know. "What are called 'magnetic storms' are of not very...is, the position which it might be expected to have «oras.tic at the time according to the statistics of previous observations. I speak of the needle... | |
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