Nature, 18. köideSir Norman Lockyer Macmillan Journals Limited, 1878 |
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Page 9
... distance can be obtained from measuring heliometrically the diurnal parallax of Mars at those oppositions when he approaches nearest to the earth , as from the observation by the combined exertion of civilised nations , of a transit of ...
... distance can be obtained from measuring heliometrically the diurnal parallax of Mars at those oppositions when he approaches nearest to the earth , as from the observation by the combined exertion of civilised nations , of a transit of ...
Page 12
... distance given above , but to pass not only up and down the particular wire selected , thus suffered breaking up at ... distances varying from twenty to sixty yards , whilst the sound of a small tuning - fork was heard at 100 yards . 2 ...
... distance given above , but to pass not only up and down the particular wire selected , thus suffered breaking up at ... distances varying from twenty to sixty yards , whilst the sound of a small tuning - fork was heard at 100 yards . 2 ...
Page 13
... distance , if the distance be infinitely small in comparison with D B or C A , and if each of these be infinitely small in comparison with C D. If the true south pole s of a powerful bar - magnet be held in a line midway between BA and ...
... distance , if the distance be infinitely small in comparison with D B or C A , and if each of these be infinitely small in comparison with C D. If the true south pole s of a powerful bar - magnet be held in a line midway between BA and ...
Page 14
... distances from the common centre of gravity ; and the condition FIG . 2 . unstable FIG . 3 . stable The rule for placing the vortices on their epicycles is as follows : -Each vortex keeps a constant distance from its mean position ...
... distances from the common centre of gravity ; and the condition FIG . 2 . unstable FIG . 3 . stable The rule for placing the vortices on their epicycles is as follows : -Each vortex keeps a constant distance from its mean position ...
Page 39
... distance of its point of application from a point or fulcrum by the resolved part of the force perpendicular to this distance tends to increase uniformly the moment of momentum ( defined similarly with that of force ) of the particle ...
... distance of its point of application from a point or fulcrum by the resolved part of the force perpendicular to this distance tends to increase uniformly the moment of momentum ( defined similarly with that of force ) of the particle ...
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Academy acid action American apparatus appears atmosphere blue body Capt carbon centimetres centre chemical coast College colour comet containing described direction distance earth effect Elasmobranch electric Eocene exhibited expedition experiments fact feet flora galvanometer geological give given glass Greenland heat inches increased instrument interesting Irish elk island larvæ light Lignitic magnetic matter means ment metal meteorological meteorology microphone miles Miocene molecules motion Museum nature observations Observatory obtained Owens College paper Paris perihelion phenomena phonograph photographs physical plants plate position present pressure produced Prof recently region remarkable right ascension Royal scientific seen seiches Silurian Society solar sound South species specific gravity spectrum Spitzbergen stars storm substances surface telephone temperature theory tion transit of Mercury tube University vapour variation velocity vibrations vis viva vowel wire
Popular passages
Page 161 - Yet soon he heal'd ; for spirits that live throughout Vital In every part, not as frail man In entrails, heart or head, liver or reins, Cannot but by annihilating die ; Nor in their liquid texture mortal wound Receive, no more than can the fluid air...
Page 140 - Men, my brothers, men the workers, ever reaping something new : That which they have done but earnest of the things that they shall do...
Page 163 - For an ye heard a music, like enow They are building still, seeing the city is built To music, therefore never built at all, And therefore built for ever.
Page 203 - His scales are his pride, shut up together as with a close seal. One is so near to another, that no air can come between them. They are joined one to another, they stick together, that they cannot be sundered.
Page 10 - Slate and Slate Quarrying. A TREATISE ON SLATE AND SLATE QUARRYING, Scientific, Practical, and Commercial. By DC DAVIES, FGS, Mining Engineer, &c. With numerous Illustrations and Folding Plates. Second Edition, carefully revised. I2mo, y. 6d. cloth boards. "Mr. Davies has written a useful and practical hand-book on an important industry, with all the conditions and details of which he appears familiar.
Page 116 - I of the American Journal of Mathematics he has a note " On a Class of Transformations which Surfaces may Undergo in Space of more than Three Dimensions," in which he shows, for instance, that if a fourth dimension were added to space, a closed material surface (or shell) could be turned inside out by simple flexure without either stretching or tearing.
Page 330 - Not unfrequently in the mountain districts broad beams apparently of bluish light may be seen extending from the zenith downwards, converging and narrowing as they approach the horizon. This ray-like appearance is very similar to that seen before sunrise ; only the point from which the rays proceed is opposite the sun : the rays themselves are very broad and blue in colour ; and the spaces between them have the ordinary illumination of the rest of the sky. If we suppose in this instance that the...
Page 240 - I found that one ounce of lead was not sufficient on a surface of contact 1 centimetre square to maintain constant contact; and it was only by removing the musical box to a distance of several feet that I was enabled to preserve continuity of current with a moderate pressure. I have spoken to forty microphones at once, and they all seemed to respond with equal force. Of course there must be a loss of energy in the conversion of molecular vibrations into electrical waves, but it is so small that I...
Page 240 - ... distance of several feet that I was enabled to preserve continuity of current with a moderate pressure. I have spoken to forty microphones at once ; and they all seemed to respond with equal force. Of course there must be a loss of energy in the conversion of molecular vibrations into electrical waves ; but it is so small that I have never been able to measure it with the simple appliances at my disposal. I have examined every portion of my room — wood, stone, metal, in fact all parts — and...
Page 162 - English, with an introduced Arabic guttural, some mispronounced Spanish, and a variety of shades of vowels and diphthongs. The result was perfectly satisfactory ; that is, Mr. Bell wrote down my queer and purposely exaggerated pronunciations and mispronunciations, and delicate distinctions, in such a manner that his...