Nature, Volume 19Sir Norman Lockyer Macmillan Journals Limited, 1879 - Electronic journals |
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Results 1-5 of 81
Page 6
... object of deducing from the barometric means evidence that the emission of solar heat is greatest in years of most sun - spots . He says : " It is well known that in Central Asia the annual variation of the barometric pressure is ...
... object of deducing from the barometric means evidence that the emission of solar heat is greatest in years of most sun - spots . He says : " It is well known that in Central Asia the annual variation of the barometric pressure is ...
Page 16
... object of Mr. Werdermann is to demonstrate that a number of lights can be placed in one circuit , the current being produced by an electroplating Gramme machine , having an electromotive force of 4 to 4 Daniell cells . The principle of ...
... object of Mr. Werdermann is to demonstrate that a number of lights can be placed in one circuit , the current being produced by an electroplating Gramme machine , having an electromotive force of 4 to 4 Daniell cells . The principle of ...
Page 19
... objects become invisible at the distance of three or four miles up to seventy , & c . , miles . " Mr. Cruikshanks also ... object fifty miles distant could be seen . It has lately appeared to me that the strongest beam should be dipped ...
... objects become invisible at the distance of three or four miles up to seventy , & c . , miles . " Mr. Cruikshanks also ... object fifty miles distant could be seen . It has lately appeared to me that the strongest beam should be dipped ...
Page 27
... object - glass is by no means essential for the production of fine photo- graphs ; for if the plate be withdrawn at a certain period when the rays that have a maximum energy have just completed their action , those that are more ...
... object - glass is by no means essential for the production of fine photo- graphs ; for if the plate be withdrawn at a certain period when the rays that have a maximum energy have just completed their action , those that are more ...
Page 38
... object of the inventor was to demonstrate that a number of lights can be steadily maintained in one circuit . The first experi- ment tried was that of putting two large lamps such as will be used for street - lighting in circuit with a ...
... object of the inventor was to demonstrate that a number of lights can be steadily maintained in one circuit . The first experi- ment tried was that of putting two large lamps such as will be used for street - lighting in circuit with a ...
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acid animals apparatus appears body carbon carbonic acid cause centimetres centre chromosphere circuit colour comet contains corresponding described direction distance effect electric light energy eocene exhibited existence experiments fact feet flesh-formers galvanometer gases Geographical geological give given heat hydrochloric acid hydrogen hydrogen lines important inches increase India instrument interesting larvæ lectures length letter lines lower magnetic means measured ment metal meteoroids method miles miocene molecules momentum motion mountains Museum NATURE observations Observatory obtained paper Paris Paris Geographical Society pass perihelion period phosphorescence physical plants plates position present pressure probably produced Prof Raoul Pictet referred regard region remarks researches river Royal Royal Society scientific seen Society solar species specimens spectrum Spitzbergen stars sun-spot surface telephone temperature theory tiger tion tube Unseen Universe velocity vibrations wire