Nature, Količina 91Sir Norman Lockyer Macmillan Journals Limited, 1913 |
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Zadetki 1–3 od 82
Stran 253
... photographs by insert- ing in the optical train a medium which produced a sharp absorption line in the stellar spectrum . Mr. R. W. Wood found out that the absorption line of neodymchloride at 14273 A.U. in a weak solution was Prof ...
... photographs by insert- ing in the optical train a medium which produced a sharp absorption line in the stellar spectrum . Mr. R. W. Wood found out that the absorption line of neodymchloride at 14273 A.U. in a weak solution was Prof ...
Stran 255
... photograph is taken . By comparison of the two photographs it is seen what effect , if any , the substance has had upon the transmission of the light . When organic substances are examined in this way it is found that some allow light ...
... photograph is taken . By comparison of the two photographs it is seen what effect , if any , the substance has had upon the transmission of the light . When organic substances are examined in this way it is found that some allow light ...
Stran 584
... photographs of the aurora at the two stations , namely , Bossekop and Store Korsnes , the latter station being about 27 kilometres to the north of Bosse- kop . Of these photographs 450 pairs are stated to be very satisfac- tory and ...
... photographs of the aurora at the two stations , namely , Bossekop and Store Korsnes , the latter station being about 27 kilometres to the north of Bosse- kop . Of these photographs 450 pairs are stated to be very satisfac- tory and ...
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netism for Students in Engineering By Drs R | 130 |
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acid appears April Aristotle Astronomical atomic weight atoms auxetics axis British carbon cent chemical chemistry chromosphere College colour committee contains described direction discussion edition effect electric engineering experiments fact flywheel Geological given gives gyrostat heat Heiligenschein helium Hermann et Fils hydrogen illustrated important increase Indian instrument interest investigation J. J. Thomson kathode laboratory larvæ lectures light lines London magnetic March mathematics matter measured ment metal Meteorological method Museum National Physical Laboratory nature nitrogen observations Observatory obtained paper pearlite photographs physical plants plates position practical present president Price produced Prof Protozoa published radio-active radium rays recent recorded reference ROYAL INSTITUTION Royal Society schools scientific South species spectra spectrum stars steel surface temperature theory tion Trypanosome tube University vanadium various velocity volume wind zoological