Smithsonian Contributions to KnowledgeSmithsonian Institution, 1863 - 151 páginas |
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... animals , etc. etc . ; . on the aurora borealis and atmospheric phenomena Tabulation of auroras , with observations and notes , by Dr. David Walker 107 • 111 145 ILLUSTRATIONS . PLATES . Chart showing the tracks of the iv CONTENTS .
... animals , etc. etc . ; . on the aurora borealis and atmospheric phenomena Tabulation of auroras , with observations and notes , by Dr. David Walker 107 • 111 145 ILLUSTRATIONS . PLATES . Chart showing the tracks of the iv CONTENTS .
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... aurora were most frequently seen in the direction of open water , or else in that of places where vapor was rising . In some cases , patches of light could be plainly seen a few feet above a small mass of vapor over an opening in the ...
... aurora were most frequently seen in the direction of open water , or else in that of places where vapor was rising . In some cases , patches of light could be plainly seen a few feet above a small mass of vapor over an opening in the ...
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... aurora is most fre- quent and most brilliant . " These facts would appear to favor the hypothesis that auroral displays are due to electrical discharges between the air and the earth , since such discharges would , at least in part , be ...
... aurora is most fre- quent and most brilliant . " These facts would appear to favor the hypothesis that auroral displays are due to electrical discharges between the air and the earth , since such discharges would , at least in part , be ...
Página 111
... AURORA BOREALIS AND ATMOSPHERIC PHENOMENA . THE state of the weather is indicated by the following letters ( Beaufort's notation ) : - b Blue sky . с Clouds ( detached ) . d Drizzling rain . f Foggy . g Gloomy . h Hail . 7 Lightning . m ...
... AURORA BOREALIS AND ATMOSPHERIC PHENOMENA . THE state of the weather is indicated by the following letters ( Beaufort's notation ) : - b Blue sky . с Clouds ( detached ) . d Drizzling rain . f Foggy . g Gloomy . h Hail . 7 Lightning . m ...
Página 115
... aurora in the S. E. 25th . Faint aurora from N. N. W. to S. S. W ; two seals and a glaucous gull seen . 26th . A raven shot . 27th . A raven seen ; at 2 A. M. a slight aurora in the E. S. E. 28th . No bottom with 140 fathoms . 29th ...
... aurora in the S. E. 25th . Faint aurora from N. N. W. to S. S. W ; two seals and a glaucous gull seen . 26th . A raven shot . 27th . A raven seen ; at 2 A. M. a slight aurora in the E. S. E. 28th . No bottom with 140 fathoms . 29th ...
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Términos y frases comunes
annual variation April May June aurora b c m Baffin Bay Bellot Straits bi-hourly bifilar bm z 66 BOARD THE YACHT Calm 1 N. E. Calm Calm Calm copper curves Dawn at 7h deflection diagram difference Dip reduced Dip when loaded disturbances diurnal variation Div's dovekies dusk at 4h epoch Fahr fathoms February March April feet Girard College horizontal force Hour angle hourly January February March July August Latitude lunar lunar effect Lunitidal interval magnetic declination maxima and minima maximum Mean Lat Midn't midnight minimum month monthly mean moon Moon's N. W. by N Needle Noon Philadelphia Port Kennedy readings Referred mean Relative total intensity Rensselaer Harbor scale divisions seen summer Temp temperature Toronto values W. N. W. Calm weight wind winter YACHT FOX ос