Subject ASC0000cun
The Intellectual observer.
v.7 (1865), Page 378 (1865)
Harvard University, MCZ, Ernst Mayr Library
BHL Page 39464518
Keywords
Greenwich Magnetometer 1865 March both magnetometer magnetism electricity march aurora auroral arch magnetic pole discharge REGISTER OF GREENWICH MAGNETOMETERS geographical Auroral arch Height direction of magnetic meridian galvanic greenwich magnetometers Greenwich magnetometers magnetic meridian stratified discharge galvanic electricity declination whole horizontal force whole vertical force meteorology astronomy Height of the aural arch March 20 1865 vertical force time Greenwich Magnetomter readings March 20th