Astronomical Register: A Medium of Communication for Amateur Observers and All Others Interested in the Science of Astronomy, Volumen8

J. D. Potter., 1871

Dentro del libro

Comentarios de la gente - Escribir un comentario

No encontramos ningún comentario en los lugares habituales.

Otras ediciones - Ver todas

Términos y frases comunes

Pasajes populares

Página 49 - President, in the Chair. The minutes of the last Annual Meeting were read and confirmed. The President appointed as Scrutineers of the Ballot, Mr.
Página 204 - We could tell, for example, the number of degrees which this amount of heat would impart to a globe of water equal to the earth, in size. Mayer and Helmholtz have made this calculation, and found that the quantity of heat which would be generated...
Página 203 - ... 7. — The darkness is coming on with insidious steadiness, and its advances can only be perceived by comparing one day with its fellow of some time back. We still read the thermometer at noonday without a light, and the black masses of the hills are plain for about five hours, with their glaring patches of snow ; but all the rest is darkness. The stars of the sixth magnitude shine out at noonday. Except upon...
Página 240 - Linné in the heliometer of the observatory at Bonn, and found it shaped exactly, and with the same throw of shadow, as he remembered to have seen it in 1831. '•' The event," he says, " of whatever nature it might have been, must have passed away without leaving any trace observable by me.
Página 205 - The amount of heat thus developed would be equal to that derived from the combustion of fourteen globes of coal, each equal to the earth in magnitude. And if, after the stoppage of its...
Página 203 - Spitzbergen, which has the advantages of an insular climate, and tempered by ocean currents, no Christians have wintered in so high a latitude as this.* They are Russian sailors who made the encounter there — men inured to hardships and cold. Our darkness has ninety days to run before we shall get back again even to the contested twilight of to-day. Altogether our winter will have been sunless for one hundred and forty days.

Información bibliográfica