Nature: International Journal of Science, Količina 106

Sprednja platnica
Sir Norman Lockyer
Macmillan Journals Limited, 1921
 

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Stran xlviii - Save base authority from others' books. These earthly godfathers of heaven's lights That give a name to every fixed star Have no more profit of their shining nights Than those that walk and wot not what they are.
Stran 113 - Others apart sat on a hill retired, In thoughts more elevate, and reasoned high Of Providence, Foreknowledge, Will, and Fate— Fixed fate, free will, foreknowledge absolute — And found no end, in wandering mazes lost.
Stran 179 - Edinburgh, a Member of the Institution of Civil Engineers, and of the Institution of Mechanical Engineers, and in 1883 he received the honorary degree of LL.D. from the University of Glasgow. He died on the 12th of June, 1885, after a few days' illness, due to a slight surgical operation.
Stran liv - The classic authorities tell us that he was only " doing a stunt," but I prefer to think of him as the man who certainly brought to light a constructional defect in the flying machines of his day. So too in science. Cautious Daedalus will apply his theories where he feels...
Stran lii - A star is drawing on some vast reservoir of energy by means unknown to us. This reservoir can scarcely be other than the sub-atomic energy which, it is known, exists abundantly in all matter; we sometimes dream that man will one day learn how to release it and use it for his service.
Stran liii - I will not dwell on his beautiful proof of this, as you will no doubt be able to hear it from himself. Now mass cannot be annihilated, and the deficit can only represent the mass of the electrical energy set free in the transmutation. We can therefore at once calculate the quantity of energy liberated when helium is made out of hydrogen. If 5 per cent of a star's mass consists initially of hydrogen atoms, which are gradually being combined to form more complex elements, the total heat liberated will...
Stran 60 - Poland agrees to take such steps as may be necessary to secure that any such products shall be available for sale to purchasers in Germany on terms as favourable as are applicable to like products sold under similar conditions to purchasers in Poland or in any other country.
Stran 71 - Crown 8vo, 6s. net. The book is primarily written to meet the needs of students preparing for the examinations of the Conjoint Board of the Royal Colleges of Physicians and Surgeons of England. But it covers to a great extent the syllabuses of other...
Stran 241 - At the time of his death he was one of the oldest members of the Boston Chamber of Commerce.
Stran lii - Now, on the contraction hypothesis the change of density must amount to at least 1 per cent, in 40 years. (I give the figures for 8 Cephei, the bestknown variable of this class.) The corresponding change of period should be very easily detectable. For 8 Cephei the period ought to decrease 40 seconds annually. Now 8 Cephei has been under careful observation since 1785, and it is known that the change of period, if any, must be very small. S. Chandler found a decrease of period of %0 second per annum,...

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