Light Science For Leisure Hours : A Series Of Familiar Essays On Scientific Subjects, Natural Phenomena, Etc
Richard A. Proctor
Paperback
(CreateSpace Independent Publishing Platform, Jan. 31, 2008)
Light science for leisure hours : a series of familiar essays on scientific subjects, natural phenomena - 1886 - PREFACE 1 0 SECOL D EDITIOS. THIS edition has been carefully revised, and, ill pi rt.-, considerably modified. T1111s the Essay on 13ritai li Coal Cellars has been adcletl, ant1 t TO Issnys on ovt l. 11-rnent Aicl to Science have been rt r oved I . I C L 1 1 t l i - tion that my view. on the sul ject of tlle last-li rnc l ssays have changed altogether since those E Fs J v s t lre 11-ritt en - certain circumstances which liave coillcA untlc r lily observation having convinced me that more niischit f than advantage i ouldre elrlt fro ria ny wiclt s chc inr f or . yecuring Government lid for scientiEc researches. FIRST IN preparing these Essays, my chief object has been to present scientific truths in a light and readable form-clearly and simply, but with an exact adherence t. o the facts as I see them. I have followed-here and always-the rule of trying to explain my meaning precisely as I should wish others to explain, to myself, matters with which I was unfamiliar. Hence I have avoided that excessive simplicity whicl-r some seem to consider absolutely essential in scientific essays intended for general perusal, but which is often even more perplexing t, han a too technical style. The chief rule I have followed, in order to make my descriptions clear, has been to endeavour to make each sentence bear one meaning, and one only. Speaking as a reader, and especially as a reader of scientific books, I venture to express an earnest wish that tbis simple rule were never infringed, even to meet the requirements of style. It will hardly be necessary to mention that several of the shorter Essays are rat, her intended to amuse than to instruct. ll e Essay c , i the influence n-1iic. l rn w i igt. l I w c b n su1 l osecl to ese1-t on the death-rate is the olrcJ r. efcw. ed to hy 311.. T nrn-in it l agcl 176 -01. i. of hi nfhsce lt o f Rlarl. . ON TENT S. . IIII. I-YI. FL-I. S 01. E . S J S - TI JL-AK s . 211 T rr. I - I cIsc Iu- I 01. KAIS . - . - , . 3 I - Sri OJV r, n OF Sson--C1 1-s. 4r, s . . - b j ic I. os SIIOTS . . 23 NFLUESCE OF IARRL O A N G T E IIE I ESTII-HATE THE TOPOGRAPHICA S L C RVEY O F ISDIA . . . r i SHIP ATTACKED CY A S V O R D - I S . I THE SAFETY-LAMP . . . iiE DUST WE HAVE TO B I E - L T I IHOTOGRAIHIC GHOSTS . l i I O XFORD A SD CAMBRIDGE I O VIS S C T Y LES . I ETTISG OS HORSE RACES OR, TIIC sT TI 01 T I I E on, . Sqrrar, rsG TIIE CIECLE . - 1 SEW TIIEORY 01. ACIIILLCG SIIIELD LIGHT SCIENCE FOR LEISURE HOURS. STRANGE DI CO VERIES RESPECTING THE AUXORA. THE brilliant streamers of coloured light which wave at certain seasons over the heavens have long since been recognised as among the most singular and im pressive of all the phenomena which the skies present to our view. There is something surpassingly beautiful in the appearance of the true auroral curtain. Fringed with coloured streamers, it waves to and fro as though shaken by some unseen hand. Then from end to end there pass a succession of undulations, the folds of the curtain interwrapping and forming a series of graceful curves...