商用無料の写真検索さん
           


Image from page 49 of "The works of Thomas Dick" (1844) : 無料・フリー素材/写真

Image from page 49 of "The works of Thomas Dick" (1844) / Internet Archive Book Images
このタグをブログ記事に貼り付けてください。
トリミング(切り除き):
使用画像:     注:元画像によっては、全ての大きさが同じ場合があります。
サイズ:横      位置:上から 左から 写真をドラッグしても調整できます。
あなたのブログで、ぜひこのサービスを紹介してください!(^^
Image from page 49 of "The works of Thomas Dick" (1844)

QRコード

ライセンスNo known copyright restrictions(著作権制限なし)
説明Identifier: cu31924031043080Title: The works of Thomas DickYear: 1844 (1840s)Authors: Dick, Thomas, 1774-1857 Sumner & Goodman. pbl Burfoot, J. D., Jr. insSubjects: Philosophy Religion Science Religion and science 1844Publisher: Hartford : Sumner & GoodmanContributing Library: Cornell University LibraryDigitizing Sponsor: MSNView Book Page: Book ViewerAbout This Book: Catalog EntryView All Images: All Images From BookClick here to view book online to see this illustration in context in a browseable online version of this book.Text Appearing Before Image:aged in the observation; on account of theuncertainty of enjoyinga serene sky at one par-ticular place, during the moments when the ob-servation behooved to be made. Whereas, bya multitude, of observations in different places,the object in view could not fail of being deter-mined. The disputes respecting the period ofrotation of this planet (whether it be 23 hours20minute^,;or .24 days & hours) mightalsobfesettled, were a number of persons to observe itsairface wi1)h equatorial telescopes in the day-time ; particularly in those southern climeawhere the air is serene, and the sky exhibits adeep azure, whefe, in all probability, spotswould be 4weovered, >vhich could be tra<ied intheir motions for suctGessive periods of twelvehoura or mere, which would determine to a cer-tainty the point in question. The following-figure and explanation will per-haps tend to show the reason of,the cUsputewhich has arisen in reference to this point. LetA represent a spot on the surface of Venus.Text Appearing After Image:As this planet is seen, by the naked eye, oiriyhi the morning a little before sun-rise, or in theevening a short time after sun-set—the motionof the spot cannot be traced above an hour ortwo in succession; and, consequently, duringthat time, its progressive motion is almost im-perceptible. Suppose the observation to havebeen made in the evening, after sun-eet, the next observation cannot be made till about thesame time, on the following evening, wh^n it iafound that the spot has moved from A to B,But it is still un<:ertam whether the spot has onlymoved frorh A to B^since the last^observation,or has finished a complete revolution, and movedthe distance A B as part of anpther revolutionround the axis of the planet. This point canonly be ascertained by tracing the motion of thespot without interruption for 10, l2ior 14 hours,when, if the rotation is performed iin 23^ hoursythe motion of the spot could be tEsaeed withoutinterruption across the whole disk of the planet.But such an obsNote About ImagesPlease note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
撮影日1844-01-01 00:00:00
撮影者Internet Archive Book Images
タグ
撮影地


© 名入れギフト.com

こちらもおすすめです→ カエレバ(同一商品の複数ショップリンク一発作成) | Amazon search | 楽々お任せリンク | Affiliate Helper