StNicholas [numero] . s pur apparendo ai nostri eyesas uno solo, e che i tre sono revolvingaround uno un altro e che il gruppo è ap- 36° di scienza e natura per giovani ragazzi. [Feb. predicazione la terra al tasso di circa sevenmiles un secondo. Mizar, che è la stella nella maniglia di theDipper presso il punto in cui appare a bebroken, è stato scoperto presso la Harvard Obser-vatory nel 1889 per essere più: e, come in thecase di Polaris, lo spettroscopio rivelato thesecret. È stato trovato in quel momento, e noticedmany volte poiché, che le linee di spectro-ambito cambiato una volta in cinquantadue d

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StNicholas [serial] . s though appearing to our eyesas only one, and that the three are revolvingaround one another, and that the group is ap- 36° NATURE AND SCIENCE FOR YOUNG FOLKS. [Feb. preaching the earth at the rate of about sevenmiles a second. Mizar, which is the star in the handle of theDipper at the point where it appears to bebroken, was discovered at the Harvard Obser-vatory in 1889 to be multiple: and, as in thecase of Polaris, the spectroscope revealed thesecret. It was found at that time, and noticedmany times since, that the lines of the spectro-scope changed once in fifty-two days. As these lines also changed irregularly at other times, itis suspected that Mizar is made up of morethan two stars. So you see that some of our bright stars arenot really one, but several stars appearing asone. As they are billions of miles away, evenour best telescopes cannot see them as theyreally are, but the spectroscope shows thatwhat seems to us one star is sometimes reallya group of stars—a star family.. ence *Nr SEE AND TELL. Next to the pleasure of observing is that oftelling. Discoveries in nature and science arenot selfish—at least, with the young folks. Seewhat I have found! is the natural expressionof desire to share the pleasure with a playmateor teacher. I have two good eyes, and so has every oneof my grown-up friends assisting me, but notone of us has better eyes than many of you, and we will enjoy having you tell us and otherswhat you have seen. Here are letters relatingwhat some of our wide-awake young observershave to tell us : Westminster Depot, Mass. Dear St. Nicholas : I think it is very funny howthe muskrats can live in the mud for a while and thencome up to the surface and stay for many hours. What I have seen are of a brownish color. Theyhave a little black on the tip of their nose and on theirtoes. They are not much larger than a large rat. Theonly difference that I can see between a muskrat and alarge common rat is in the color, shape, and fu

Parole chiave associate all'immagine

• bookauthordodgemar
• bookcentury1800
• bookdecade1870
• bookyear1873