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Show I T : tn- . j t ...ABOUT... ! I SUN.R.IPJGS ! ! I v t--!-t- .: ..!f.M..H. l. 4.j.a.J In repaid to the halo around the run which created much excitement Ihroue.tinut the enwterii ecrtion of this country. Mr Justice Hlalin. secretary of tin r . I : ti . i ii . I ... I action of the Maryland A. n.T'l.y of S lenre. says: "Very often, when the hravenfc are overcast by alight, or light, fleecy clou. I. we ol.acrve colored rings about the moon and the aun. They are termed term-ed halim. or aureoles. I have never ohsirveii a hiilu about the sun In the Intltudi of llalllmore, hut haloa alioul the moon are quite frequent. One of the moat brilliant thnt 1 have observed ob-served in llaltlmoro occurred aome time In the beginning of 11)01. Very often of-ten the bales do not form a complete circle, but nre vlalule only In aectlona. Probably the reason we do nst notice th halo about the aun la on account of Ita Intense hrllllanry, and thnt we do not ..ok at It directly. The beat way to observe linloa la to observe tbt reflection of the sun In black mirror, hlark gluts or glass smoked on ono I . In meteorology the halo ire divided Into two rlasse the corona, which I of amnll diameter, and the halo, which la of a greater extent. In th corona the color of the Inner pnrt of the ring Is blue, and the oilier red. In the large halo the red la on the Inside In-side and the blue outside. The corona la rlnaie.l as a different phenomena that Is. the light from the sun or moon In encountering the small partlrlea In the cloud or which form the cloud Is broken up, scnttered or diffracted, like the graftings that Prof. Itnwlnnd ruled at the Johns Hopkins university. Diffracted Dif-fracted light may tie of two kinds. It may pass through fine material and be diffracted like In a transmission grating, grat-ing, or It may lie broken up by enronn terlng the fine partlrlea and being reflected. re-flected. We never havo diffraction nursed by a relleetlon of tho light from the small particles lu the cloud. The halo Is supposed to lie dun both to diffraction dif-fraction and reflection. When light Is diffracted It pusses through a medium whl.h both ill..er.M it and bend It out of lis rimiM'. ThiM the rnlnlHiw li. ; produced by the suul r'n pausing through the drop of wa'-r nnd the water wa-ter regional wn. ii o o: lt.. lo the sun Halo occur only l:i tiie hlvher clouds nnd are more frequent than the corona. co-rona. Somitlrui the haloa Internet each other, an.l nt tli'r Intersection round pal. lie are formed, called nuwk suns. The particles of matter forming the medium fur refrnitlng the light are mostly smnll Ice crystula or Ice nerilles Mr. tlllilersleeve. the late president of the Haitimore Astronomical Boclety, related that nt various limes he had observed snow storms through th telescope tel-escope while mnking daylight observations obser-vations of the stars and planets. At ahy rate there la considerable aolld matter In th atmosphero that we sometimes observe In sweeping around with the telescope. On rare occasions we can in a bird Hying across th field of view, of which not a sign ran be seen with the naked eye. Then, again, small apecka fly acrnsa, looking like amnll meteors. At one time I ob-aerved ob-aerved a ray seeming to have Ita origin at the setting aun on the hnrlion and extending as a slender beam clear to th tenlth nnd lost to view a little to the east of the lenlth. The mock sun ar mostly aeen In high latitude. We can then come to the conclusion that halo and mock auna are simply dua to th state of the atmosphere when It contains moisture, Ice crystals and know, and they existed from th remotest re-motest time, when the earth had been fashioned to Ita present condition, and there la no cause for alarm." llalllmore llalll-more Newe. |