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Show JR IS DRIED 1,1 BY RAINSTORM K ;on ixn Rises Before It Is Up and Sets After It Is I ' Down, Another Fact WASHINGTON'. July 3. A. raln-rtn raln-rtn dries the air. more goes up tan comes down, as tho sun st ie air grows warmer, the hotter the ID grows, the colder the earth be-Unes, be-Unes, the sun rives before It Is up I Id sets after U Is down, these are ronx statements and sound like a Iry tale, but thy Ar a11 tru Dr' ! '. J Humphreys, quo'ed In the an-1 j ial report of the Smithsonian lnstl- I itlon. whi-h ha Just been made bblle. explains all of them. They I ft perfrc'l well known to scientists : 4 ! not to laymen (As r-veryone knows. Dr. Humph- I ys declares, water evaporates Riid I taken up In the air a vapor. Thi i btlon is continuous all over th: irth and the atmosphere would soon D Ecome very soggy If It weren't dried, II . Rain is th collection, or run-M run-M jnsatlon. nnd precipitation of fhesr feist u re particles, consequently, the. ore It rains the less water there is: ift in the atmosphere. or the drier e air becomes S MOISTl Ri; f.OFS UPWARD. - f.Th-- cond of Dr Humphreys' Iraio--- seems flatlj to con trad i L (.1,1 saying whatever goes up hist r nnie down Howev er, s I In , rltfr exprese. it vertical clrcula-! won in the atmosphere Is only gravl- ' fctional action, consisting in the slnk-Bg slnk-Bg of relatively cold and therefor ftnse air and lining of warm and MVht ah Contracted air dcsc-en.l- Ed ii'inj h 1 1 ascendi Therefore, Jiass for mass, i he volume of de-j Ending air is always larger than , (Kat descending. In terms of mns. I Bso. Dr. Humphreys says, descend--afaf; air is less than ascending. for pr while rising contains Immense Kantitie of water In supenslon. i hich lines nol return to earth wl'hi. I Kt air but as ra-u. hall or miow The I W that rises from the land -surface greater in ma-.- ly lejst 20,000,-00 20,000,-00 ior i"5' ! nd, 'he .,,.- ir of rorld precipitation, than that v escends. he says I iThc third paradox Is met (t l J H I stating that th.- warmest pari ol Mae day Is noi .it noon, when the sun I at meridian or overhead and should I lemlngly be penning down greater T eat, bur severs' hour-. I. in r .11 the fternoon. That is because the sur-icc sur-icc of thi- ' n 1 h ,.rn! ii..- lower in- frs of air continue 10 absorb more Dieat from the upper layers for some I me after the latter have been re-I re-I Bving the maximum amounl ol heal idiation from tin- un. OXF REMAINS THEORY. I While 1'. 1- not yel universally con-I con-I P'1 ,nal next puzzler "the liot- Mr the sun, ilie ( older tin earth, a bib Is true. Dr. Humphreys states l4l ie (Vjilcmi in f.t'.or of It 1-j already H iry i-trong 'rii -:i are several ex-,,lanations ex-,,lanations offeued The firsl fa thai creased radiation from tin- -mi I luses earth's air currents to flow I fcre rapidly, bringing down a greatei Uantity of cooler air from high lati-JUdes lati-JUdes to lower. He rejects this -MBanatmn, however. Ijf The temperature of the sun itself Kries and cun spotH are eruption! Ilkuscd by heat activitv r Is Known,, p continues, that earth's temperature imrles with spot activity; that thoj IBon- spots there an on n.e mm. th-?' boler the earth :. nrurature becomes wnu ice versa mso. mat tnc BUI) S fjbrona is In la g nn tsun only so much dust, mu interfere with pass- re of radiation through It. II tter sun more yp"is; more spo -Henser corona; den-o corona less 1 JkdiJition received on the oarih and ejfarmer cllma:.- HOTTEH. YET COLDER. Another explanation a the heat ab-frrblng ab-frrblng quality of t":.ne, whit h 1 m great er quantltj In the upper Mr 3e conclude- ih-it the donsei 3PH passaKe of -ome per , . in ,j th"-1 Bra-lolet rays, some of which 1 -pg on cold dry oxygen In the upper (strata form ozone, in times of maxl-luti maxl-luti spots there must, then, be U -Uone But oan- absorbs great r.ount of earth radiation, therefore the earth should be receiving in 1 3B)reused amount of lie.ii al ihis time Wmight nevertheless crow colder )., Jause of the coincident depletion of heat-conserving o;;one blanker, it I also said that cirrus cloud pi jus haze Is mon generall p. iM earn, atmosf. hero during spol jjvity. and this 1,1., nkel of Cl0Ud Hit fonn of the solai radiation PThe reverse paradox then, which ,-bo ,-bo found to he true, may be burned for in the same way Bun1 biosphere is clearer during spot Hnimum and although there ma tually be less heat coining from the sun h larger percentage is allowed to reach the eartn through the thinner thin-ner blankets it ITS BEND in mi; The paradox of the sun rising be-j be-j fore it is actually up and setting a(-I a(-I ter It actually has gone down, is ex- plained by (he Fending of light, wave when passing through the air. A , srick, when placed in clear water, seems to bend' B lighr ray when sent j through the air does actually, bend. I The rays from the rising sun are bent j when they strike the air envelope Tins angle varies according to well known laws, but on the average, the Ufjht from the sun Is bent 34'.2 ec-onds ec-onds of degree, so that the upper limb Of the sun when first seen Is actually' half a degree below the horizon. As the angular diameter of either- sun, moon ar .star is less than this fraction, it follows that when the sky Is suf-1 ficiehtly clear the whole of either relay be seen before even its topmo.-'. portion Is geometrically above the horizon. While the reverse is not absolutely correct astronomically, it is added, when sun. sia1' or moon aei, because of the slight modification of refraction refrac-tion due to earth rotation nevertheless neverthe-less the difference is exceedingly slight Consequently, as the light ra are bent upward by earths atmosphere atmo-sphere the sun has actually gone down before II Is seen to set by a, terrestrial observer. |
