Show SUN IS IS- BLUE I Vii I a aIn In the summer qC of 88 a series of oC soar solar solar so so- lar ar observations was f nade at nade at the Allegheny Allegheny Allegheny Alle Alle- observatory the purpose of ot which was to test Prof ProC S S. S P. P Lansley's Langley's theory theon of or the blue sun A concise account of oC the preliminary results was published by Langley Langle In 1887 In which the effect of or absorption by the atmospheres atmospheres atmospheres atmos atmos- of oC the sun and the earth was expressed in the general statement that if f If w we wo could view the naked photosphere of the sun it would appear of a n violet Iolet or lavender tint The Thel reason of oC this Is that In the passage of the solar light through these atmospheres the rays roys DS of short wave length those length those at nt the violet end of the spectrum spectrum suffer suffer more from the effect of absorption ab than those thos at atthe atthe atthe the red end of or the spectrum Conse ConJ Consequently the tho light reaches us minus n n. considerable portion of Its blue and volet violet vo vio- lc let elements and receives thus thug a yellowish yellowish yel yel- el lowish tinge l' l Recently tl these observations have been subjected to an exhaustive analysts analysis and discussion by b Prof F. F 1 W W. Very of oC oCth th the Allegheny observatory Th The c con con- n- n lons at which he has arrived d are arc published In the current number of or th the Astrophysical troph Journal One of oC the most Important of ot these Is that the absorptive P- P tivo tive atmosphere ere of or the sun I Is very much more extensive than has hus he be beon ii supposed posed heretofore The T c corona that that mysterious halo of of pearly liht seen about the dark lunar disk at u thi tine lime of or a a. total eclipse of the sun sun sun-la m-I m is I really embraced within this He says The corona appears to contain con on contain tain B solid lI particles of or matter perhaps only a little lal larger er than molecules which probably diminish In size as the th distance from Crom the or Incandescent in incandescent incandescent In- In candescent cloud surface Increases Increase until until until un un- from the til at nt a considerable distance sun they cease to diffract an any but the he shorter violet wa waves V g of light Ir Very seems to consider this enlarged solar atmosphere as comparable with that of or the earth so far tar as regards the fa fact l that both are an Oiled filled with particles of or solid matter which Interfere Interfere Inter Inter- fere fore with th the free passage of lIgh Ugh through them them It is to these dust parti part particles particles cles Iles in the earths earth's atmo atmosphere that thai s due according to scientists the exquisite ite blue of oC the sky and a II similar effect ct of or the tine fine particles es In the bolar atno phere according to the theory o of Prof Vcr Very robs us Ul of or a portion of the violet Iolet rays rn's of ot sunlight and Rives gives eEl 1 us us a l linstead Instead of or a 0 white blue sun Philadel Philadelphia phia hla 1 |