The principles of light and color: including among other things the harmonic laws of the universe, the etherio-atomic philosophy of force, chromo chemistry, chromo therapeutics, and the general philosophy of the fine forces, together with numerous discoveries and practical applications .. . HE SOLAR ATMOSPHERE. H I85 4. Why is it that the aurora borealis appears in its highestbrilliancy in the autumn unless it be that the nebulous matterwhich is ever revolving around the earth becoming condensed bythe change from warm to cold, falls sufficiently low about thenorth pole to receive the play of t
The principles of light and color: including among other things the harmonic laws of the universe, the etherio-atomic philosophy of force, chromo chemistry, chromo therapeutics, and the general philosophy of the fine forces, together with numerous discoveries and practical applications .. . HE SOLAR ATMOSPHERE. H I85 4. Why is it that the aurora borealis appears in its highestbrilliancy in the autumn unless it be that the nebulous matterwhich is ever revolving around the earth becoming condensed bythe change from warm to cold, falls sufficiently low about thenorth pole to receive the play of the magnetic and electric forces ?Why is it that meteors are also most abundant in autumn, if por-tions of this same nebulous matter, becoming condensed in thesame way, are not sent through our atmosphere by their increas-ed gravity ? XI. The Solar Atmosphere. 1. The heat of the sun is so immense that all of its metalsand other substances become intensely incandescent on its sur-face, or exist in the form of luminous vapors for thousands ofmiles from its body. Prof. Tyndall, in harmony with the opinionsof Mayer, Kirchhoff, etc., describes it excellently as follows :— Without doubt the whole surface of the sun displays an un-broken ocean of fiery fluid matter. On this ocean rests an. Fig. 154. Eclipse of 1858(Liais). Fig. 155. Eclipse of July 18, 1S60,(Feilitzsch). atmosphere of glowing gas—a flame atmosphere, or gaseous substances, when compared with solid ones, emit,even when their temperature is very high, only a feeble andtransparent light. Hence it is probable that the dazzling whitelight of the sun comes through the atmosphere from the moresolid portion of the surface. 2. The spectroscope, says Prof. Roscoe, is the instru- 186 Tin: sources OF light. ment by which the extraordinary phenomena of physics havebeen revealed, and the first step towards the extension of ourknowledge has been the examination of the light emitted bythose remarkable protuberances,
Size: 2190px × 1141px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectcolor, booksubjectpho
