Spectrum Analysis Explained ...: Including an Explanation of the Received Theory of Sound, Heat, Light, and ColorEstes & Lauriat, 1872 - 123 pages |
Other editions - View all
Spectrum Analysis Explained Including an Explanation of the Received Theory ... Dana Estes No preview available - 2012 |
Spectrum Analysis Explained ... Including an Explanation of the Received ... Heinrich Schellen,Dana Estes No preview available - 2015 |
Common terms and phrases
10th of August absorbed absorption appears aqueous vapor ascertained atmos bands blue bright bands bright lines brilliant chromosphere colored rays comet composed continuous spectrum corona cosmical cloud dark lines discovery disk earth earth's atmosphere eclipse electric emitted ether ether waves F-line faculæ faint fixed stars flame Fraunhofer lines gaseous gases glass glowing green heat heavenly bodies Huggins hydrogen gas hydrogen lines impulses incandescent solid intense Kirchhoff liquid body Lockyer luminous gas magnesium magnitude mass means metals meteoric showers meteorite miles millimetre motion nature nebulæ nucleus object observed oxyhydrogen particles pass phenomena phere photosphere planets portion prism produced prominences reflected refrangibility revolution ring of meteors round the sun Schiaparelli Secchi seen self-luminous shows slit sodium solar eclipse solar spectrum solar spots solid or liquid space spectra spectroscope spectrum analysis sun's limb surface surrounded tail telescope tion umbra violet visible white light yellow
Popular passages
Page 87 - In the year 1860, he published his memoir on the relation between the emissive and absorptive powers of bodies for heat, as well as for light, in which occurs the celebrated sentence : " The relation between the power of emission and the power of absorption of one and the same class of rays, is the same for all bodies at the same temperature...
Page 79 - ... the room at the moment when the rod is vibrating four times in a second. Neither eye nor ear tell me of the presence of the rod, only the hand which feels the strokes when brought within their reach. The vibrations become more rapid, till when they reach the number of thirty-two in a second, a deep hum strikes my ear. The tone rises continually in pitch, and passes through all the intervening grades up to the highest, the shrillest note, then all sinks again into the former grave-like silence....
Page 131 - Jupiter.] attained that degree of density which must necessarily precede the formation of a solid surface. 61. SPECTRA OF THE FIXED STARS.* The fixed stars, though immensely more remote and less conspicuous in brightness than the moon and planets, yet from the fact of their being original sources of light furnish us with fuller indications of their nature. In all ages, and among every people, the stars have been the object of admiring wonder, and not unfrequently of superstitious adoration. The greatest...
Page 141 - ... is hydrogen. The great brightness of these lines shows that the luminous gas is hotter than the photosphere. These facts, taken in connection with the suddenness of the outburst of light in the star, and its immediate very rapid decline in brightness from the second magnitude...
Page 119 - Here one is reminded, by the fleecy, infinitely delicate cloud-films, of an English hedge-row with luxuriant elms ; here of a densely intertwined tropical forest, the intimately interwoven branches threading in all directions, the prominences generally expanding as they mount upwards, and changing slowly, indeed almost imperceptibly.
Page 142 - Klein have, therefore, expressed the opinion that the sudden blazing out of a star might be occasioned by the violent precipitation of some great mass, perhaps of a planet, upon a fixed star, by which the momentum of the falling mass would be changed into molecular motion, or in other words into heat and light.
Page 98 - AND THEIR SPECTRA. It would lead us too far from our subject were we to dwell upon the phenomena of the solar spots, important as they are for acquiring a knowledge of the physical constitution of the sun, or enter upon a full description of their form, their mode of formation and disappearance, their motion, their connection with the sun's rotation...
Page 172 - ... with us, and accomplishes its course round the sun, like the planets, in a certain fixed period of years. From this it is evident that the orbits of comets may occur at every possible angle to that of the earth, and that their motion will be sometimes progressive and sometimes retrograde. The history of the cosmical cloud does not, however, end with its transformation into a comet. Schiaparelli shows in a striking manner that, as a comet is not a solid mass, but consists of particles each possessing...