The Astrophysical journal . Doppler effect.—Ina gas which is made luminous by purely thermal means, and which isemitting a line-spectrum, the carriers of the radiation have their. 6 186 J. STARK velocities in all possible directions; in consequence of Dopplersprinciple the lines will therefore be widened on both sides. If thedensity of the luminous particles remains constant, this widening mustincrease with the temperature. These are inferences which havealready been drawn by other observers. Our purpose here is merely tocall attention to the bearing which the above results concerning thed
The Astrophysical journal . Doppler effect.—Ina gas which is made luminous by purely thermal means, and which isemitting a line-spectrum, the carriers of the radiation have their. 6 186 J. STARK velocities in all possible directions; in consequence of Dopplersprinciple the lines will therefore be widened on both sides. If thedensity of the luminous particles remains constant, this widening mustincrease with the temperature. These are inferences which havealready been drawn by other observers. Our purpose here is merely tocall attention to the bearing which the above results concerning thedependence of the intensity of radiation upon translational velocityhas upon this type of widening. TABLE xvPotassium, Principal Series TABLE XVI Aluminum, Second Subordinate Series Intensity Wave-Length Intensity \\ ave-Length Arc Spark Arc Spark 7699 7666 1010 8 8 68 46 24 42 11 8 8 1010 }- s ? i ? IOIO IO IO • 6 4 82 4 1 TOO 50 32 4047-04 ? 2 X 2992-3 TABLE XVIIZinc, Second Subordinate Series Intensity Wave-Length Intensity Wave-Length Arc Spark Arc Spark 10IO10 IOIO 8 776 ?500300 1053 22 554 432 111 I 2493-67 ^ RADIATION OF CANAL RAYS IN HYDR
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectspectru, bookyear1895
