the brightness of spectral lines depend on conditions in the spectrum 's source
{"Image DocumentName": "The brightness of spectral lines depend on conditions in the spectrum\u2019s source", "Image ImageDescription": "Law 2 A hot, rarefied gas produces an emission line spectrum - a series of bright spectral lines against a dark background.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}