Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site ucdavis.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!ucbvax!ucdavis!ccs009 From: ccs009@ucdavis.UUCP (it) Newsgroups: net.astro Subject: Re: StarDate: June 29 The Birthday of Angelo Secchi Message-ID: <443@ucdavis.UUCP> Date: Thu, 15-Aug-85 15:55:52 EDT Article-I.D.: ucdavis.443 Posted: Thu Aug 15 15:55:52 1985 Date-Received: Sun, 18-Aug-85 02:16:02 EDT References: <293@utastro.UUCP> Organization: University of California, Davis Lines: 17 > A star's light can reveal what the star is made of. More -- after > this. > > June 29 The Birthday of Angelo Secchi > > A star's spectrum is just starlight separated into a continuous rainbow ^^^^^^^^^^ > band of colors. Dark lines appear at certain locations on the band -- If a spectrum has absorption lines then it is not a continuous spectrum but an absorption spectrum(not to be confused with emission spectra which are a completely different animal). > revealing the chemical composition of that particular star. So -- a > star's spectrum is its own personal fingerprint. No two spectra are > exactly alike. >