JCE Software, 6C1: Atomic Spectra-Graph

Atomic Spectra-Graph

Todd A. Surovell
Project SERAPHIM, University of Wisconsin-Madison, Madison, WI 53706-1396

Note:
This program is out of print.

Atomic Spectra-Graph displays the emission spectra of over 80 elements. The emission spectra are displayed over the range from 280 to 850 nm. The data are encapsulated into Microsoft Excel spreadsheets. A macro program allows the user to select an element, loads the appropriate data sheet, calculates the spectra, and displays a black and white line spectrum and a color visible spectrum.

The emission spectrum on neon as displayed in "Atomic Spectra-Graph".
The majority of the spectral data is taken from the Handbook of Chemistry and Physics, 59th ed. Emission data for a few of the elements was taken from the NBS Monograph 145, Part I, entitled Tables of Spectral-Line Intensities, Arranged by Elements. For most of the elements, not all of the spectral lines are included, only those of highest intensity. In order to give the visible spectra enough lines, the twenty most intense lines of the visible spectrum are included (inclusive of any other lines in the visible range of equal intensity to the twentieth line) as well as any in the applicable nonvisible regions with equal or greater intensity.
When the black and white spectra are drawn, three levels of spectral line intensity are used. The highest intensity line of a particular element is determined, and all the other lines of that element are compared to it. A line that is less than 30% as intense the most intense line, is considered a low intensity line, and is drawn in light gray. A line that is 30-70% as intense as the highest intensity line is considered to be of medium intensity, and is drawn in dark gray, A line greater than 70% the intensity of the highest intensity line is consider high intensity and is drawn in black. In drawing the color spectra, only two levels of intensity are taken into account (Excel has no capability of lightening and darkening colors): if a line is greater than 70% as intense as the most intense line of that element, it is considered high intensity, and has a width of two pixels; all other lines are considered low intensity and have a width of one pixel.
Hardware and Software Requirements
Software in Series C of JCE: Software requires an Apple Macintosh computer (Macintosh Plus, SE or SE/30, Classic or Classic II, any Macintosh II, Centris, Quadra, PowerBook, or PowerMac) with a hard disk drive and an 800 K or SuperDrive floppy disk drive. System Software version 6.0.7 or later is also required. If you are running System 7 or MultiFinder, at least 2 MB RAM is required. A Macintosh compatible printer is optional.
In addition to the hardware and software requirements listed above, Atomic Spectra-Graph requires Microsoft Excel version 3.0 or later. Atomic Spectra-Graph requires 0.9 MB of free disk space (not including Microsoft Excel).
Atomic Spectra-Graph is compatible with System 7.

First Published: August 1994
Citation: Surovell, T. A. . Atomic Spectra-Graph J. Chem. Educ. Software 6C1
Keywords: Lecture Aid; Computer Room; Simulation; High School; General; Analytical; Physical; Atomic emission spectra

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Last Updated: April 26, 2001
Created: December 4, 1996 Created by: J. L. Holmes
Comments to: jceonline@chem.wisc.edu

© 1997 Division of Chemical Education, Inc., American Chemical Society. All rights reserved.



Atomic Spectra-Graph
Todd A. Surovell Project SERAPHIM, University of Wisconsin-Madison, Madison, WI 53706-1396

Note:	This program is out of print.

Atomic Spectra-Graph displays the emission spectra of over 80 elements. The emission spectra are displayed over the range from 280 to 850 nm. The data are encapsulated into Microsoft Excel spreadsheets. A macro program allows the user to select an element, loads the appropriate data sheet, calculates the spectra, and displays a black and white line spectrum and a color visible spectrum. The emission spectrum on neon as displayed in "Atomic Spectra-Graph". The majority of the spectral data is taken from the Handbook of Chemistry and Physics, 59th ed. Emission data for a few of the elements was taken from the NBS Monograph 145, Part I, entitled Tables of Spectral-Line Intensities, Arranged by Elements. For most of the elements, not all of the spectral lines are included, only those of highest intensity. In order to give the visible spectra enough lines, the twenty most intense lines of the visible spectrum are included (inclusive of any other lines in the visible range of equal intensity to the twentieth line) as well as any in the applicable nonvisible regions with equal or greater intensity. When the black and white spectra are drawn, three levels of spectral line intensity are used. The highest intensity line of a particular element is determined, and all the other lines of that element are compared to it. A line that is less than 30% as intense the most intense line, is considered a low intensity line, and is drawn in light gray. A line that is 30-70% as intense as the highest intensity line is considered to be of medium intensity, and is drawn in dark gray, A line greater than 70% the intensity of the highest intensity line is consider high intensity and is drawn in black. In drawing the color spectra, only two levels of intensity are taken into account (Excel has no capability of lightening and darkening colors): if a line is greater than 70% as intense as the most intense line of that element, it is considered high intensity, and has a width of two pixels; all other lines are considered low intensity and have a width of one pixel. Hardware and Software Requirements Software in Series C of JCE: Software requires an Apple Macintosh computer (Macintosh Plus, SE or SE/30, Classic or Classic II, any Macintosh II, Centris, Quadra, PowerBook, or PowerMac) with a hard disk drive and an 800 K or SuperDrive floppy disk drive. System Software version 6.0.7 or later is also required. If you are running System 7 or MultiFinder, at least 2 MB RAM is required. A Macintosh compatible printer is optional. In addition to the hardware and software requirements listed above, Atomic Spectra-Graph requires Microsoft Excel version 3.0 or later. Atomic Spectra-Graph requires 0.9 MB of free disk space (not including Microsoft Excel). Atomic Spectra-Graph is compatible with System 7.


News \| Issues \| CD-ROM / Video \| Find It! \| Technical Support \| For Authors
JCE Online \| Journal \| Software \| Internet \| Happenings \| About JCE \| Contact JCE

Last Updated: April 26, 2001 Created: December 4, 1996	Created by: J. L. Holmes Comments to: jceonline@chem.wisc.edu

© 1997 Division of Chemical Education, Inc., American Chemical Society. All rights reserved.