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Obtaing spectrum using a CD and a cereal box spectrometer Prisma aslike
A simple spectrometer can be constructed from a CD and a box. Make a slit on one side of the box. Place the CD on the other side at an angle of 60 degrees. Look down at the opening in the box. The slot should not be too wide, otherwise the spectrum lines will be blurred. It should not be too narrow or otherwise the spectrum is very weak. I use a 0.2 mm wide slit.
CD spectroscopy structure
my cereal box spectroscope (arrow: the slit) spectrum view
Let's look at the spectra of some common light sources. All photos of the authors with a Nikon Coolpix 995.
(1 bis) afternoon sun, the altitude 24 degrees (1b) sunset, elevation 0.5 degrees
(1c) high solar spectrum (1d) of low solar spectrum
This photo I took it before the total lunar eclipse of 2004. Light moon a full moon, was collected with an 8 "Dob telescope. The spectroscope was held behind the lens. As the moon is just reflected sunlight, the spectrum looks the same as a solar spectrum (1). It continues with rapt dark lines, ie the Fraunhofer lines (some of them are marked).
The moon The use of a telescope
Lunar Spectrum
HOW YOU CAN USE TO FIND this spectrometer THE SPECTRUM OF LIGHT differnt differnt.
FACTS
Prism spectrophotometer corset # 10565
Unsigned
In the research DB Brace made use of various types of spectrophotometers. Not satisfied with them, he invented a simple but effective new type that used two 30 ° -60 ° -90 ° prisms cement, along with a silver stripe between them. His device was made later by Schmidt & Haensch in Berlin, Germany and Gaertner in Chicago and was used, for example, on the Yerkes Observatory. Several of his rods remain in the department.
References: DB Brace, "Description of a new spectrophotometer and a calibration optical method", Philosophical Magazine 48, 420-30 (1899), DB Brace, "For A new spectrophotometer system work, "Astrophys J 11 (1900): 6-23 Schmidt and Haensch Katalog II ..: Spektralapparate, 1900, Katalog II Spektralphotometer, Pyrometer, etc, 1914 10 060. Large prism spectrometer #
Franz Schmidt and Haensch, Berlin, S.
The Schmidt & Haensch of Berlin offers this spectrometer for use with prism spectrophotometer DB Brace. The main scale is calibrated in units of 10 minutes of arc and with the graduated scale can be read 10 seconds of arc. In addition to the usual telescope for viewing and the collimator of the light source, this instrument has a tube collimator second to use your new system spectrophotometric corset that is described in the literature. Attached is the Department of 4-inch Brashear telescope aimed at the star Capella, a collimator and a source of standard light to another. This allowed quantitative measurements of the star spectrum.
References: Schmidt & Haensch Catalog No. 55 (1896) DB Brace, Philosophical Magazine and Journal of Science, 48, 420 (1899), DB Brace, Astrophysical Journal, 11, 6-23 (1900).
About the Author
THIS PROJECT WAS CREATED BY G.ANGEN CLETUS,INDIA,TAMIL NADU,TRICHY.
IN 23.5.2010
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