To use all functions of this page, please activate cookies in your browser.
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
The Christiansen filter (named after Danish physicist Christian Christiansen) is a narrow bandpass or monochromatic optical filter based upon a coarse transparent powder immersed in a transparent liquid. The liquid and powder have differing values of dispersion, while having identical refractive indices at one particular wavelength. As a result, light of that wavelength passes through the filter unaffected, while light of all other wavelengths is scattered by refraction. A typical filter is composed of glass particles immersed in a mixture of benzene and carbon disulfide. The wavelength of operation can be varied by changing the percentage of the two components of the liquid mixture, or by varying the temperature.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Christiansen_filter". A list of authors is available in Wikipedia.|