Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Hückel matrix, degenerate eigenvalues of ∼  (1)
  • doppler shift  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 54 (1979), S. 245-249 
    ISSN: 1432-2234
    Keywords: Hückel matrix, degenerate eigenvalues of ∼
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The behaviour of degenerate eigenvalues in Hückel systems is investigated under insertion of an additional bond or an additional centre. In the first case the degeneracy of any given eigenvalue is reduced by not more than two, in the second case by not more than one.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Advanced Materials for Optics and Electronics 6 (1996), S. 245-247 
    ISSN: 1057-9257
    Keywords: persistent spectral hole burning ; imaging spectroscopy ; doppler shift ; solar lines ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Persistent spectral hole burning in chlorin-doped PVB provides a new method to record highly resolved images of extended objects of sufficient luminance such as the sun. The spectral resolution per pixel is much higher than with other methods, with the additional advantage of recording all the information in a single exposure. The signal-to-noise ratio has been greatly improved, making it possible to visualise the rotation of the sun on the basis of the Doppler shift of only one solar line. Since no selection about areas of interest has to be made beforehand (except for the limitations of the material itself), the method provides a useful tool for astronomical applications. However, to make it suitable for a broader range of experiments, new materials with higher quantum yields and a possibly broader inhomogeneous bandwidth would be needed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...