The spectral lines observed in the absorption and emission spectra of atoms or molecules are the result of transitions occurring between different energy levels as electromagnetic radiation is absorbed or emitted. The frequency ()and wavelength (&lgr;)...

A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from an excess or deficiency of photons in a narrow frequency range, compared with the nearby frequencies. Spectral lines are the result of interaction...

ABSTRACT Spectral (bin) microphysics (SBM) has been implemented into the three-dimensional fifth-generation Pennsylvania State University-NCAR Mesoscale Model (MM5). The new model was used to simulate a squall line that developed over Florida on 27 July 1991. It is shown that SBM reproduces precipitation...

American influences advance on the European continent BERLIN For the first time, it feels like the reign of postserialist music is over in Europe. Not that there isn't a lot of postserialist music I love. But Boulez's Pli Selon Pli, Stockhausen's Mantra,...