Crossword-Solution: DOPPLER 7 letters, 8 clues 🏆 scrabble score: 12

But because the wanted target is moving, while the clutter is not, a filtering system based on the Doppler Shift principle (even when the echo is only one or two Hertz different) will lock on to it and track it as long as it stays in motion.

Please ask Capellmeister Doppler where these things are to be procured genuine, and send them me as soon as possible to Weymar.

Doppler and tell him that I very much wish he could arrive with you on the 4th August at latest? I hope he will not refuse me this pleasure--and if it is not inconvenient to him will he also bring his flute and undertake the part in Faust? With regard to the travelling expenses I have already written to my cousin Eduard; he is to put a couple of hundred florins at your disposal; for it goes without saying that neither you nor Doppler will be allowed to spend a groschen out of your own purse for the journey.

Franz Doppler has left the best possible remembrance of his rare talents and qualities at Budapest, where during many years he fulfilled the duties of conductor to the theater, and shone by his virtuosity (very celebrated in Europe) as a flute player--an instrument which Frederick the Great condescended to use.

Doppler's Operas "Beniowszky" and "Ilka" were favorably received; and up to the present time "Ilka" is the only Hungarian opera admitted to the repertoire of several theaters in Germany.