Contact
Cum să cumpăr
Livrare
Consilier de cumpărături
engleză
656 b
30 de zile pentru retur bunuri
Clienții au cumpărat de asemenea
/
Carte broșată
96.22
lei
/
Copertă tare
216.01
lei
/
Carte broșată
178.68
lei
/
Copertă tare
768.56
lei
/
Carte broșată
237.90
lei
Soon after the laser was invented it became obvious that this new inst- ment, providingvisibleandinfraredradiationwithhighintensitydensity and small divergence, would be a great tool for remote monitoring of atmospheric properties by radar-like methods. The lidar method (li for light instead of ra for radio) is thus practically as old as the laser itself. In the beginning, measurements using light scattering of aerosols and dust particles were at the focus of attention, e.g., for investigating v- ibility or cloud heights. As lasers became more intense, and systems for detecting backscattered light more sensitive, Rayleigh scattering was also studied to allow parameters such as variation of the total air pressure or clear air turbulence to be investigated. Furthermore, Raman scattering allowed limited selective detection of gas constituents of the atmosphere. Increasing sophistication of laser systems made it possible tostudytraceconstituentsoftheatmosphere; thiswasthecaseassoonas frequency-tunablelasersystems, eitherline-tunableorcontinuouslyt- able, became available. This made selective absorption and ?uorescence accessible for detecting trace constituents with a sensitivity suf?ciently high to be useful. Improved methods such as the differential absorption method were alsoinventedandusedtomonitortraceconstituentsoverlargedistances.
Informații despre carte
engleză
Categorii
Dăruiește această carte chiar astăzi
Este foarte ușor
1 Adaugă cartea în coș și selectează Livrează ca un cadou 2 Îți vom trimite un voucher în schimb 3 Cartea va ajunge direct la adresa destinataruluiAr putea de asemenea, să te intereseze
/
Carte broșată
81.83
lei
/
Carte broșată
106.54
lei
/
Carte broșată
158.67
lei
Bună ziua! Sunt Libroamiko, consilierul dumneavoastră de cărți.
Cu ce vă pot ajuta?