Dictionary of ichthyology. 2009.
Secchi disc reading — a measure of transparency; see Secchi disc … Dictionary of ichthyology
secchi disc — ˈsekē noun Usage: usually capitalized S Etymology: after Angelo Secchi died 1878 Italian astronomer : a reflective disc lowered into a body of water to permit measurement of the relative transparency of the water by recording the depth at which… … Useful english dictionary
Secchi disc — /ˈsɛki dɪsk/ (say sekee disk) noun a disc used to gauge water clarity by measuring the depth at which it is no longer visible from the surface. {created in 1865 by Pietro Angelo Secchi, Italian astronomer, 1818–78} …
Secchi disk — or Secchi disc [sek′ē] n. a circular, white or colored disk lowered into a body of water to estimate the clarity of the water by measuring the depth at which it disappears * * * … Universalium
Secchi disk — or Secchi disc [sek′ē] n. a circular, white or colored disk lowered into a body of water to estimate the clarity of the water by measuring the depth at which it disappears … English World dictionary
Secchi depth — a measure of transparency; see Secchi disc … Dictionary of ichthyology
Secchi disk — The Secchi disk, created in 1865 by Pietro Angelo Secchi, is a circular disk used to measure water transparency in oceans and lakes. The disc is mounted on a pole or line, and lowered slowly down in the water. The depth at which the pattern on… … Wikipedia
Angelo Secchi — Angelo Secchi † Catholic Encyclopedia ► Angelo Secchi Astronomer, b. at Reggio in Emilia, Italy, 18 June, 1818; d. 26 Feb., 1878. He was the son of a joiner, Antonio Secchi. His mother (née Luise Belgieri), a practical middle class… … Catholic encyclopedia
Enrico Caruso Compact Disc discography — Enrico Caruso with phonograph This is a list of some notable compilations of recordings of the famous Italian opera tenor Enrico Caruso (1873–1921) on compact disc. Caruso died nearly three decades before the commercial introduction of long… … Wikipedia
Прозрачность (гидрология) — У этого термина существуют и другие значения, см. Прозрачность. Чёрно белый диск Секки Прозрачность показатель, характеризующий спо … Википедия
