Secchi
Encyclopedia
Secchi may refer to:
  • Angelo Secchi
    Angelo Secchi
    -External links:...

    , an Italian astronomer
  • Secchi (lunar crater)
    Secchi (lunar crater)
    Secchi is a small lunar crater formation on the northwest edge of Mare Fecunditatis. To the northeast is the crater Taruntius. The western rim is joined with a section of the minor Montes Secchi range. The rim of this crater has been opened in the northern and southern ends, leaving two curved...

  • Secchi (crater on Mars)
  • Secchi depth, a measure of turbidity
    Turbidity
    Turbidity is the cloudiness or haziness of a fluid caused by individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality....

  • Secchi disk
    Secchi disk
    The Secchi disk, created in 1865 by Pietro Angelo Secchi SJ, 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 the disk is no longer visible is taken as a measure...

    , an instrument used to measure turbidity
  • SECCHI (Sun Earth Connection Coronal and Heliospheric Investigation), an instrument package on each of the STEREO
    STEREO
    STEREO is a solar observation mission. Two nearly identical spacecraft were launched into orbits that cause them to respectively pull farther ahead of and fall gradually behind the Earth...

    spacecraft
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