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Secchi disk. The modified Secchi disk design used in fresh water. The Secchi disk (or Secchi disc), as created in 1865 by Angelo Secchi, is a plain white, circular disk 30 cm (12 in) in diameter used to measure water transparency or turbidity in bodies of water. The disc is mounted on a pole or line and lowered slowly down in the water.
Angelo Secchi S.J. (Italian pronunciation: [ˈandʒelo ˈsekki]; 28 June 1818 – 26 February 1878) was an Italian Catholic priest and astronomer from the Italian region of Emilia. [1] He was director of the observatory at the Pontifical Gregorian University (then called the Roman College ) for 28 years.
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The Regina Company was eventually acquired by Philips Electronics in 1995. Oreck bought the company in 1997, and in 2000, it was sold to the Royal Corporation, the owners of the Dirt Devil brand, which sold the vacuums under the Home Depot brand for a few years. [4] In 2020 Regina Vacuum LLC relaunched the Regina brand, offering a vacuum ...
Anti-forensics methods are often broken down into several sub-categories to make classification of the various tools and techniques simpler. One of the more widely accepted subcategory breakdowns was developed by Dr. Marcus Rogers. He has proposed the following sub-categories: data hiding, artifact wiping, trail obfuscation and attacks against ...
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