Bathymetry is the study of the underwater depth of sea and ocean floors, lake floors, and river floors. It has been carried out for more than 3,000 years, with the first recorded evidence of measurements of water depth occurring in ancient Egypt. Bathymetric measurements are conducted with various methods, including depth sounding, sonar and lidar techniques, buoys, and satellite altimetry. However, despite modern computer-based research, the depth of the seabed of Earth remains less well measured in many locations than the topography of Mars. Bathymetry has various uses, including the production of bathymetric charts to guide vessels and identify underwater hazards, the study of marine life near the bottom of bodies of water, coastline analysis, and ocean dynamics, including predicting currents and tides. This video, created by the Scientific Visualization Studio at NASA's Goddard Space Flight Center, simulates the effect on a satellite world map of a gradual decrease in worldwide sea levels. As the sea level drops, more seabed is exposed in shades of brown, producing a bathymetric map of the world. Continental shelves appear mostly by a depth of 140 meters (460 ft), mid-ocean ridges by 3,000 meters (9,800 ft), and oceanic trenches at depths beyond 6,000 meters (20,000 ft). The video ends at a depth of 10,190 meters (33,430 ft) below sea level – the approximate depth of the Challenger Deep, the deepest known point of the seabed.

Video credit: NASA / Goddard Space Flight Center / Horace Mitchell, and James O'Donoghue
FRV DANA

RV is my pseudonym, and I am a textile professional and an avid reader with a strong interest in learning about new technologies. I have a passion for both historical and modern textile subjects, and the majority of my editing work focuses on topics related to textiles.

Welcome to my User Page

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Articles are to be written from a neutral point of view. Wikipedia is not concerned with facts or opinions, it just summarizes reliable sources. This usually means that secular academia is given prominence over any individual sect's doctrines, though those doctrines may be discussed in an appropriate section that clearly labels those beliefs for what they are. — User:Ian.thomson

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Bookshelf

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KittyWikipedia: The Communist Free Encyclopedia ON WHEELS!

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 This user is a participant in WikiProject Reliability.
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What did you do?This user includes edit summaries in their contributions and thinks that everybody should use them as well.
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Middle Ages

The barnstar

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  Your contributions are appreciated.
Great work on adding to and helping to preserve Bolt 7&6=thirteen () 15:54, 26 December 2020 (UTC)
  The Barnstar of Diligence
Thanks for your efforts in building up the encyclopedia. 7&6=thirteen () 18:51, 2 January 2023 (UTC)
  The Christianity Barnstar
Dear RAJIVVASUDEV, I award you The Christianity Barnstar for all your hard work in WikiProject Christianity-related articles, especially your recent creation of care cloth. Keep up the good work! Your efforts are making a difference here! With regards, AnupamTalk 08:46, 2 March 2023 (UTC)

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Tips and tools

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Objective

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  • Wikipedia's goal is to build and maintain an encyclopedia covering all branches of human knowledge.[1]
  • Medical topics: Jimmy Wales response

No, you have to be kidding me. Every single person who signed this petition needs to go back to check their premises and think harder about what it means to be honest, factual, truthful.

Wikipedia’s policies around this kind of thing are exactly spot-on and correct. If you can get your work published in respectable scientific journals – that is to say, if you can produce evidence through replicable scientific experiments, then Wikipedia will cover it appropriately. What we won’t do is pretend that the work of lunatic charlatans is the equivalent of “true scientific discourse. It isn’t.

Nicely done. Wales is essentially saying, we have standards. Deal with it.[2][3]

  • Wikipedia co-founder calls alt-medicine practitioners “lunatic charlatans”[4]
  •  
    Knowledge is often defined as justified true belief.
    Knowledge, Awareness of facts or being competent.
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[2][3][4]



Category:WikiProject Reliability participants Category:WikiProject Historical information participants Category:WikiProject Textile arts

  1. ^ "Wikipedia:Did you know", Wikipedia, 2021-07-08, retrieved 2021-08-04
  2. ^ March 24, oracknows on; 2014. "An excellent response to complaints about medical topics on Wikipedia | ScienceBlogs". scienceblogs.com. Retrieved 2023-04-03. {{cite web}}: |last2= has numeric name (help)CS1 maint: numeric names: authors list (link)
  3. ^ "Standards of Evidence – Wikipedia Edition - NeuroLogica Blog". NeuroLogica Blog - Your Daily Fix of Neuroscience, Skepticism, and Critical Thinking. 2014-03-25. Retrieved 2023-04-03.
  4. ^ Geuss, Megan (2014-03-25). "Wikipedia founder calls alt-medicine practitioners "lunatic charlatans"". Ars Technica. Retrieved 2023-04-03.