Hydroscope

The word hydroscope is used to mean any of several instruments related to water.

  • One kind is an instrument for making observations below the surface of water,[1] such as a long tube fitted with various lenses arranged so that objects lying at the bottom can be reflected upon a screen on the deck of the ship that carries it. These are built with a large tire tube that supports the screen and covered by an acrylic dome for protection.[2]
  • Another kind detects subsurface water through nuclear magnetic resonance using the surface nuclear magnetic resonance technique.
"Hydroscopic" redirects here. Not to be confused with hygroscopic.



Sources and notes
  1. Worthington, David (2003). Dictionary of Environmental Health. London: Spon Press. p. 135. ISBN 0415267242.
  2. Giaccardi, Elisa (2012). Heritage and Social Media: Understanding Heritage in a Participatory Culture. London: Routledge. p. 222. ISBN 9780415616621.
  3. Booth, Charlotte (2017), Hypatia: Mathematician, Philosopher, Myth, London: Fonthill Media, ISBN 978-1-78155-546-0 pp.113-114
  4. Anderson, Marlow; Katz, Victor; Wilson, Robin (2004). Sherlock Holmes in Babylon: And Other Tales of Mathematical History. The Mathematical Association of America. p. 57. ISBN 0883855461.
  5. "Synesius, Letter 015 - Livius". www.livius.org. Retrieved 2019-02-06.

1 'For the sake of completeness we must mention the fact that SYNESIOS in his letter to HYPATIA mentions a hydrometer, which according to some was already known in the fourth century AD to PRISCIANUS, that is a century before SYNESIOS and HYPATIA.', Forbes, 'A Short History of the Art of Distillation: from the beginnings up to the death of Cellier Blumenthal', p. 25 (1970).

4 'In 402, Hypatia receives a letter from the ailing Synesius giving a brief description of what he calls a hydroscope. This is a scientific instrument which was then in common use, although Hypatia is often credited with its invention.', Waithe, 'Ancient women philosophers, 600 B.C. – 500 A.D.', p. 192 (1987).


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