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Are all bubbles spherical?

October 24, 2022

Bubbles in water are studied intensively. For modeling and measurement purposes it is sometimes assumed that bubbles are spherical, but this is only true up to a certain size: When the hydrostatic pressure difference from top to bottom of the bubble is...

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The History of Sequoia – Part IX

June 2, 2022

…Wherein we’ll learn about the LISST-Holo and what else happened in the late 2000’s! (Part VIII can be found here: https://www.sequoiasci.com/article/the-history-of-sequoia-part-viii/) At the PiE 2008 meeting, one of the presentations was by a young...

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On the Feasibility of Measuring Plastic Particles in Situ

November 27, 2019

As reports over the last 3-4 decades demonstrate increasing plastic concentration in the oceans, public and regulatory concerns have grown in parallel. Sequoia Scientific Inc. and other instrument manufactures are thus frequently contacted by scientists...

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Flocculation or Drift?

August 3, 2016

While testing a LISST-ABS in the laboratory with field samples, Dr. Benjamin van der Waal of Rhodes University in South Africa noticed an apparent instrument drift. He was using samples extracted from a river for this testing, so that the samples were...

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