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Kim · @kimbot
205 followers · 145 posts · Server ni.hil.ist

Today I learned that when water turns cloudy (eg because it's filled with bacteria) that's called . And there are standard tools to quantity turbidity.

The simplest approach is to lower a black and white disc until you can't see it anymore. Or equivalently, fill a glass cylinder until you can't see the bottom anymore. These devices cost like $30 and I can't understand why they're so expensive.

A more precise technique is to shine light into the water and measure how much of it gets scattered sideways. These devices cost like $300 and I can kind of understand why.

Anyway, I think I'm going to print out a black and white picture to put below my experiment jars. Then I can measure and adjust the biomass density somewhat more precisely.

#turbidity

Last updated 2 years ago

Alexandra Nozik · @Anoze4maps
463 followers · 85 posts · Server fosstodon.org

Talks on analysis of and data by Dipak Paudial and Awnesh Singh respectively took me back to university time & the studies in . Really great data sources as reminded today for applications like assessment or modelling.


#sentinel1 #sentinel2 #geoinformatics #jena #disasterrisk #water #turbidity #pacificgeospatialconference2022 #pgc2022 #gis #esa

Last updated 2 years ago

Stefano · @SDV
50 followers · 11 posts · Server fediscience.org

Scattering, , and a spectrophotometer part 1/n

imagine you have a solution or suspension going from looking clear to hazy then turbid/flaky when changing a control parameter (temperature, salt concentration...). If you have a UV-Vis spectrophotometer, you can try to quantify the "amount of turbidity" as a function of the control parameter.
The particles causing turbidity will scatter light away from the detector and decrease the transmitted intensity over a range of wavelengths.

#turbidity

Last updated 2 years ago

IT News · @itnewsbot
1945 followers · 239585 posts · Server schleuss.online

Rapid Prototyping to Measure Turbidity in Rapids - [RiverTechJess] is in the process of getting a PhD in environmental engineering an... - hackaday.com/2022/11/15/rapid-

#water #irled #esp32 #science #turbidity #watersensor #environmentalmonitoring

Last updated 2 years ago

GeekProjects News · @news
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Copernicus EU · @CopernicusEU
881 followers · 5805 posts · Server respublicae.eu

RT @Eurisy1: The @Occitanie Region did expansion works in Port-la-Nouvelle, a major French harbour.

To monitor water during the works, the Region relied on data from the satellites.

Curious to discover how enhance our system?🛰️

➡️youtube.com/watch?v=CqXJmFqzNJ

🐦🔗: nitter.eu/CopernicusEU/status/

#turbidity #Copernicus #satellites

Last updated 3 years ago

Niklas Jordan 🌳 🌋 🌍 🛰 · @niklas
114 followers · 1344 posts · Server niklas.social

RT @ZanderVenter6@twitter.com

Anyone in community know of good resources for monitoring ? Any apps, scripts, GitHub repos, NB papers. Maybe @gena_d@twitter.com or @jstnbraaten@twitter.com know?

🐦🔗: twitter.com/ZanderVenter6/stat

#turbidity #water #EarthEngine

Last updated 3 years ago