salt – Adventures in Oceanography and Teaching

24 Days of #KitchenOceanography — Double-diffusive mixing

mglessmer — Tue, 15 Dec 2020 07:00:52 +0000

Welcome to 24 days of #KitchenOceanography! Both English and German instructions below. Herzlich Willkommen zu 24 Tagen Küchen-Ozeanographie! Deutsche und Englische Anleitungen weiter unten.

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A “Siel” – the valve in a dyke that lets freshwater out but no salt water in

mglessmer — Wed, 08 May 2019 13:05:34 +0000

Ok now, after complaining about how I dislike mud and the “no water” (i.e. low water) times in the Wadden Sea yesterday, today I’ll tell you about some stuff I really love about the North Sea coast. For example, the pretty little villages full with shrimp trawlers everywhere! Picture above is Neuharlingersiel, below is Dornumersiel. […]

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Melting ice cubes & thermal imaging camera

mglessmer — Mon, 12 Jun 2017 05:54:05 +0000

I haven’t talked about my favourite experiment in a long time (before using it last week in the MeerKlima congress and suddenly talking about it all the time again), because I felt like I had said everything there is to say (see a pretty comprehensive review here) BUT! a while back my colleagues started playing with a […]

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Workshop prep and a riddle

mglessmer — Wed, 07 Jun 2017 17:13:51 +0000

Looking at the picture below, can you guess which experiment I am going to do at the MeerKlima.de workshop? Yep, my favourite experiment — melting ice cubes! :-) And I am obviously prepared for several extensions of the classic experiment should the students be so inclined… Now I only need to get the ice cubes from […]

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Taking the hydrostatic paradox to the next (water) level

mglessmer — Thu, 14 Apr 2016 16:06:53 +0000

How well do people understand hydrostatics? I am preparing a workshop for tomorrow night and I am getting very bored by the questions that I have been using to introduce clickers for quite a lot of workshops now. So I decided to use the hydrostatic paradox this time around. The first question is the standard […]

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When water doesn’t seek its level

mglessmer — Tue, 12 Jan 2016 06:37:55 +0000

Last week we talked about misconceptions related to hydrostatic pressure, and how water always seeks its level. Today I’m gonna show you circumstances in which this is actually not the case! We take the fat separator jug we used last week. Today, it is filled with fresh water, to which we add very salty water through the jug’s […]

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Why folic acid might be good for people, but not so good for tank experiments

mglessmer — Mon, 06 Oct 2014 04:25:21 +0000

I had to do the complete series of experiments, of course… The other day I mentioned that I had used salt from my kitchen for the “ice cubes melting in fresh and salt water” experiment, and that that salt was the super healthy one that was both iodized and containing folic acid. And what happened […]

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Melting ice cubes, again

mglessmer — Fri, 03 Oct 2014 04:49:14 +0000

Somehow I am stuck on this demonstration! I can’t let go of this experiment. Last time I posted about it, someone (Hallo Papa!) complained about the background and how I should set a timer and a ruler next to the beakers for scale. The background and timer I did something about, but the ruler I […]

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Conducting experiments at EMSEA14

mglessmer — Wed, 01 Oct 2014 19:44:03 +0000

Kristin’s and my workshop at EMSEA14. As I mentioned before, Kristin Richter and I are running the workshop “Conducting oceanographic experiments in a conventional classroom anywhere” at the European Marine Science Educator’s Association Meeting in Gothenburg, Sweden. There is quite an active Twitter crowd around, so you can follow the storyfied meeting or look out for […]

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The icy elevator

mglessmer — Mon, 29 Sep 2014 04:55:07 +0000

Weird things happening when ice cubes melt. Remember I said that there were weird and wonderful things going on when I last ran the melting ice cubes in salt and fresh water experiment? It is really difficult to see in the picture below (sorry!) but you can probably spot the ice cube floating at the […]

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