bubbles – Adventures in Oceanography and Teaching

About neutrally buoyant particles, popcorn, and more bubbles

mglessmer — Wed, 20 Sep 2017 10:55:46 +0000

When you see all our pretty images of currents and swirling eddies and everything, what you actually see are the neutrally buoyant particles that get lit by the laser in a thin sheet of light. And those particles move around with the water, but in order to show the exact movement of the water and not something […]

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Getting rid of bubbles in our jet

mglessmer — Tue, 12 Sep 2017 10:30:02 +0000

Sometimes the devil is in the details… On our first day at the Coriolis platform in Grenoble, I took a picture of the “source” in our experiments (see above): The plastic box that is fed by a hose from above and that has one open side with a “honeycomb” (or: a make-the-outflowing-water-nice-and-laminar thingy, technical term) that introduces […]

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A string of bubbles

mglessmer — Tue, 12 Apr 2016 09:58:23 +0000

Have you ever noticed champagne bubbles that form as a string right in the middle of the glass and hardly anywhere else? This leads to the very cool pattern you see here: Astrid and I recently happened to notice how differently bubbles in champagne and in mineral water behaved. In the mineral water, bubbles formed […]

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Reading the water

mglessmer — Tue, 22 Apr 2014 05:43:54 +0000

Just because it’s fun! :-) I’ve mentioned before that I tend to stare at water when nobody else seems to find anything interesting to look at. So just because I’m weird, let’s look at some more water. For example here. What could have caused waves like those below? Yes. These guys went past and what […]

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Bubble size depending on pressure

mglessmer — Wed, 16 Apr 2014 05:42:40 +0000

More playing with a vacuum pump. In this post, we talked about how decreasing the pressure on water can make dissolved gases come out of solution. But what happens if you suddenly increase the pressure again? This is the same movie as in the previous post, just to remind you of what we did: We […]

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Gases dissolved in water

mglessmer — Mon, 14 Apr 2014 05:23:12 +0000

A simple experiment to show that there are really gases dissolved in water. Luckily, my parents like to play at least as much as I do. So when I got back from doing “real science” in Bergen the other day, they picked me up at the airport and showed me their latest toys: Vacuum pumps! […]

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