I do not know exactly what principle of physics this straw is demonstrating, but I will take a stab at it: whether because it is black or not, it has absorbed and retained a certain amount of heat. Enough, anyway, to keep the liquid around it just that little bit warmer and thus precipitate out the bubbles. Sounds plausible, right? But I am guessing.
It’s a shame about the foliage but these are near-perfect ripples, and the impression I got was very much that the goose was just sitting there and making them simply because it could. A human equivalent might be holding a ruler down on a desk and making it go bdrrbbrrrddbrrdd. A pointless but pleasing application of physics.
For the first three weeks of this semester I have been giving some classes in the Chemistry building, where resides this interesting display: I’m sure you realise what is going on here. As today was the last of these three classes, and I may never come back in here again, I thought I would capture it while I had the chance. They have omitted to include examples of the radioactive elements, but that’s probably a good thing.
22/02/2022 was today’s date, and a Twosday too: so Radon, to bottom right, perhaps is the most representative of these.
The reason I am in Wales is to do a talk at the University of Aberystwyth, which I did tonight. Beforehand I had a tour of this facility. Aberystwyth is well out in the sticks — for its size (which is not large), the most isolated town in Britain — and thus has a focus on rural and agricultural research rather than, say, heavy engineering. But that doesn’t mean high technology is just something other people do. This is a near-fully automated robot greenhouse, full of computer imaging equipment and automated water dispensing pipes. And you thought growing your food was just a matter of getting the weather right…
It’s a small digital clock powered by two zinc and two copper rods stuck into two potatoes. Hence, a potato clock. Well, the run of landscape shots had to come to an end at some point, but I guess we can still call this ‘nature’?
Being 42 