sethoflagos

So you don't regard say Levallois tool-making as a scientific advance? Good luck managing to procreate in the palaeolithic if you can't even make a decent pointy stick.

... an ability Leo G. Carroll perfected in the role of Trump in the 1933 Broadway production of 'The Green Bay Tree'?

Metabasite is a broad term for a metamorphosed basic (ie. low silica) rock. If that low silica rock was originally a basalt (as in this particular case) we can be more specific and call it a metabasalt. The terms aren't exactly synonymous, but ... A lot of these newer terms have appeared due to the modernisation of rock type systematics that the BGS has been implementing over the last couple of decades. More at BGS Rock Classification Scheme My crib sheet for metamorphics attached. Most of the outcrops in this area have been subjected to a 'greenschist' grade of metamorphism which is typically characterised by the green mineral chlorite. I'm not 100% sure that @exchemist's blue is the glaucophane blue of 'blueschist' grade, but it's possible. Classification of Metamorphic Rocks.pdf

You might be able to glean a little more from Geology of the Greenock district Memoir for 1:50 000 geological sheet 30W and part of sheet 29E (Scotland). From what I can make out, the beach walk north starting at the Highland Boundary Fault near Kilcreggan will cross: 500m of Bullrock Greywacke until junction with School Road 2000m of Dunoon Phyllite until just after beach crossing of Dowall Burn in Cove 300m of Beinn Bheula Schist to just before Knockderry House Hotel 100m of 'metabasalt' before continuation of Beinn Bheula Schist This last looks to be associated with the Loch Katrine Volcaniclastic Formation situated directly across Loch Long from the hotel, which is dated to Ediacaran Age. Since the hotel is built on this formation I'm guessing it's a good candidate for the photograph.

Shouldn't speculate really, but the first thought that came to mind was amphibolite. Similar tones, textures, banding, and definitely not out of place for that area.

Looks to be a higher grade of metamorphism than phyllite I think, but it's had knocking on a billion years of pretty tortuous goings on and is wearing its age and experience perfectly. No problem in enjoying it simply for what it is.

Spectacular stuff! Where is it? Coincidentally, I've just been watching a bunch of YT videos on shear zones on Rob Butler's channel. They go pretty deep while still remaining approachable to the interested layperson.

Packed a small wound in my arm one time with salt to stop it getting infected. Healed well enough but with more scar tissue than normal.

If you've not come across it already, you might find this online geological map of interest at https://www.bgs.ac.uk/map-viewers/bgs-geology-viewer/

Not sure the BBC really do this story full justice. Original JGS open access article and pdf download at https://www.lyellcollection.org/doi/full/10.1144/jgs2024-029

That's impressive! One reason I never got around to performing the full Trumpet Sonata in public was the difficulty in finding a pianist prepared to take on the accompaniment. But I never felt I'd truly mastered the solo part either so probably just as well. Maybe it's just coincidental that Wernher von Braun attended his music class but to my mind Hindemith's standard text on music theory (Craft of Musical Composition Book 1) would be better understood by music students if they had a reasonable grounding in physics. It reads very much as a Standard Model of Pitch Intervals.

I'd forgotten how much I enjoyed listening to this as a teenager. And how much almost all my schoolfriends didn't.

'Value' is too ambiguous a term here. Although it remains highly subjective in degree, 'artistic merit' in terms of craftsmanship, relevance and depth of personal expression is a better concept to work with I think. This at least excludes the market value of exclusive private ownership of the work which I see as an entirely separate (arguably psychotic) consideration. Some of the above posts seem not to make a clear, or indeed any, distinction between the two measures.

We're not there yet. Your OP seemed to suggest an inviscid classical orbital velocity field about some (undefined) axis of rotation: ie some particular solution of the Euler equations for some undefined geometry. The first thing you have to help us get our heads around is what exactly you mean by the word 'vortex' for a system that sounds as if it should have a local vorticity field value of zero throughout. It will differ appreciable from the familiar(ish) picture we have of vortex phenomena in viscous fluids. Maybe tell us the geometry of your containment? How you get the superfluid rotating in the first place? How does local fluid velocity vary with distance from the axis of rotation? Reassure us that the Euler equations aren't going to start producing singularities (which they are apt to do when presented with non-physical boundary conditions) Probably easier just to start and finish with this. Will a frictionless wall stop the car? 🤔 (I don't think this is quite as silly a question in context as it sounds. Again, how would one persuade a superfluid to rotate?)

https://en.m.wikipedia.org/wiki/The_Making_of_the_English_Working_Class Recent events following the 2024 UK general election have reminded me of how much this book influenced me in the late '70s. https://en.m.wikipedia.org/wiki/Herbert_Read The collection of essays 'Anarchy & Order' concerning (broadly) the role of art within a left-leaning libertarian framework is difficult to obtain outside the UK second hand market. But we'll worth discovering. https://en.wikipedia.org/wiki/The_Roads_to_Freedom Tied up a lot of loose ends for me and far easier to read than Being and Nothingness https://en.m.wikipedia.org/wiki/The_Master_and_Margarita https://en.wikipedia.org/wiki/Auto-da-Fé_(novel) Just 'must reads' imho. Beware: may cause offence to people called Karen (among others)