sethoflagos

I was born in York, the UK's 'quaintest' city, and know of what I speak. Spaces such as this are invariably populated by supermarkets, banks, fast food franchises and similar commercial ordure. No sense of community whatsoever.

They Were LYING!! Part 79 of 1,056 Parts of Eastern Europe are actually very pleasant. Old Town Square, Poznan, Poland. Can't think of anywhere in the UK that can hold a candle to this.

I agree. Though I imagine that the freshly fractured water surfaces would be buried within a highly energetic aerosol mist that would be quite the reverse of smooth. The polar opposite ratio of surface tension to viscosity makes bitumen less inclined to go as far as aerosol formation, and far less eager to revert so rapidly from rough to smooth. The appropriate scaling factors (Laplace number, Bond number, Cavitation number, Ohnesorge number) span many orders of magnitude, so 'instant' is quite a relative concept.

I think the give away is that the OP reference fails to mention and distinguish their subject from Liquid Column Separation despite that being quite literally what they are describing. Of course, this doesn't prove they're the same thing, but then there'd have to be two phenomena the research team had never heard of. AFAIK only Chem Eng give it any serious study time. The equations are non-analytic which puts off most but since it's very effective at straightening piping elbows etc we have to look at it. And who else would stick a waterfall in a pipeline?

Think of two large diameter pistons face to face, with a liquid film bond between them. Air pressure on the external surfaces opposes rapid separation. If the pistons are drawn apart slowly, the fluid pinches in at the circumference and gradually separates from the edge to the centre with no velocity discontinuity. The growing space between the separated films is occupied by air. As more separation force is applied exceeding the sum of external pressure and van der Waals, the interface begins separating faster than air can fill the space, forming a vacuum and velocity discontinuity followed by a bang as the air catches up. Generally the pressure within the film will dip below its vapour pressure and boil a bit reducing the degree of banginess (basis of cavitation). Certain non-Newtonian fluids will like crystalline solids, support significant negative pressures in tension with consequent increased 'banginess'. All I'm really seeing here are the underlying physics of Water Hammer and Liquid Column Separation Tensile behaviour of elastic fluids covers some of the more polymery associated behaviours.

I usually do if the instrument has an unplated finish, and the patina is 'nice enough'. It's getting to be past tense now as I've sold a few (the Inderbinen went to New York a couple of years ago)

Adding 20% yeast biomass to existing artificial bee feed formulations is a complete diet apparently. A major benefit is that feeding domestcated bees on this not only greatly increases their brood raising performance, but also removes their reliance on natural pollen allowing native wild bee species to flourish also.

I do so hope that was posted for humourous effect! 😱 Warm soapy water, careful drying, appropriate lubricants (light machine/spindle oil & petroleum jelly for me), and meticulous oral hygiene. An occasional buff with Renaissance wax polish

MDMA is also notorious for causing acute dehydration. As @StringJunky says, a dry throat and elevated temperature won't help.

Just a mask to wear when cordial, constructive dialogue appears to have left the building. Perhaps you should PM me. I don't bite.

You should see a mechanic, or perhaps a fishmonger. I'm struggling to make 'six' and 'hello' sound different. Shchzhzhshch....itch.

It seems like an appropriate response to one whose sole intent consistently appears to be to wreck any meaningful dialogue. (And maybe payback for past ad hominems). ... which compares unfavourably to @DavidWahl 's well-considered, constructive response to what could well have been taken as a deliberately provocative critique. (It was). We both gained from the exchange which is surely the intent of this forum. I'm done with your abusive negativity for now.

It does, though the heavy lifting should be done by a mild abrasive rather than chemical action. In some formulations, Brasso uses a bit of oxalic acid (pKa 1.25) as its main chelant, though the pH is balanced by the addition of ammonia. One does not want acid pitting on the Bauerfeind bronze valve casing of a custom Inderbinen trumpet. Does serious damage to the resale value. (Actually wouldn't even use Brasso on mine!)

Engineered Yeast provides rare but essential pollen sterols for honeybees

https://en.wikivoyage.org/wiki/Polish_phrasebook Polish phrases for tourists.