studiot

Do tell.

There is a programme on the BBC called The Repair Shop. People take in all sorts of treasured items to be restored Stief bears, grandfather clocks, leather guncases, bicycles, music boxes, arcade penny slot devices, broken china, stained glass - the list is wide and diverse. The experts there (woodwork, metalwork, painting, leatherwork, etc etc cooperate to effect restoration) There are some absolutely fascinating projects each programme. As regards the aluminium. I think we should all remember (unlike the Mafia) that money is not the most important aspect of dealing with waste material. I say unlike the Mafia because there was a BBC (again) article about organised crime and waste cardboard rackets, which is apparantly fetching big money at the moment.

Molecules in a liquid don't vibrate.

I'm sorry this is a totally vague and unrealistic question, your answer to several very necessary detailed queries inadequate. Of course depth matters, as does the variation of depth, which is why I asked about bed topography. But there are many other vitally important factors which you have not addressed at all. By the way, ships and boats can be (and some are) stabilised against wave action by suitable centre of gravity arrangements.

Aluminium scrap including foil is commonly recycled in Europe.

Relativity is taken into account into modern treatments of bonding, starting with Dirac's equation. But, considered as speeding point charges and masses, electrons are not moving fast enough for the drastic and dramatic scenerios postulated by winterlong. There is always one frame in which no length contraction is observed. An interesting related quesion is "If the pilot and spaceship observe the universe contracted to 1m, how small does that make the observed size of the spaceship/pilot from the point of view of the universe" Makes the ship in Asimov's Incredible journery gigantic?"

Presumably your set has an ordering relation. Can you post an example ?

This question shows some good thinking. +1 The answer is molecules do both, but under different circumstances, notably the heating you have introduced. The condition where molecules escape principally from the surface is an equilibrium condition, where the temperature of the vapour and liquid are the same. Adding heat allows the liquid temperature to exceed that of the vapour, to the extent that the liquid eventually boils and internal surfaces (bubbles) form. This can all be represented on a phase diagram. How complicated do you want to get?

Another small point here. Although the universe will appear to be 11 metres long to the pilot in the direction of motion, in a direction at right angles to this the universe will appear to extend to its usual limits, whatever they may be.

This definitive paper suggests there is an online #Wolfram package for this. I will try to find it later. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6105178/

I have an older version MathCad. This is not compatible with Mathematica / Maple however (or Latex/) I haven't looked but are there any ready made packages available from Wolfram Alpha, that wouldn't suprise me at all. #Geogebra might be able to do it, and its free https://www.geogebra.org/?lang=en-GB Another free one is Maxima. This one boasts tensor calculations http://maxima.sourceforge.net/ What exactly do you want to run? Is it numerical or symbolic ? https://en.wikipedia.org/wiki/List_of_numerical-analysis_software

Before you shut the door I would like to observe that it would be a truly remarkable occurrence if the Earth were found to have any substantial interior cavities at all. Nothing to do with pictures from children's fantasy books, m,easurements on the interaction of the Earth with thr rest of the solar system gives us a pretty precise weight (mass) for the Earth. We have good measurements for the weight of the upper layers which shows that most of the mass in in the interior. So all I can say is that if the interior is empty space, that empty space must weigh one heck of a lot.

Understanding geodesics and curvature and how they interact is the key to this, not tensors. Tensors are just notation. But beware there are many misleading descriptions out there. Do you understand latitude and longitude? Navigators have been using these geodesics and curvatures for 500 years. They can form a simple intelligible route into the subject.

Well i'd like to quibble here. First of all the OP did not specify or even mention an explosion or explosive Secondly the OP specified pressure release, not pressure generation. Pressure release might be release from a high pressure bottle or other confinement - eg oxy - acetylene. I did look up the world record for containment pressure, it is quite suprising and several times the pressure at the centre of the Earth. Equally if the OP must have pressure generation then deep geochemical reactions probably fit the bill, such as the formation of diamond.

No. Philosophers can think more widely than Mathmaticians, who are constrained by the rules. Philosophers can perform rational thinking, not available in Mathematics. BTW Newton was a (Natural) Philosopher (the old name for Physics). Here is my favourite example of what I mean, written by Professor Swinerton of Nottingham University. This deduction cannot be stated mathematically, but is a masterpiece of rational thinking.

No they are defined in English according to IUPAC, which is purely conducted in English. They do not have separate words in say French for this, everyone (thankfully) uses (someone said borrows) the English to place into a sentence in say French. Just as there is no French word for 'rugby' . We have already seen examples of where English does the same from other languages. I also noted that this is not true of the classification of living things. I could note that many words in Earth Science (and other Sciences) spring from German, as well as the English ones. English takes culinary words from French eg jambon, porc, boeuf.

No its very widespread. It is just a statement of the equation for a control volume The base is the input. If you subtract the output, what remians must be left inside the control volume ie is the accumulation. Think income minus expenditure = addition to bank balance.

Since I stopped being involved in "my daddie's car is bigger than your daddie's car" arguments when was six, I consider the title question rather pointless. Better to discuss scientifically what to include in this list of words. Scientifically how many living creatures are there ? Don't they all have Latin names ? How about the list of organic compounds - there are several million of these. Each one is an English word. There must be lots of other disciplines, not all scientific, with long lists of specialist words that do not appear in a standard dictionary. Then, of course, many words both technical and in the dictionary have many different meanings. So should the title ask "How many meanings can a language denote ?" After all, the purpose of language is to convey meaning.

I have nearly a dozen books on my shelves devoted to curvature in Maths and Physics. Most are highly technical, but this one should be accessible to you, the English translation (the Germnas seem particularly good at this subject) is highly readable and recommended with barely a math formula in sight. Harald Fritzsch hold the chair of Theoretical Physics at Munich and is visiting Professor at Caltech and CERN. For all that he is very readable. Thank you. I should have added that there is nothing you can say in Mathematics you cannot say in English, but not the other way round.

Interesting, thanks, +1

I assume you are familiar with the English language. Nouns can be abstract. This ability is one of the strengths of English as a language as it provides for more than one type of noun, and all that entails. It is also a rational language, which means that there are things (trains of deductive thought) you can say in English that cannot be said in maths, ie mathematically.

There is a difference between logical thinking and rational thinking, the latter being far superior. Both good philosophers and good scientists should be able to utilise the additional capacity of the rational mode.

Not enough information. Required flow regime (tidal ? river ? no flow ? etc). ground and water bed geology and topography. (rock/ mud? cliffs? beaches? etc) Navigation requirements through channel. Why do you want to impede waves ?

Input = Output + Accumulation is correct. I learned this one because my first year flatmate mumbled it every day for a year and came top in Chemical Engineering. He said it was the only thing he learned for the exams and covered eeverything, which is not far from the truth. It is a general flux formula for momentum, mass energy etc. Some more from the time when formulae were not hidden by apps. The surveyors mantra [math]\frac{{{{\left( {{\rm{something}}} \right)}^{\rm{2}}}}}{{{\rm{twicesomethingelse}}}}[/math] I put this one in because I know joigus likes taylor - maclaurin series. It arises in the truncation of such a series for many purposes eg correction to a measured line on sloping ground [math]{\rm{correction = }}\frac{{{{\left( {{\rm{heightdifference}}} \right)}^{\rm{2}}}}}{{{\rm{2slopedistance}}}}{\rm{ = }}\frac{{{\rm{\Delta }}{{\rm{H}}^{\rm{2}}}}}{{{\rm{2L}}}}[/math] Deviation of a circular arc from the straight (tangent) [math]{\rm{Offset = }}\frac{{{{\left( {{\rm{straightdistance}}} \right)}^{\rm{2}}}}}{{{\rm{2circleradius}}}}{\rm{ = }}\frac{{{\rm{\Delta }}{{\rm{L}}^{\rm{2}}}}}{{{\rm{2R}}}}[/math] Finally there is 'onion differentiation' - differentiation from the oustside in. When differentiating a complicated trigonometric expression "First the power, then the trig, then the angle" is the rule

Circuit diagram including earthing arrangements please?