studiot

Can you reference any superconducting tubes that don't require energy input to maintain the superconducting state ?

Well you should care. Heat capacity is the capacity to absorb heat, yes. But once absorbed you want to store it and finally retrieve it, not loose it or waste it. This is where heat conduction and heat transfer coefficients become important. Thermodynamics forces you to store heat energy at a higher temperature than the surroundings you want to keep warm. Note this is different from chemical, mechanical potential or electrical energy. But you want to release it gradually as slowly as needed otherwise much goes to waste. The design of electric night storage radiators has greatly improved over the years as manufacturers slowly recognised this very important factor. Seth's cast iron Rayburn was a classic victorian implementation of this knowledge as were the massive cast iron fireplace surrounds they used to install. +1

Not sure where to put this so I am starting with other science if we can include bonkers maths as currently practiced by UK politicians. I have recently received notification from my electricity supplier company that my standard tariff has increased from £0.2992 per kW-hr to £0.3661 per kW-hr. So imagine my suprise to see this report by the BBC. https://www.bbc.co.uk/news/business-63329233 What ?????????? they will pay me £3.00 to use off peak electricity ? When do I get started, I plan to use as much as possible. Will I get rich quick ?

I suggest the following strategy. Start at the beginning and attempt maths questions from that year's material, from any source that you can get hold of so long as the answers are also provided. You don't need to achieve grades or marks, just to find out what you know and what you don't know. Hopefully, as you say, it will come easy at this stage and you will fly through the material. Quickly review wrong answers and check the teaching material for that topic if you get several wrong on a particular thing. Eventually you will find questions you can't answer. This is where you stop, go back and study the teaching material for that year, going forward at your own pace. Make sure you try the questions again and even if you don't get them all right, make sure you understand how to do them. Finally you will decide that you are no longer just filling in gaps but need to take your studies forward from where you left off a few years ago.

I hate to tell you this but it is just about impossible to learn any technical subject topic by topic. This is particularly true for Mathematics. The reason for this is that all the topics are inter-related. You need to know a little bit of arithmetics to study algebra and a little bit of algebra to study geometry, but also a little bit of geometry at the beginning of algebra and so on. That is why the the same topics are revisited at every grade, but at a higher level.

If Rees-Mogg backs it then it must be right. After all he is the barrister who backed the ex chancellor and tottering prime minister. So he is clearly a nuclear physics expert. As a matter of record the UKAEA has already attempted to build a fusion reactor at least twice and failed to make it work.

Sorry all I know is that the site search bar is the biggest joke on the site. Google finds more references if you put in the username, topic and scienceforums.net. This is also why you see old hands here saying things like "I seem to rmember a thread about this....years ago from xxxx"

Click on the author or name and get to the following screen Click in see their activity You may see many pages of it if they are prolific.

Like the cat, dead and alive ? +1 It's a funny old world.

Sorry, here's why

It's a good job I have a lot of patience since your geometric response to my question doesn't look like it's going to arrive any time soon. My question simply asked how your geometric shapes related to natural phenomena such as clouds. All I have received in return is deaf reiteration of previously preached mantras.

Well I take this as an admission that you got it wrong so well done as that's difficult to do +1. Now take this opportunity the Moderator has provided to draw a line, ask the Moderstor to close this - perhaps to the trash can - and start again including only essential topics to make a scientific point. You will always then have plenty of opportunity to develop this in further threads if anything useful comes of it. Oh and did I say "read the rules" (ask the mod if you don't knoe wher to find them) you did after all agree them them when you joined.

You are completely correct. I don't know what made me think there was , I checked several times and thought there was. My sincere apologies. 😳

How is a movement an 'element' ? Have you heard the old saw about the most accurate clock in the world ? It is never right. But a clock that is actually stopped is exactly right twice a day. Go and stand in Newgrange for up to 364 days. If you see darkness you know nothing has changed. This clock can measure 364 days without 'movement'. - I see youvoriginal premise no clock without movement has been watered down to no movement, change or decay.

I have to wonder about the 'christianity' of someone who claims to be a christian yet pours such invective on someone else who they believe has such a low IQ score. Is that really the christian way ? If so then count me out of it.

I haven't post much in this thread as I view it as a non-argument. However can you tell me how and why those two sentences of yours from your last post do not directly contradict each other ? 1) says "The mainstream view is that non locality has been demonstrated" 2) says " the vast majority do not think non-locality is real"

It is also worth noting that 'sea level' is not flat. The Pacific is about 400 mm higher than the Atlantic and the Indian is about halfway between. https://oceanservice.noaa.gov/facts/globalsl.html

@NTuft Are you aware that The Continuum Hypothesis can neither be proved nor disproved ? https://math.stackexchange.com/questions/189471/why-is-the-continuum-hypothesis-not-true

+1 @TheLogicalArc This has been place in the hard physics section. If it is not physics but soft philosophy please tell us and ask a moderator to move it to the appropriate section. By the way, what is a logical arc please ?

And there's poor little me thinking that it was just an exercise in pomposity.

This thread was inspired by a report on local radio about the Wedmore power cooperative which supplies solar derived power to the village but has raised the panels to allow sheep to graze under, keeping the grass down. Apparantly the sheep like athe bit of shade in the summer.

Yes this is the right place to ask and a very good question. As you are probably aware there is a tie up or connection between electricity and magnetism. Each of them on their own can produce a static field of their own kind. Note I say static. That is a static electric charge has a static filed around it and a static magnet has a static magnetic field around it. The connection comes when we introduce motion. On their own a moving charge or magnet means a moving field, still just a single electrical or magnetic field on its own. But in the right circumstances a moving electric or magnetic field is a changing field which can induce a sympathetically changing magnetic or electric field in free space or suitable materials. In turn the varying magnetic or electric field induces a varying electric or magnetic field. The result is called an electromagnetic field. Ther is no such thing a a static electromagnetic field. The best way to illustrate and explain further is to use the mechanism of operation of an aerial or antenna. I will need to draw a diagram but will post this first to be going on with.

Perhaps I mean optimal height, but please menation other considerations.

+1 Do you knoe which IEEE standard is it that says most IT change will be a downgrading ?

Please clarify this, preferably with a prope reference/quotation. Which wave function are you referring to? The the dependent variable in KG or QM ? In neither case is the probability directly dependent on the wave function. It is the square of the wave function that determines probability. Wave functions have inappropriate physical dimensions to be directly associated with probabilities. In the case of KG the wave' is a soliton.