studiot

Agreed +1 But my example would be "I am not well versed in this discipline, but I want to dictate the ethics of the way the real experts go about it" type of question.

That's playing with words. You can't have energy density without energy, which you claim emerges later. I could also say you can't have density without volume and therefore space either. In my opinion this conundrum is faced rather badly by all attempts to extrapolate backwards, including those claiming a big bang of some sort. I have never seen one that doesn't start hand waving when pressed. But then it is only one spectacular failure in a long line of such failures when over ambitious extrapolations are attempted, going back millenia yo mthe Bible trying to set the Earth age by adding up ages of a few named humans. By the way do you understand the difference between extrapolation and interpolation ?

And yet didn't you refer to energy density before everything else ? And isn't that a loop ?

Nah it's just in a time loop of its own. +1 😄

You may well be right about the funding. But promoting this issue by conventional methods doesn't seem to gain as much traction as social media pressure (groups) these days. Of course, letters, emails and so forth can easily be ignored (forgotten or lost) and only the sender is any the wiser. The pressure generated by the much more open and public social media seems more effective these days.

Really ? Then why is the title "An appeal to help........" and the first post states in bold, I am merely wondering about the effectiveness of writing to congresspeople. Which seems to me to be a clear statement of the objective of this thread. I have, at no point, attempted to discuss the effectiveness or otherwise of the technique as I don't know enough about it.

RFK has made this administration focus on the chronic disease crisis: Incoming trump admin with RFK signals new start for FDA It's what I was explicitly told by a staffer, and after my 9 months here in DC, it seems to be the way things work. The second comment seems irrelevant. Thank you for dismissing my questions so lightly. I am not american so I don't have first hand experience of writing to 'my' member of congress. But if my experience of writing to my elected reprentative in the UK is anything to go by, such a letter will just be ignored. So please answer the question I asked. How will this new regime force the medical suppliers to do anything ? It was rather rude to dismiss my example in such a way since those who directly suffered (and in some cases have died) when their voice (or letter) was silenced.

I note the self styled professor has been active since my post by hasn't deigned to answer my question directed at him about the 38% since he was the member who introduced that specific figure into a general statement about the effect of gravity on medicine. (Which I quoted). Thanks to those who pointed out that this is the gravity of Mars. My second point seems to have engendered knee jerk reactions to my second point, rather than discussing the only actual evidence we have about the effect of gravity on recovery outcomes.

It's a right question. I think because theoretical physicists uses only math, and do not consider the phylosophic problems of particles. They adopt, by default, particles in the absolutely empty space (Nothing), which is impossible condition. Thank you for your reply. But you didn't say what you think a particle is. So please tell us since that is crucial to your proposal. One further question, how does your model describe shadows ? What are they made of ?

In all honesty most of the would be Pi is something else brigade have actually latched on to some obscure (real or imagined) effect which has Pi in its definining expression. They then treat this as the definition of Pi, rather than the other way round, and claim all other uses are secondary or flawed. Again rather than introduce a new constant or parameter for their purpose. So I prefer to wait and see what mike has to say when he can add to (improve) his posting.

I see you are also a maths wannabe But of course there are units in maths - it is how we distinguish between length, area and volume and how they are handled, for instance. How about this famous identity ? [math]{e^{\pi i}} = - 1[/math]

Before I bother to look, someone please tell me that this is not another one of those golden ratio cranks. They can hangout 20 pages of drivel without blinking an eyelid.

No you got that one wrong. It would be reasonable to request a discussion to help you clarify. Since you like arguing with your teachers I hesitate to say this but they are one of the most useful factors in your education. This is because they provide something that cannot properly be provided any other way. Good teachers provide marked work. That is they go through the reasons why and why not. Further you say that this was an internal test. Again a good sign lost in the West with too much management of 'education'. The point is that you learn more from your mistakes than getting something right. So doing things, getting it wrong and finding out why is part of learning. But you need to get them wrong with no penalty, hence the internal test. But you have also told us that you are not interested in Science in the long run or in academic progress. Setting this aside, a quick run through of the issue. Reactions can be classified in many different ways, depending upon the point of interest. Sometimes several different categorisations apply as with combustion and oxidation. Howevver not all combustions involve combination with oxygen. Also not all oxidations involve oxygen at at. Combination with oxygen is the most elementary definition and a starting point. What definition do you have ? I fully expect the test was to see if you know and understand the 'core lisr' you posted. So I am glad to see that you were actually thinking about it. A good trick to master for exams and tests is to be able to pick out the answer the examiner is looking for if there is more than one possible.

First Where did the figure of 38% come from ? You need to provide references for this. Second I agree with the point that if you were unwell enough to need the surgery, how would you fare in the ascent from Earth in the first place ? However Both NASA and my local sports medicine clinic disagree with Ken's bald statement about worse outcomes. Do you have evidence for this Ken ? I don't wish to advertise but my only reference for this comes from their information so I have clipped it. I have never needed this treatment, but their other NASA piece of kit (photobiomodulation) certainly helped with my osteo arthritis condition.

It is not clear to me. A plane is of genus 0. Which means we can shrink any circle on the surface to zero ie a point. Which is what the OP asked us to do. But that does not imply that any 'packing arrangment' of such points will fill the plane, you have to use the right one. But no you cannot Tesselate a plane with finite circles.

How will writing letters to a Republican Congress (or even a Democrat one if ever) make any difference ? There are quite a few well established drugs and treatments that the manufacturers have declined or ceased to make simply because it is not profitable enough.

Well I grew up a little bit before that. In those days I really enjoyed Traveller's Tales and hans and Lotti Haas - both in black and white. We did have some full colour but it was cinefilm, made by Unilever on the subjects of Physics and Chemsitry. They were really good and came with some full colour magazines to back them up. I still have these. Most of the lectures I gave at conferences and the like were on prepared slides, I only ever remember one definite ppoint, entitled 'Cracks', which I gave at the Concrete Society. You should also acknowledge that much learning used to go on in industrial labs up and down the country. Sadly many of these have disappeared and the rest are a pale shadow of their former selves.

Some more links An interesting american discussion site about the subject https://permies.com/t/208521/tech/Venturi-effect-air-flow-buildings A technical paper on Hawa Mahal https://www.irjet.net/archives/V9/i3/IRJET-V9I3386.pdf

That's the whole point, there are no gaps in the real number line.

Architecturally this is called passive cooling. Here are some links. https://en.wikipedia.org/wiki/Passive_cooling How India's lattice buildings co...How India's lattice buildings cool without air conFor centuries, India’s architecture featured intricate lattice structures. Now, as modern architects search for better ways to keep buildings cool, it’s making a comeback.

The point is that polar coordinates will completely fill the plane or 3D space with the radius at infinity. David's problem is that he has used a boundary - the circle he wishes to fill. So you need to be able to describe that boundary in polar coordinates to use the method and further since he is filling a disk, the outer circle radius is constant. That means we can start with a single line of that radius and sweep it around one end in infinitesimal steps, remembering that a line has no width. As the radius sweeps around and angle of delta theta it covers all points in a sector bounded by the infinitesimal arc of the out circle. Summing all these goes to an integral as delta theta goes to zero.

It can be done if you rearrange your dots. The trick is to use polar coordinates not cartesian ones and arrange you dots (which in the limit have zero diameter) in radial lines and then consider the angle between each line, taking the limit as that angle tends to zero. You might also find the six circles and seven circles theorems interesting, along with Steiner chains. (they do not fill all the circle.) You may like to know that the radial method is part of the mathematics of s orbitals in quantum mechanics.

Despite the social media hype the presneter, Ella Al-Shamahi, is not Lara Croft2. She actually makes some very subtle points and questions. It is also true that some of her explanations have alternatives, but the story she tells does hang together in the large. Now that there have been 2 episodes that weave in lots of modern scientific analysis techniques, without baby explanations of radiological and other dating methods. Actually the dataing method I found most interesting were the growth 'rings' in teeth, not one I had heard of. Also interesting is the paleoclimatology evoked to explain why H Sap moved out of Africa and into Saudi and thence through S Asia to Indonesia and on to Australia. But yes the episodes are overlong because of the money wasted on CGI and dramatic music and repetition of clips where something useful was said or shown. Unfortunately that tendency is increasing and common to many programs these days. However you are under no obligation to watch it or expose yourself to the danger that you might learn something.

Not sure where to place this but anyway is anyone else watching the New BBC series about the evolution of Homo Sapiens. There are 5 separate 1 hour programmes in the series, of which the first has already been shown on BBC2. The presenter is a paleoanthropologist and interestingly a woman. I say interestingly not in a disparaging way but because there is a noticeably softer approach from previous 'hard sicence' programmes with male presenters. This programme is also bang up to date with much new material and hypotheses about the evolution of our species. As such it may well be of interest to all those who have been arguing about this subject recently.

Interesting. thanks. +1