paulsutton

Agreed, why kill them, after cleaning the floor inside, what would happen if you created a more attractive location out side that would make them go there for food rather than come inside. I am sure there are also sprays etc that act as a deterrent to them, as in the chemicals in the spray causes them to go elsewhere as they don't like the smell / taste.

So could computer models be used to predict how a virus could mutate?

There is an info graphic on PFAS on the compound interest (compoundchem) website https://www.compoundchem.com/2024/12/06/pfas/

Copper Sulfate seems to have a use on Farms, and can impact water /. environment if not disposed of correctly.

I know, I was trying out different atomic numbers without updating the actual chemical symbol, however I was just asking if all the electrons should in the outer shell should be more spaced out. Na should, of course be displaying C for Carbon, so the bohr configuration is 2:4 (6). as Na is 19 (iirc) 2:8.8:1 There is an elements package that will display the modern shell configuration notation As you said, it doesn't matter too much I just make sure my chemical symbols match the number of electrons. Thanks Paul

In this case, the social services ignored the girl's complaints / disclosures they were being raped, trafficked and abused by 'Asian' and other Men, partly as the social workers did not want to appear racist (or that is one explanation). The police and others also ignored them when they tried to get help. So your question is valid, best asked the social workers who allowed this to carry on for so long.

Hi I came across the CTAN Bohr package ( https://ctan.org/pkg/bohr ) in the latest issue of the Ubuntu full circle magazine, this allows for the drawing of atomic structure electron shells, So on a basic level it just needs \usepackage{bohr} \begin{document} \bohr{6}{Na} \bohr{18}{O} \end{document} However for Carbon, the displayed artom seems to show all the outer electrons on one side of the diagram, they are spaced out, but I would expect the 4 outer electrons to be equally spaced out. I just wondered if this was correct, I am sure I remember being taught that for carbon, the outer shell the electrons would appear top, bottom, left right. Rather than as here. It could be a bug in the package, Thanks Paul

I think we can spend a long time discussing what happened, Some of the women / girls were underage, we know that people with power were complicit and enabled all this to happen. However, this is not the first time, look at Al fayed (Harrods owner), Jimmy Saville and the UK Rochdale child grooming gangs,, with social services seeing the victims as promiscuous (even though they were under 18, and I think under 16 in some cases). What is needed is as a society we step up, learn from mistakes and stop it happening again, as a science community we can't solve all these problems, what we can do is make sure the environment we work in is respectful, inclusive and there are clear boundaries of behaviour. On a wider note, we can then demand to hold others to account. Abuse seems far as common place, and easy to excuse, UK safeguarding guidance no longer lets us use terms such as 'kids will be kids' or 'boys will be boys' to account for behaviour we HAVE to challenge it. Looking back and saying this should not have happened is easy,

Thanks for the replies, certainly seems an interesting discovery and important for finding life on other planets and maybe how life developed here on Earth. If we factor this sort of discovery in, we may have to redefine what we mean by habitable or habitable zone in terms of radiation exposure.

I guess you also need to take into account how those substances react with the body, if they get absorbed and react with something else in the body, either natural or even just simple painkillers.

Hi I was reading an article on Science Daily about the discovery of a Lichen in the Mojave Desert, USA. This lichen has developed the ability to resist UVC radiation via a pigment. This got me thinking that I think most things biological can be traced back to genetics, so perhaps there is a genetic change that has taken place so this pigment develops. (probably not quite the right terminology there). in which case could it be possible to map the GENOME and indentify any dna / genes that are responsible for the pigment, then use CRISPR to spice these in to perhaps a plant that we can make polymers from (and make the polymer UVC resistant, or perhaps even some foods, so that these plants can be grown either on space vehicles or perhaps on the Moon or later Mars. Just asking as I am not sure if this sort of thing is possible Thanks Paul Reference ScienceDailyMojave lichen defies death rays—could life thrive on dist...Lichen from the Mojave Desert has stunned scientists by surviving months of lethal UVC radiation, suggesting life could exist on distant planets orbiting volatile stars. The secret? A microscopic “...

I sort of understand what has happened with the Experiment with turning Lead in to gold. https://www.symmetrymagazine.org/article/lhc-near-miss-collisions-turn-lead-into-gold So given the energy required to remove electrons is called Ionization energy and this is detailed as 1st 2nd, 3rd Expressed in Joules (or KiloJoules / mol / Electron Volts Periodic Table GuideIonization Energy Chart of all Elements (Full Chart Inside)Ionization energy chart of all the elements is given below.First ionization energy, second ionization energy as well as third ionization energy of the So what energy is required to strip all the electronic from heavier elements such as Lead, which as this has a mass of 82 then there would be 82 electronics. I know the LHC works at Mega and Giga electron volts, so if they are removing all or most of the electrons, is this a value that equates to all the different ionization energies added together. I am kinda guessing we don't need values for 4th,5th and higher values, as at least within Chemistry we deal with reactions that i think rely on the outer shell (valance) electrons. Furthermore, I probably don't quite understand some of this, but they must know how much energy is required for each element to lose all its electrons (if that is what happens) Thanks Paul

It doesn't, but Trump has made other appointments that have also left others confused.

There is a discussion on Mastodon about this and related issues, there is currently a big attempt to try and archive as much information as possible for the future, so papers, website content etc. I know that NASA has had to remove references to black and female scientists as one example. This is part of the DEI crackdown. Really not a good situation at all.

Good point, apparently babies can do this as a response to entering water,

Hi I am involved with a local STEM café and discovery centre, in Torbay. We have a unit thing, that consists of a container to hold sand, this is connected to an upright and a xbox kinect, and a screen, the idea is that you fill the container with sand, and the kinect can scan the contours of the sand and display this on the screen. Rather than using play sand, the proprietor wants to use Kinetic sand, as this is expensive to buy as we need about 200kg (container is quite large) he would like to try and make some. I have looked up some instructions to make this, but many of the instructions seem to use perishable food products such as corn starch. We don't want to be buying more play sand down the line to make more due to the food based ingredients going mouldy or similar. Apparently it is possible to make with silicone oil (I assume in place of olive oil or similar) however I have tried and failed to find any instructions for this. I tried to do a search kinetic sand and silicone oil, and ended up with instruction using olive oil. Just wondered if anyone had any ideas please, or where I can perhaps find some actual instructions. I think silicone oil is some sort of lubricating oil, not sure. Thanks Paul Ps the same unit also has various games built in that can be projected on the surface, so when we just had various objects in the container, the projected sprites could move around but also sort of avoid the objects placed in the container, I think it needed more calibration but we were just testing it at that point. I am aware that normal bought kinetic sand is non-toxic and using the oil may not meet this, however children using this will be under supervision, so it should be safe to use in that respect.

Hence i was hoping to find a better source of info than a paper article, I agree with what you're saying,

Saw this on the Fediverse so also sharing here, sounds pretty good to me, and if this gives more institutions access to anti matter for research that is a good thing. The most dangerous delivery truck? How a lorry-load of antimatter will help solve secrets of universe https://www.theguardian.com/science/2024/dec/08/cern-antimatter-secrets-universe-science Does anyone know where more information can be found about this, Or can they share if anything is found. Hope this is interesting anyway Paul

I am not too sure if this is the right forum category to share this. I happened upon this a few days ago and decided to share as it may be useful to anyone interested in the space station and developing projects to determine current location. This was posted to Phys.org Space station trajectory data now available https://phys.org/news/2024-12-space-station-trajectory.html Hopefully it is useful, I guess it will be useful for sites such as Heavens above ( https://www.heavens-above.com/ ), which does have details on when and where to look for the ISS Regards Paul

The lessons are excellent, the nice thing about so many different channels is that there should be one that suits an individual learning style or even better more than one.

I if I understand things correctly, a reference list is a list of sources that are cited in your document / paper etc., so in LaTeX each time you use \cite{key} it will add the details of that key from your .bib file. However, I think there are also times when you may list what sources have been looked at even if you don't actually cite them. Maybe this goes in an appendix, as it can also help with further reading. I think it also depends very much on what is being written and the requirements of the institution you are studying at or the journal you are writing for.

Very interesting, even though I can't help thinking I am watching blobs of liquid interacting, rather than 2 bodies of rock.

Agreed, any regime change needs to come from within.

Thanks, interesting topic though, So will the upcoming space based gravitation wave telescope help with our understanding? https://lisa.nasa.gov/

Just reading an artcle about a black hole ripping a star apart due to its gravity. https://scitechdaily.com/black-hole-tears-star-to-shreds-unleashing-cosmic-shockwaves/ Seems interesting, however I just wondered if this is a similar phenomenon that is mentioned in the Brian Cox series recently on BBC one where he mentions asteroids around planets also being pulled apart and forming rings. As with the paper above, this new disk is also interacting with another star, I think Professor cox talks about Phobos is going to one day break up, some parts will burn up, however the rest will form a ring or rings around Mars. So something similar is also happening on Saturn, where a moon is causing gaps in the rings. Both do see similar, only clearly what happens with a black hole and star is on a massive scale by comparison. Just asking Paul