paulsutton

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

Thanks, I will make a note to include some more information next time. Paul

This was posted to the Fediverse recently and has created an interesting discussion, so I am posting the link to the research here too. Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024GL109280 Not quite sure what the solutions to this is really. Perhaps there are multiple ideas, I can see Elon Musk haling the rollout of Starlink.

I am not an expert in fertility, but I have read that there are other factors such as diet, even sitting for long periods or wearing certain types of clothing, heat etc. So antibiotics may be a small factor, if use is combined with other activity. In the US don't they use antibiotics in animals, do those animals also suffer lower fertility, ? Does this put those antibiotics in the food chain.?

Currently reading Research data visualization and scientific graphics, by Martins Zaumanis, which is the 2nd book in the peer recognized series, the first being How to write an impactful research paper. I finished reading this first. Nice series of books.

Update, I managed to get this working nicely using 2x AA batteries powering 2 motors at the front and the same for the other 2 motors at the back, bigger wheels also help. I am now looking to rebuild, motors will be glued on, with hot glue, rather than with sticky pads, gives a chance to do a quick re-design to make the wiring better. Thanks for the help / advice on this, really helpful. Paul

There is definitely a power issue. Using 2x cheap batteries and 2x Duracell makes a huge difference. I have wired up 2 motors, so that a battery pack can power 2 motors, then just need to do the same the other side. Paul

Hi Thanks for these suggestions, I will do as suggested. Paul

I am trying to build a small motor driven vehicle, this is toy size. I have a polycarbonate sheet and 4 motors, and 4 plastic wheels (but also have other wheel, so can interchange them. I have wired this up so far so that 2 of the wheels are wired up to a battery, the other 2 wheels are just attached to motors, my main issue regardless of how I do things, is that a motor plus wheel spins if held up, as soon as I put down on a flat surface, the motor + wheel stops turning. I am not an engineer, so not really sure what to do here. Thanks Paul

Ah OK thanks, I was probably confused by the diagram. So I can have A-T and T-A along with G-C and C-G I will have a look at what I have and make sure the right bits go together and disguard the wrong combinations. Thanks Paul

Thanks for this, Paul

Hi I am guessing this is the right place to ask this. I am building a Model of DNA using coloured craft sticks, which happen to be in 4 colours Red, Green, Yellow and Blue which is ideal for representing A G C T as the base molecules Amine, Thymine, Guanine, Cytosine As I am putting these in pairs, can I have the same molecule connected together? e.g AA GG CC TT Looking at the diagram on the compound chemistry https://www.compoundchem.com/2015/03/24/dna/ I am guessing not, as this does not show pairs that are the same. Just asking anyway. Going Ok so far, I just need some string to tie everything together. And yes I know I can buy one of these as a kit, but it is fun to do this way but also can help others do the same, as it is a cheap way of making the model Thanks Paul

Hi . Thanks for this This is for a home chem lab or rather for use at the library stem group. I don't think my budget will stretch that far so will stick to manual stirring, Paul