Mordred Posted Sunday at 05:32 PM Share Posted Sunday at 05:32 PM no problem try to think of it this way any complex problem is composed of little problems. In a sense its similar to programming you break the program into smaller simpler steps to get the final form. Its no different in physics you start with classical physics then you build it up to your complex systems. Every physics theory is comprised of kinematics (equations of motion) even when those equations of motion are waveforms they have vector equivalence. Link to comment Share on other sites More sharing options...
Imagine Everything Posted Sunday at 05:33 PM Author Share Posted Sunday at 05:33 PM 46 minutes ago, Imagine Everything said: 48 minutes ago, Mordred said: thermodynamic hydrostatic fluid equations That sounds fascinating. I'll take a look after I get through your previous post. Thanks Looked at that a little, more yikes. Ok not ready for that yet, hopefully with time I'll start to understand it. Link to comment Share on other sites More sharing options...
Mordred Posted Sunday at 05:37 PM Share Posted Sunday at 05:37 PM start with f=ma then recognize pressure is force per unit volume Link to comment Share on other sites More sharing options...
Imagine Everything Posted Sunday at 05:42 PM Author Share Posted Sunday at 05:42 PM (edited) On 11/8/2024 at 3:18 AM, Mordred said: E2=(pc)2+(moc2)2−−−−−−−−−−−−√ What is the long sign/symbol that covers the last part of the equasion called? For some reason it seems to have come out backwards....ish Edited Sunday at 05:44 PM by Imagine Everything Link to comment Share on other sites More sharing options...
Mordred Posted Sunday at 05:44 PM Share Posted Sunday at 05:44 PM (edited) Square root symbol encompasses the RHS of the equal sign. Edited Sunday at 05:44 PM by Mordred Link to comment Share on other sites More sharing options...
Imagine Everything Posted Sunday at 05:49 PM Author Share Posted Sunday at 05:49 PM Thanks Mordred I found this https://www.khanacademy.org/science/physics/one-dimensional-motion/displacement-velocity-time/v/introduction-to-reference-frames so off to watch it now but would you know of any other online physics for beginners/dummies courses you could point me in the direction of please? Link to comment Share on other sites More sharing options...
Mordred Posted Sunday at 05:56 PM Share Posted Sunday at 05:56 PM Sure I will dig up some good lectures this evening for you Link to comment Share on other sites More sharing options...
Imagine Everything Posted Sunday at 06:25 PM Author Share Posted Sunday at 06:25 PM 28 minutes ago, Mordred said: Sure I will dig up some good lectures this evening for you Thanks Mordred. Link to comment Share on other sites More sharing options...
studiot Posted Sunday at 06:30 PM Share Posted Sunday at 06:30 PM (edited) 1 hour ago, Imagine Everything said: Sorry I don't have a physics keyboard so I can't write it the way you do. 1 hour ago, Imagine Everything said: Sorry I don't have a physics keyboard so I can't write it the way you do. Just a little bit of help here. Charmap Many of the symbols used, including the square root sign, are not available on the ordinary keyboard but can be obtained using charmap if you are using Windows (any version) In later versions just type charmap into the query box and press return. Boxes like these should open up. https://www.bing.com/search?q=charmap+symbols&form=WNSGPH&qs=SC&cvid=0f0cbd2b7805469e9dcdfe1e8cfc51c4&pq=cgarmap&cc=GB&setlang=en-GB&nclid=74D28496F4DE45C06BECB76344916980&ts=1731258460021&wsso=Moderate You can then scroll up and down. Select a particular character Copy it and paste it into your text. Extra hint It often pays to select several special characters and paste them in and add one more step Delete the ones you don't want at any one place. Edited Sunday at 06:31 PM by studiot 1 Link to comment Share on other sites More sharing options...
Imagine Everything Posted Sunday at 06:32 PM Author Share Posted Sunday at 06:32 PM (edited) Thanks Studiot Thats really ϹΘΘɭ Did not know about this, thank you very much! Edited Sunday at 06:38 PM by Imagine Everything Link to comment Share on other sites More sharing options...
Mordred Posted Monday at 02:05 AM Share Posted Monday at 02:05 AM (edited) Khan University Simple harmonic motion pendulum case. https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/harmonic-motion/v/pendulum lectures from Unit 8 Oscillations and mechanical waves main page https://www.khanacademy.org/science/physics/mechanical-waves-and-sound Feymann lectures are also useful https://www.feynmanlectures.caltech.edu/ tons of study material just click on the links to turce e volume and get the volume table of contents then click the section of interest. example https://www.feynmanlectures.caltech.edu/I_09.html for momentum and force this open source textbook on basic physics also contains numerous hyperlinks to various video lectures so should prove useful https://d3bxy9euw4e147.cloudfront.net/oscms-prodcms/media/documents/Physics-WEB_Sab7RrQ.pdf you will notice it will contain links to khan university for support lectures example Newtons first law of motion https://www.khanacademy.org/embed_video?v=5-ZFOhHQS68 current discussion is covered in chapters 1 to 5 Edited Monday at 02:14 AM by Mordred Link to comment Share on other sites More sharing options...
Imagine Everything Posted Monday at 06:03 PM Author Share Posted Monday at 06:03 PM (edited) Thanks Mordred, appreciate the time it took, very kind of you. I had yet another imaginative thought moment last night but man who knows..maybe I can find out as I move along with more learning, however here it is in all its shameless glory lol https://www.livescience.com/space/cosmology/james-webb-telescope-confirms-there-is-something-seriously-wrong-with-our-understanding-of-the-universe So I saw a video about different rates of expansion and byt looking around found that the name for this is Hubbles Tension. The imaginative thought was this... Could the rates of expansion be measured by their content? What I mean is, if this 'thingy' I'm talking about is simply created & forced into this 3rd state space before it dies thus creating a small non attractive movement by pushing whatever was in that space before it was created, outwards in all directions, could it be the reason there might be different rates of expansion? And even if it isn't my weird and wonderful thought, doesn't DM have to made of something that keeps being created somehow for expansion to take place at all? So my thought last night was wondering if somehow more DM was being created in certain parts of the universe than it was in others. Could it be that whatever creates this DM, maybe creates more forced pushing and then in turn creates a faster expansion due to more DM being created? And also the slower rate of expansion would follow this if the above is true? The less DM being created means less forced pushing and therefore less expansion or slower expansion? And perhaps this can only happen on a cosmic scale due to the nature of quantum or perhaps sub quantum size. Wouldn't DM itself have to have started life as a seriously seriously tiny minisculey miniscule % of an energy type?' something' (I have no idea what its called or could be called, perhaps its similar to a wimp) Anyway, finally I get to the nitty gritty , sorry had to say that first bit first to get to this... So could it be that maybe certain types of galaxies and all their wonders withing perhaps even BH, quasars and certain types of stella nurseries, Neutron stars, Nebulae in one part of space contribute to a more greater volume of DM being created? Possibly even more or even more of a certain type of things and less of another, whatever it is that creates DM to start with? And also the same for the slower rate, perhaps there aren't enough stella nurseries or galaxies or BH's or whatever to create the same amount of DM and is slower because of it. I'm sure there is a lot more out in the universe but you get the idea hopefully. Even though no one knows what DM is or how it's made yet, could that idea make sense?. Or does DM simply stretch across the universe in which case I guess what I just wrote doesn't apply really. I might also just be talking right out of my huh hmm, Off to learn some more now , thanks again for the links Mordred I'll look at as much as I can this week and try not to post too much inbetween, it always seems to take me further into the ordered chaos/chaotic order that seems to be science I'm reposting these here for my own benefit otherwise I keep having to hop back and forth between pages in this thread. Another khan University lesson I would like you to watch is constructive and destructive interference. https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/standing-waves/v/constructive-and-destructive-interference#:~:text=Constructive interference happens when two,they cancel each other out. This will help to understand Elastic vs inelastic scatterings when two particles meet. https://en.wikipedia.org/wiki/Elastic_scattering https://en.wikipedia.org/wiki/Inelastic_scattering the first link will also help understand wave resonance. https://juddy.com.au/wp-content/uploads/2017/07/Notes-4.1.3.pdf HINT the mechanical elastic PE terms above apply ie a crystal resonating with a frequency those resonations of the atoms will follow the same equations of motion (sound waves are mechanical energy) take k for spring constant now replace with binding energy via the coupling constant of a field. In those Feymann integrals "g" for the EM field g is the fine structure constant https://en.wikipedia.org/wiki/Fine-structure_constant An ty Studiot for making the Newtons cradle more defined to me, I always thought it was a perfect line of energy that went back and forth, didn't know it could act differently at each end Edited Monday at 06:05 PM by Imagine Everything Link to comment Share on other sites More sharing options...
Mordred Posted Monday at 06:13 PM Share Posted Monday at 06:13 PM (edited) Don't be concerned with Hubble tension, I've been following the Research but the gist of the problem isn't a need for new physics. Its a problem more in terms of fine tuning of luminosity to distance relations. Holicow used near field measurements while Planck is far field ie CMB. Both require fine tuning but more so with the Holicow dataset for using standard candles. We will get into the FLRW metric later on (its a good stepping stone to cosmology and GR) This is one of the more recent papers on the Tension https://arxiv.org/abs/2408.06153 On Leavitt Law calibrations https://arxiv.org/pdf/2205.06280 this stuff is too advanced for you but suffice it to say its being researched Edited Monday at 06:29 PM by Mordred Link to comment Share on other sites More sharing options...
Imagine Everything Posted Monday at 06:40 PM Author Share Posted Monday at 06:40 PM (edited) It wasn't so much I was thinking about the hubble tension, more that I stumbled across it and in my head it kind of slightly crossed it into my 'idea' about a 'particle?' in this 3rd state I see/envision and the way it might work if it does. And thanks, I understood the below sentance and wouldn't have done without yours and Studiots help. Its a problem more in terms of fine tuning of luminosity to distance relations I don't mean all the things behind that sentance but more the terms you used. Perhaps one day there will be a telescope powerfull enough to be able to see even further and more definitively. 44 minutes ago, Mordred said: This is one of the more recent papers on the Tension https://arxiv.org/abs/2408.06153 On Leavitt Law calibrations https://arxiv.org/pdf/2205.06280 this stuff is too advanced for you but suffice it to say its being researched Way way too advanced but sort of interesting. That in itself led me to wanting to ask a few questions but I won't. I've seen images of our sun next to even bigger and bigger stars, red giants and blue giants, totally amazing to think just how small our sun is compared to them and then how small our earth is to our sun and then how small we are as humans to our planet and seemingly no matter how big something is, it all seems to have started at a very tiny point somehow. I there's an asian saying/philosophy I heard once 'Every long journey starts with one small step'. I need to go watch these lectures now so I will head off to Khan academy, thanks Mordred. Edited Monday at 06:41 PM by Imagine Everything Link to comment Share on other sites More sharing options...
Imagine Everything Posted Monday at 08:29 PM Author Share Posted Monday at 08:29 PM (edited) 2 hours ago, Imagine Everything said: https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/standing-waves/v/constructive-and-destructive-interference#:~:text=Constructive interference happens when two,they cancel each other out. This was very interesting, I'll leave it there for now but already I'm starting to see or wonder how this fits into my original post. Is a mediator a wave length? Edited Monday at 08:31 PM by Imagine Everything Link to comment Share on other sites More sharing options...
Mordred Posted Monday at 09:50 PM Share Posted Monday at 09:50 PM (edited) A mediator is an offshell boson or field of bosons for EM field its virtual as opposed to real photons. For strong force it's gluons, for Higgs its Higgs boson for the weak force is W+ W- and Z bosons. https://en.m.wikipedia.org/wiki/Force_carrier Edited Monday at 09:51 PM by Mordred Link to comment Share on other sites More sharing options...
Imagine Everything Posted Tuesday at 06:45 PM Author Share Posted Tuesday at 06:45 PM 20 hours ago, Mordred said: A mediator is an offshell boson or field of bosons for EM field its virtual as opposed to real photons. For strong force it's gluons, for Higgs its Higgs boson for the weak force is W+ W- and Z bosons. https://en.m.wikipedia.org/wiki/Force_carrier Thanks Mordred Link to comment Share on other sites More sharing options...
Imagine Everything Posted Tuesday at 08:20 PM Author Share Posted Tuesday at 08:20 PM On 11/11/2024 at 6:03 PM, Imagine Everything said: https://en.wikipedia.org/wiki/Elastic_scattering https://en.wikipedia.org/wiki/Inelastic_scattering What is an Incident Neutron or Incident Photon, what this Incident description referring to, sorry Mordred I got a little lost trying to understand it. Would Newtons cradle be described as Inelastic? https://juddy.com.au/wp-content/uploads/2017/07/Notes-4.1.3.pdf This made a lot more sense to me after watching the sound wave Khan Academy lectures. Thanks for those Khan links Modred, I seem to be able to understand a lot more and retain the information better from watching them. My head likes to see things in images, though I think I'm good with english, it's much easier for me to see these things in action as images/animations with their definitions & explanations I extracted the below sentence because it sounds quite like what I see in my idea (I don't know for sure yet) but one of my thoughts that I posted not so long ago was the connection between people among other things and how we seem to be able to pick up whether we instantly like them or not. As in we all have our very own personal resonant frequency and like certain types of atoms, we are attracted or repelled by other peoples resonant frequencies. In simple terms, a resonant frequency is “a natural frequency of vibration determined by the physical parameters of the vibrating object” Anyway, I digress a little, just wanted to say thanks again. And ask those 2 questions. Link to comment Share on other sites More sharing options...
studiot Posted Tuesday at 11:32 PM Share Posted Tuesday at 11:32 PM 3 hours ago, Imagine Everything said: What is an Incident Neutron or Incident Photon, what this Incident description referring to, sorry Mordred I got a little lost trying to understand it. Incident means incoming as in artillery shells aimed at you by the enemy. 3 hours ago, Imagine Everything said: In simple terms, a resonant frequency is “a natural frequency of vibration determined by the physical parameters of the vibrating object” Although this is not wrong, it is not the whole truth. A vibrating object posseses energy by virtue of vibration, regardless of any other energy it may also possess. In order to vibrate the object must accept energy from somewhere. That energy can be delivered in two ways. Firstly By a single impulse such as plucking a guitar string once. If this happens the body will respond by vibrating at its natural resonant frequency. Secondly By a continuous input of energy at the resonant frequency or by series of pulses timesd to arrive (be incident) at the resonant frequency. I tried to describe this in my previous two examples. 3 hours ago, Imagine Everything said: As in we all have our very own personal resonant frequency and like certain types of atoms, we are attracted or repelled by other peoples resonant frequencies. This is something quite different. It is actually called 'phase locking' or 'pulling of an oscillator' in electrical circuits. A biological examole would be the synchronisation of periods within groups of women living closely together. Link to comment Share on other sites More sharing options...
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