Physics

Hey Guys, so thanks to a great math teacher at my school, I know what i want to do with my life: I want to become a Physicist. He has gotten me madly in love with science and especially physics. And since summer is starting in a week for me, i'd like to do some 'physics stuff' I was originally going to buy a microscope of 1000x but i decided that since i am much more interested in physics, i would love to do some activity related to physics. If possible i would have tried to make a particle accelerator, but that's a dream, since i neither have the funds nor the genius mind of Michio Kaku. My greatest interest has been in theoretical physics specifically related to astroph…

Will ice made by D2O would float on H2O liquid. Why , why not

Does anyone knnow the answer to my topic title? thanks in advance Wouter g

Can someone elaborate about how and what a magnetic field line exists that is found in the empty space that surrounds a planet? I'm not talking about the ionized particles that flow along these magnetic field lines but rather the lines themselves. For example, for Earth, is the magnetic iron core somehow emitting electromagnetic photons from one pole which traverse to the other pole? Do magnetic field lines somehow influence the spacetime surrounding a planet such as Earth?

It seems that on a micro level most of what there is is empty space.** Again on the cosmic level we have space between bodies such as ,for example galaxies or solar systems. Is there any qualitative difference between these two kinds of spaces or is the "difference" merely explained by the relative size and location of these spaces? ** it is said that an atom is almost entirely "empty space" ,as an example.

The word I am looking for describes something like a void of light or a black hole. The only word I can come up with is Entropy, which doesn't seem to be it. Does anyone know of a similar sounding word I might be thinking of?

Hello, I have a bachelor degree in Electrical Engineering, and currently doing my masters in Computational Electromagnetics. I came to realize that my interest tends to be more on physics (or research career) rather than an engineering career. Are there possibilities to move from Engineering to applied physics when starting a PhD, or does that transition need to be made at masters level? Since in engineering, we tend to concentrate only on classical electromagnetics, I was wondering if it is possible to move to research on applications of quantum electrodynamics from an engineering background? Thank you very much. Regards

The Figure shows two insulated metal electrodes kept in pure water with a small gap between them. When sufficiently large Voltage pulses applied between electrodes, there is a flow of displacement current through the insulators and water, but will this split the water molecules? All your answers are welcomed !

When amplifying a sound wave, what does the current actually do to the wave to make it louder? As in, how do the electrons of the current actually interact with the audio wave mechanistically?

Ok I have a question, If you have 2 quantum entangled particles at a distance N away from each other and at each location you have 2 different measurement systems. One is named Alice and the other Bob. If Alice measures one of these 2 quantum entangled particles, causing a wave function collapse, will Bob measure that the particle has collapsed on an defined state or will he just see observe nothing but a random state.

first of all , once again i am sorry for posting this big picture .. please dont consider it as spam ... ??

So if you only ever reply to one of my threads, please make it this one! While some of these questions are more biology-oriented, the majority are about electromagnetism and thermodynamics; totally fine with this getting moved somewhere more suitable. I write fantasy, what with magic, dragon, spirits, and all, but I like at least the foundations of those things to be in the known physics of our world. Science is by no means my roof though. I'll probably fudge a lot of the math to make the story work; this isn't about whether magic or psychic abilities are real, it's just brainstorming about how they might work if they were possible. Any help would be appreciated! Ener…

Could quantum electrodynamics theory be wrong ? Everything about this theory does not fit into shape in my mind. I am no expert on the subject, but maybe a better theory for explaining electromagnetism needs to found. Or is it so well founded and proven ? For example virtual particles and them being only "in the math". I even read they can go back in time, this seems ridiculous. Also being able to attract particles by sending or "shooting" particles seems very odd to me, seems to defy logic. This also being just "in the math". Another thing is how photons themselves are the quanta of electromagnetic energy. Electromagnetism works very simply and elegantly, it is odd tha…

Hello, relatively quick question, could go under physics, math, or computer science but I put it here. I was just wondering if it is possible to create a Finite Difference Time Domain numerical simulation for sound waves similar to how it is possible to do it for electromagnetic waves. Has anyone ever done this before? I've looked around but cant seem to find anything. Does anyone know of any good sources to learn more about this if it has been done? Like papers, or books on acoustic design or something.

How does the sending of particles by particles attract other particles ? For example electrons sending photons or virtual photons to a proton, or quarks sending gluons to each other.

How can we detect photons without mass ? In the experiment that was showing two photons hitting the detector when only 1 was fired through the slit, how did technology detect photons without mass to hit the detector ?

Carriers of forces are generally called virtual particles, a very confusing term. I think this term should be abandoned, in favor of the term "carriers of the force" or .. something better. These are not particles at all, but are quanta of the force in question. Basically forces break up into quanta, just like electromagnetic energy, they are also a type of energy. The term "virtual photons" is even more confusing, leading you to think these are some kind of photon, when it isn't. It should be clear that not everything is a particle, and so also their names should be in accordance. Even the photon isn't a particle, but a quanta of electromagnetic energy. Maybe a new term …

Can anyone tell me how to solve the coupled differential density matrix equation for saturation absorption spectroscopy using Runge-Kutta method.

Can someone please explain to me why an infinite regress of causes is impossible? Is it because according to quantum mechanics things at the subatomic world do not have causes? So is determinism (determinism is the idea that everything must have a cause) actually false according to quantum mechanics?

ok.ajb , this is our praying time (friday is faithful day for us) and because of this I have to go to mosque just now, if it is convenient I will prepare and post them there ... thanks for your politeness. (--->> dear ajb I would express something about your personality : I see you trying very quickly to make answer for others.actually I appreciate this direction, and I think this showes that you are more and more energetic in comparison with others , especially according to age. don't miss this , this is very good.) :-) regards. **** * **** preparation before giving physical questions **** * **** ATTENTION PLEASE: THE PROJECT IS …

How much force would be required the moon? Or how would I calculate this? Mind that the force would be delivered by a fist or a similarly shaped object.

Hello lovelies. I write to you today to ask you all a question, I am attempting to assemble my own homemade Fusion reactor, just finalizing everything I need and then I will start the equipment assembly process. My question for you today involves the vacuum chamber. I have located a good looking chamber online and need to know if it looks and is fine to use for this project. Obviously it will be see through so I am able to see the process. Go easy on me, this is my first time and acquisition of parts may take sometime, any advice is appreciated. This is just one Vacuum chamber I have located but the price is quite steep, if I can find a cheaper one that is well suited I …

I know that CERN has discovered the Higgs boson and they explained how it affect matter (the Higgs field is universal and there are a lot of these particles bumping into matter giving them mass) they explained that but what they haven't explained or discover is the anti-higgs boson and how it works. So far my understanding of the universe of particle is if their is positive side their always has to be negative side. As always thank you for taking part.

I usually don't frequent physics, being a chemistry student in college, as I have never been a fan of it, but I do have a rather unusual question to ask. Could we represent the expansion of the universe after the Big Bang with a graphing function, such as x=y10? With expansion being represented by the distance between the upper and lower arms of the function? I'm asking this question because I've been thinking (A dangerous pastime for me) that since time is essentially the non-co-occurrence for lack of a better word, of two events, could we not represent our current position on the universal timeline with line such as y=0? With the rate of expansion slowly diminishing ove…

So light takes time to travel. But think about the absence of light or a black hole taking in the light and space around them, how long could it take to notice the gap it would leave, Could it be instant? Or would it take longer. It should be longer because the light is being pulled in. The fact, however, that the absence of light should be instantly perceptible due to the idea that the light isn't traveling anymore but being sucked back in the direction of the black hole against time, and space. The "dark hole" we see is happening there and now?; while the light we see happened years, to billions of years, ago. Would the hole be a 3dimensional(|+/-|?) object only imperce…