Physics

Hi. On the right side transformer, the lines of flux by the 'E' of the word CORE, repel themselves as split. Does this repulsion at that point 'E' shows in any different (form of magnetostriction?) , or affects anything ? -Image borrowed from the web-

is dark matter nothing more than a wildcard thrown in to a mathematical equation to make the equation work? what evidence do we have for it other than that? will we ever be able to see it? what do you ( or scientists) think it is exacly?

Please see the attached "concept" pdf file. If the mechanism does not generate energy then there should be physics which can clearly show that without it being assumed in the method of analysis used. Included in the analysis should be clearly shown details of a torque opposing the rod's rotation since the absence of such a torque would mean that the mechanism continues to operate indefinitely and in doing so continues to power the motion of m2 indefinitely. If it does produce energy then energy is not conserved. More could be said about this interesting mechanism e.g. acceleration of m1 in the x direction without a force being applied to it in that direction, the for…

I wonder if the movement of time in that it's constant is dependent upon the universe expanding?

I was in a car accident in 2018. I was heading south-bound on a highway; it was a 5 lane road. The three lanes on the right were free-flowing traffic, while the left two lanes were bumper-to-bumper, stopped traffic. I was traveling in the 3rd from the left lane (in one of the free-flowing lanes) and the at-fault driver was in the 2nd from left lane (in a stopped lane of traffic). I was decreasing speed, as I could see brake lights ahead of me. I estimate my speed at the time of impact to be between 25-35 MPH. I'm not sure of the speed of the at-fault driver, but she was stopped in her lane and then pulled into my lane without looking. I was essentially side-swipped/s…

Someone asked a question the other day that made me realise that there seems to be a parallel between the Heisenberg uncertainty principle (HUP) and Noether's theorem. For example, one conjugate pair of variables in the HUP is energy and time. While in Noether's theorem, the conservation of energy is related to time symmetry. Another conjugate pair is momentum and position. And the conservation of momentum is related to spatial translation symmetry. I assume this is not just a coincidence. So is there a deeper reason? Is Noether's theorem the reason why these are conjugate pairs?

Does speed is directly proportional to transparency? So why we can't see a moving flap of ceiling fans!

Hello. I'd like to know if there is a way to make a certain image appear as if it's coming from a very great distance, preferably using mirrors. Think of it as if you're looking at a movie on a small tablet but it's the size of a big wall and appears to be far away in the horizon. The one way I can think of is to make something like the holographic sights and have the light direction from the image somehow come to the window completely parallel, that way it can appear to come from an infinite distance and trick the eye by creating the illusion of depth, but I don't know if it would work on that big of a scale or create any visual problems. Please let…

I trying to work out the speed of a falling object and hope you can help. Apologies, it may be a bit simple and in the wrong forum, anyhow appreciate your help. If a car drives off a cliff, the cliff is 550 ft in height, the car weights 1,550 kg literally rolls off what would be the speed of the vehicle at the impact opposite to driving the vehicle 110mph off the cliff. How would I calculate the speed at impact. I would understand the lateral speed would drop off proportional to the height.

Someone asked a question the other day that made me realise that there seems to be a parallel between the Heisenberg uncertainty principle (HUP) and Noether's theorem. For example, one conjugate pair of variables in the HUP is energy and time. While in Noether's theorem, the conservation of energy is related to time symmetry. Another conjugate pair is momentum and position. And the conservation of momentum is related to spatial translation symmetry. I assume this is not just a coincidence. So is there a deeper reason? Is Noether's theorem the reason why these are conjugate pairs?

Im imagining a sort of time machine consisting of a hypothetical box made of antimatter, or coated inside in antimatter. Now imagine passing light inside the box. Would it still obey the constant 'c'? If not, then maybe that's the answer to creating a time machine. Because any particle introduced into such a box would undergo space time dilation. Now, CERN has plenty of that antimatter stuff, so I've heard....

im not a scientist, but i came here because there is a question bugging me. here goes... the universe is approx 13.8 billion years old, it has been expanding since its beginnings, so it was much smaller at one time than it is now. and we can see galaxys which are over 13 billion light years away, therefore what we see when we look at them is how they looked when the universe was very young and therefore a lot smaller than it is now. . but here are my questions if the further out we look, we are looking at a smaller and smaller universe, then why don't these galaxies appear bigger and bigger the farther away they are? or why dont they appear closer…

We have coal, oil, gas, nuclear, and thermal!solar power plants that work by burning these boiling water, and turning turbines. We have wind and hydroelectric power plants that use their respective fluids to turn turbines directly. And yet, when people want to work out, they get on devices that USE electricity to run a motor. Something isn't right here. Is there any way to design a treadmill and/or stationary bicycle that can generate electricity from the user's motion?

To start, 'microwave' is not a verb, but less bad than 'nuke'. And irradiate sounds weird. To the point, the 'five minutes' <but your microwave power can vary, so adjust the time accordingly> Should it properly be instead of a timer, a Joules counter/setting dial ? Or Kilowatts-minute ? Could it lead to better recipes instead of the imprecise legacy? A tree that grew crooked, crooked stays. No 'irradiate 200 Joules' setting to your yesterday pizza?

So, I was curious to how it worked(after trying to get past the crackpottish "antigravity" videos) and it stated that it worked by ionizing the air, which caused lift in the craft because of the aluminum build(if that is correct). So, basically it pushes the air downward creating a lift upwards(correct me on this if this is incorrect). The problem is doing this in space because vacuums do not contain the gases that are on Earth. However, I was thinking why can't we expel a gas in the area of the lifter in a vacuum in order to create this lift. In space, some gas could be expelled to the ionocraft-like engine in order to create a push between the gas and the ionocraft.…

I don't know how to best ask this boring question... A moving observer observes a charged particle. We could use field-transformation equations to compute the field that the moving observer will see [various sources say that the electric field will look somewhat oblate and there will be a magnetic field around the particle]. But what if the moving observer simply uses Maxwell equations to compute the field of the particle (the particle is moving in his frame of reference) - will he again obtain equally oblate electric field and the magnetic field?

Is it possible based on physical standards?

Hello , I am trying to design a rocket . But to know it works , I need some simulation software . Where can I find it?

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In his chapter 26, volume 2 ( http://www.feynmanlectures.caltech.edu/II_26.html ), Feynman produces an equation that, I guess, shows the x-component of the electric field of a moving point charge... equation (26.6). He then says that the electric field of a moving charge is 'oblate': its parallel field being somewhat weaker, while its perpendicular field being somewhat stronger. Fine. In the same chapter, further below, he makes a table of Lorentz transformation of fields (table 26-2): I would expect the two results match, but I don't see how. According to the transformation table, the x-component of the electric field of a moving point charge sho…

Is it for example, possible for a particle to exist in t1 and t2 simultaneously? Or is it possible for a particle A to exist as two particles simultaneously? If that's not possible then explain things like telepathy through scientic means?

If we were theoretically able to carry out nuclear fusion, such as encasing a star in a reactor, how/what would be the type of energy we would be pulling from it to power the grid? I would it would be heat energy like in nuclear fission? I hesitate to believe this because isn't the energy from fusion way too high to use? Would it be akin to powering a 40 watt light bulb with 1,000 watt power source? ~ee

The rifling grooves impart the torque that makes the spin for better trajectory of a bullet. Would the same be convenient to have for a projectile in outer space; -no air, no gravity- ? What if the projectile is spherical ?

When mass and velocity proceed along an arrow of time, they undergo certain deviations collectively that would render, exclusively, their forward momentum alone coherent to the human conscious. Why is it therefore that entropy and energy play so wide a role in the speed of light, which surely is the ultimate constant in the theory of the coherence of an Arrow of time? This surely means that the light barrier is subject itself to entropy of energy, which must mean that time space curvature depends on energy and the entropy therof.

Does the aircraft has a laser scanning obstacle detection system? I mean I know the aircraft has a way of checking the turbulence, but I am not sure how it does it. If there is a video about this please show it to me, thanks.