Effects Definition and 963 Threads

So I created an account here just so I could ask this burning question. I keep looking online and through other resources but can't really find any details on this. Apologize if I didn't post on the right forum. So I know gravitational waves are still being studied and as far as I know any...

Homework Statement The example below illustrates the relativistic phenomenon that synchronicity of events is not absolute but it depends on the reference frames. Spaceships A and B, while moving away from each other with a constant speed of v = 0.553c, are watching a competition between...

Hi everyone, first post here. Lurking for a while but it was time to register.. I'm trying to conceptualize an idea in which humans are sent to orbit a very massive object, like a neutron star, a magnetar or even possibly a black hole. I would like the ship to be relatively close to the surface...

When in a pure state, a particle exhibits interference effects in experiments. Wavefunction collapse alters this pure state: if two particles A and B at the opposite sides of a galaxy are entangled, does it mean that interference experiments done using A vary depending upon whether B has been...

Homework Statement Very large air bags are used to lift instruments for high altitude measurements as shown in the image below. At ground level the bag is only partially filled with helium, just buoyant enough to rise. A) As the balloon rises, describe what happens to the magnitude of the...

Hello everyone, I'd like to start off by expressing my appreciation for the existence of this forum to begin with. I majored in Sociology, yet classical and quantum physics has grasped my attention to a whole new level. Basically, I have a very elementary understanding in the subject, which is...

Hi, Hopefully this is the right place for this question. I'm wondering whether a 100lb ball of lead would roll down a ramp (assuming a 35 degree slope) at the same speed as 100lb ball of copper. Would there be a difference in force while they are rolling down? Thanks,

Hi, I joined this forum because I love learning new things about our universe and I often have questions like the one I'm about to ask. Also I would like to state that I haven't taken any physics classes so terms and advanced talk will be beyond me however, because I am so interested in...

Hi, I recently came across the idea that relativity can play a role in the repulsive force of a charge outside of a current-carrying wire. The situation described was when a positive charge (q) moves at the same speed and direction as the drift velocity of the electrons in the wire (assume...

I was first considering to post this in the GR section on the forum, but as I've understood it, compactification is essential in string theory, so I thought that perhaps you guys know the subject better also in Kaluza-Klein theory. Compactification in Kaluza-Klein theory as I understand it is...

If you could create a small space on Earth in which a person could fit that was totally unaffected by gravity, or that was sheltered from the gravitational affects of external sources of gravity, what sort of affect on time dilation would be observed? Both for the person in the pocket, and for...

I was looking for a simple circuit to breadboard that demonstrates how a buffer prevents "loading" effects. I would like to do something like this: 1. Build circuit without buffer where loading effects are observable 2. Add buffer to circuit and observe the elimination of this effect I...

Dear All, How laminated core helps in reduction of the eddy current? How reduction of area is useful in reduction of eddy current? Thanks.

I've been trying to understand the Coriolis effect on the Earth's surface. The general equations produce two terms: The first is R'' and the second is 2ΩxV, where R is the position of the point on the Earth's surface, V is the velocity (relative to Earth) and Ω = ωk. Where ω is the Earth's...

I was looking over my notes today, and I realized that there was a point that isn't pretty clear. If we have the image under T (being T a matrix transformation induced by a matrix A) of the unit square, then its area should be abs(det(A)). Why is this though? I was looking at the proof and I...

I was wondering if an antenna could pick up some sort of signal if it was exposed to a spray of electrons or ions. For instance I have a patch antenna calibrated for 300 MHz. The patch antenna was placed in an environment where it could be getting sprayed by a wave of electrons followed by a...

Not sure if this is a cosmology or standard model question , but here it goes. If the repelling force caused by inflationary cosmology were strong enough (perhaps down the line a few hundred quadrillion years from now or so) to begin to create space in between quarks, will the strong nuclear...

I'm talking about the primitive rheostat with coils and a slide and such , why when we inc. The resistance of rheostat does Vext inc and Vint dec. ?

What effect does water have on electromagnetic waveforms? Does metal attract or reflect EM waveforms (specifically rf)?

Let's say that I graduate in computer engineering and my first job is non-technical & unrelated. How hard would it be to get back into your field if you spend 6 years with your first non-technical job?

Hi all, I have a total of 6 questions, 3 of them are posted here and 3 of them are provided in the link because they involve graphs. 1. KE of an electron is twice that of a proton, what is ratio of de broglie wavelength of proton:electron? My answer: since de broglie wavelength is lamba =...

I have heard people argue that light doesn't experience time or space. That it is everywhere at once. I suppose that they base this on the relativistic idea that time and space are warped by speed, and that the closer an object gets to C, the more time slows down and space contracts relative to...

How do the effects of semiconductor semiconductor doping affect the Hall effect? For instance, consider number 4 and 5 in the following sample: Using the right hand rule, B points downwards, conventional current points to the right (because of the 5V battery), and therefore, the force...

Has anyone studied the effects of the central black holes in the galaxy's, on the rotation of the galaxy's spiral arms. When the black hole spins, do the stars in the surrounding galaxy spin in the same direction, does the speed of the spinning black hole affect the rate of rotation in the outer...

First, let me just say that, while I tend to be knowledgeable on a wide variety of topics, I am absolutely atrocious with details such as names, times, and specific values. A friend of mine has decided that I'm imagining an effect that I have experienced on countless occasions and which I...

Solar winds contain plasma, which are charged particles and carry Sun's magnetic field orientation, when those solar wind hits toward Earth, does anyone have any suggestions on how those plasma affects on Earth's magnetic field? and how this energy converts into different forms on Earth? Does...

I'm pretty sure a proton's location does not have much quantum uncertainty but an up quark does. So qm uncertainty begins around 10^-15m and is full blown at 10^-18m If my numbers are wrong please let me know.

I've had this idea stuck in my head ever since I read up on the Feynman-Wheeler formulation of classical E&M (absorber theory), and I was wondering if anyone here had any comments on it. For those who aren't familiar with it, it is a slight modification of the well-known E&M theory that makes...

The question in the title really says it all... I was wondering, what relies on the Goldbach conjecture being true? What would happen if it was proven correct?

I’ve got a question. Say we have a medium traveling through a pipe at speed v. The soundspeed of the medium is vs. The speed of the wavefronts to an stationary are approximately v-vs and v+vs when both v and vs are much smaller than the lightspeed c. However what happens when v=c? Do the...

Hi, before I question let me say I'm new both to this site and Physics in general, as such please forgive any ignorance on my part. I was given an example of time difference in regards to a 'my twin traveling at near the speed of light' scenario and I'm having trouble reconciling some of the...

Hi Guys, Struggling to find any information on the changes to a cable at altitude compared to at sea level. The initial task was to calculate the resistance of generator wires and then change them from copper to aluminium cables to save weight. I have done this leading me onto describing the...

It is sometimes said that Gödel's incompleteness theorems imply that the existence of a TOE is impossible.But I can't accept this. Gödel's incompleteness theorems don't seem to be as broadly applicable as it is being applied in such discussions! I also have read a book on mathematical logic...

Hello everyone, long time lurker first time poster here. I've been wondering for a while about this: Let's suppose a newborn baby is placed in a spaceship capable of traveling at 0.95c. The baby travels from Earth to a (theoretical) planet 95 light-years away which is at rest relative to...

I've been pretty much subject to a wide range of miseduction and bad parenting...variant degrees of Physical violence since the age of two or so(pretty common since I live in a third world country)...subject to indoctrination and misinformation(concerning evolution or history for exemple which...

I want to know the effect of breathing Anodize and Chemfilm particles. The part I work with is made of aluminum sand casting which gets anodized and chemfilmed after being machined. I have to hand polish the inside of the part with sand paper. So in total i sand about .0015 of the Anodize. I...

So, I was thinking about this the other day. If we watch material approaching near the event horizon of a black hole get scattered all over the place, then would the opposite be seen for an observer falling into a black hole? Instead of us seeing them scattered all over the place, would they see...

This is my 'virgin' attempt at intercourse in this venue, so please be roughly gentle. (I.E.; this is my first post, I'm a bit slow (intellectually) but willing to learn. I tend to be somewhat playful in how I use words. I hope you will forgive me if I step outside the boundaries of...

Hi all, I'm trying to find resources for how to calculate and find what I should expect as the result of the interface between two metals with different work functions. http://en.wikipedia.org/wiki/Anderson's_rule"]Anderson's[/PLAIN] Rule tells us how to do this for two semiconductors and...

Hello, How can I mathematically see how Schumann resonances affects 5-MeO-DMT production in the pineal gland? My goal in this sub area of a project is to figure what frequencies affect Melatonin/5-MeO-DMT production. (I have not studied much in chemistry but I'm working on a personal...

A small solid sphere of mass M0, of radius R0, and of uniform density ρ0 is placed in a large bowl containing water. It floats and the level of the water in the dish is L. Given the information below, determine the possible effects on the water level L, (R-Rises, F-Falls, U-Unchanged), when that...

For example - When an electron is excited from an inner shell to an outer shell in an atom, it does the quantum jump between the states. Pretty much it disappears from inner state and appears in outer state. Isn't this happening at faster than light? (The velocity is actually infinity for...

Greetings. I want to experiment with the effects of macroscopic ionized solids. But first, let's have a little 'thought experiment'! If I have say, a gram of elemental copper, surrounded by ultra-pure water and it's put into a device which is capable of filling all of the valence...

Hi, I'm an intern in an energy research company and I'm asking if anyone has any links or channels to papers or studies conducted on the effects of barnacle growth or other causes of surface roughness on tidal turbines? I apologize in advance if I have posted under the wrong part of physics...

The figure below shows a section of the human forearm in equilibrium. The weight of the object in the hand is 60 N. The centre of gravity of this object is 32 cm from the elbow. The bicep provides an upward force of magnitude F. The distance between the line of action of this force...

Trying to find the relationship between voltage and power across a resistive something. Using a lightbulb if the bulb was rated at 100W when 140 Volts is used, what would happen to the power if the voltage was doubled? (assuming the light bulb doesn't explode)

Trying to understand what happens upon impact to the metal of a car that is stopped (Vehicle 1)when another car's driver's side rear (Vehicle 2) impacts the stationary car . Vehicle 2 is a heavier, larger car and is moving in reverse at approximately 10-15 MPH. The impact site on Vehicle 1 is...

How does the diameter change from one manometer say of radius x cm to say 2x or 3x cm change the height difference if the liquid in the manometer is of constant mass, density and gravitational field strength remains the same? P.S could some working also be shown just to get a mathematical...

I forget where I read it but one author said that mountains of ink have been spilled debating why quantum effects disappear at the quantum level. I don't understand why this is a problem, I think the answer is rather obvious. One poster on another thread wrote: "Technically - classical physics...

How does decreasing the volume increase the temperature of the gases? I was doing an experiment today and when i decreased the volume of the gas from 65ml at 1atm to 20ml the temperature detected an increase of 0.5°C. However, in Boyle's Law temperature is a constant. So would this mean...