Experiment Definition and 1000 Threads

I am still puzzled by the issue of existence of electrostatic field. According to the classical electromagnetic theory, electrostatic field can be created by an electrically charged particle. The electrostatic field surrounding the electrically charged particle does not stop close to the...

BBC 4 with the help of a smart app tracks the spread of a theoretical pandemic:

Is anyone did experiment on wave function collapse in double slit experiment. Could you please share information about that, and also share research paper about that experiment. What kind of observation done here, what kind of equipment used for that?

How can the results of a double-slit experiment change just by adding a detector at the point of entrance of the split? Is it really so that if there is a detector, we will only see two lines and if there is no detector we will see interference?

It's come to my attention that if we were to travel in a spaceship at 0.5c directly away from our sun, I would observe that the light from the sun as being red shifted. What I would also observe was that this red shifted electromagnetic wave would in fact travel away from me in the spaceship...

My experiment is to place a detector on one of the slits in the dual slit experiment so That it would record or not the passage of the photon, and then reset the detector to its base state, Erasing the result. In such a case, would the interference pattern be destroyed simply because the...

Can anyone share original paper of Hertz experiment on photoelectric effect.

Many times, the charge carrier density of a material is determined from a Hall effect experiment, from ##R_H=1/(ne)## (SI units). Where ##R_H## is determined from a measured voltage and other controllable parameters. As far as I know, this simple formula comes from the obsolete Drude's model...

<< Multiple threads on the same subject merged, Thread moved to the schoolwork forums, and the OP has been reminded to show more effort on their own schoolwork questions >> I want an investigation/research that is simple to experiment practically (I don't have fancy equipment. My main piece of...

Suppose I could restrict an electron to a very small space byfor example using multiple magnetic fields, then could I not be sure with 100% probability that the electron was there before and after a measurement? Wouldn’t such a experimental set up dis prove the idea that the electron had freedom...

I’m thinking about modifying some force related equations to include dark energy in them for an essay on physics. My reasoning is that if it can separate galaxies the objects in our day to day lives must also have a small tendency to move apart. To do so, I have to dispose of an already done...

Why is it so difficult to detect interference patterns with larger objects in the double slit experiment(e.g. bacteria)?

It has been mostly substantiated by virtue of experiments such as wheelers delayed choice quantum eraser experiment that we are able to retroactively impact past events of particles. However could this apply to the universe. When physicists are carrying out experiments today, which are creating...

Homework Statement I'm not sure if this is a forum for these kinds of things. But anyways, at school I and a handful of other kids are devising an experiment to send up to ISS to test it over a period of 30 days next year. (Yep, we're quite fortunate to have this opportunity!) We've chosen to...

Hi, Will there be interference if I point the laser thru one of the openings of the double slit aperture only while the other one is open? And is the interference more pronounced or the same if I shine it thru both the apertures at the same time.

Hello everyone, this is my first post on this forum, I am a new member and the other day was pondering on a question related to the passage of time. So, I have the following thought experiment: Suppose there is the following setup: We have two small toy cars, identical, each capable of...

Hi I was wondering what would happen if you use Gamma Rays in a double slit experiment. Would you see the same interference pattern?

I would like to measure time period of very short periods of electricity flow in the range of micro seconds or even smaller;can someone tell me me a device that can help me do this?

This thought experiment has been bugging me for a very long time - I'm hoping someone can help me understand it. Premise: - Simple DC electrical circuit consisting of a battery, wire, light bulb, and another wire to complete the circuit. - Each wire has a length of 1 light-year (yes, very...

Newton's bucket experiment. Why the debate? I just cannot see why there ever is any need of long, long debates about the experiment and people even invoke general relativity. As far as I can see, there is nothing to debate about. We live in this "real" infinite universe of ours and we have far...

Question Has the LHC released any papers or reports on the observed running of any of the three Standard Model coupling constants with energy scale from either Run-1 or Run-2 data (or both data sets)? Last time I looked I couldn't find any data As of January 2014, I had not locate any papers...

For class I conducted a experiment where I made sugar solutions, poured them into a glass prism container and used a laser pointer to find the refractive index. However, while typing in my results I realized I found the angle of deviation instead of the minimum angle of deviation since I didn't...

I was told of a thought experiment by a friend of mine who says that his thought experiment will either prove or disprove randomness in quantum mechanics, and this was in fact verified by several other physicists, who said that if this experiment was ever successfully carried out it would either...

I'm a former physics student and I've been thinking about an interesting problem that eventually led me to the following thought experiment that I'm having trouble resolving. Imagine a two-compartment system, where one compartment is filled with He gas, and the other is filled with standard...

Hi everyone. I'm interested in building a basic nickel-iron battery. I was wondering if both plates can be made off of nickel-iron alloy (35% iron and 65% nickel). How will the efficiency of this model differ compared to if I use iron and nickel plates separately?

Assume you have the following scenario: Light begins traveling through a gel of index of refraction n=1.34 in a straight line along the x axis. It is then incident on a solid sphere(n=1.36) of radius R in 3-space. Upon transmittance, the light again travels through the gel(n=1.36) and finally...

I'm surprised no one has posted about this yet, so I guess I'll take it upon myself to post the link, even though I have no real expertise on the subject. The ACME collaboration had the results of their latest measurement of the electron's EDM published in Nature today. They place an upper...

Homework Statement So in physics we have this lab. Its simple, I'm just bad at physics...so bare with me. The objective of the lab is find the coefficient of friction (on a flat surface not on inclined planes and such not sure if this makes a difference (I should know if it does but I don't and...

I am confused at one point. The coin flipping Bernoulli Process has a probability of p of getting HEADS and a probability of 1-p of getting TAILS. Let's define a random variable x[n], which takes the value +1 when it is a HEADS, and -1 when it is a TAILS. The mean or estimation of x[n] becomes...

Hello everyone, I am planning to build a device to test Beer's law for a specific solution and obtain the molar concentration of the solution. Beer's law presumes that the input and output light intensities are related by an exponential law. I need to know: The sample path length ##\ell##...

Homework Statement Homework Equations Path difference is nλ at maxima, (n+0.5)λ at minima The Attempt at a Solution I think the phase difference between S1 and S2 is not 0 anymore, because the wave effectively takes a longer distance by going through S2. Thus, there is no longer a central...

I know this has been discussed in so many ways on this forum, but it is hard for me to separate interpretations, fact, speculation, and inaccuracies. You can probably just skip the next two paragraphs that I describe the EPR/Aspect experiment and go right to my question. In an EPR experiment...

I'm a high schooler involved in a research in which we aim to grow perovskite crystals in microgravity. I've recently come across this article (https://scitechdaily.com/researchers-develop-a-better-method-for-making-perovskite-solar-cells/) in which they explain how to grow better perovskite...

In the experiment, it is observed that the minimum value of anode current occurs periodically and its period multiplied with e is known as excitation potential energy. I don't see the link between this periodicity and quantisation of energy levels of atom. Could anyone please make this clear?

The spatial orientation of the double slit setup be so that the screen extends in a plane ##x = constant##, while the entire apparatus sits on a ray perpendicular to the screen (of course, the slits sit and extend a bit off this ray). My questions are about the dynamics in x-direction if only a...

The idea of the outcome of an experiment depending on whether or not it is being observed is strange. I have never seen this happening in real live. Still in physics it is held that it does exist: the double slit experiment using very low-energy laser light (assuming that one photon passes the...

i would like to find the detailed calculation in the case of a two slits experiment with an excited atom. i only found the formulas when it decays near the slits. have you links? thanks

Hello. In Milikan's experiment, as we observe the oil droplets through the microscope, during the measurement of the speed of fall and rise. we can see that the oil droplets are "vibrating". Why does it happen? Sorry for my bad English.

Homework Statement In a Franck-Hertz experiment carried out with potassium vapour, it is found that the current falls off rapidly at an applied voltage of 1.62V. Calculate the wavelength of the expected spectral line in the emission spectrum of potassium when this voltage is reached. Homework...

Hi all! I'm a physics enthusiast and I've been reading/watching a lot of stuff about the double slit experiments. I was watching a youtube video about the delayed quantum eraser experiment and it was really interesting and got me thinking. So here's my question. What if the detector is placed...

Bohmian mechanics claims that although it is deterministic, randomness emerges from the fact that we cannot know the initial conditions of the particle due to Heisenberg's uncertainty principle. However this experiment can put that to the test and determine whether randomness in quantum...

Firstly i would like to say that i am not advocating the need for a conscious observer to collapse the wave function but i just want to know whether the methodology behind this experiment would prove or disprove this idea. The experiment would be similar to the quantum eraser experiment except...

I have always been interested in entagled electrons. so I thought about the stern gerlack experiment and simly wondered what would happen to entagled electrons in such an experiment. (although the prefix says high school i am able to appreciate more complicated answers).

I'm not sure if there's a better category to post this in, and I'm just a casual physics enthusiast, but I'm having trouble understanding this: "Consider the famous two-slit experiment. When you watch a particle go through the holes, it behaves like a bullet, passing through one slit or the...

Homework Statement In scattering experiment, find distance of closest approach if a 6 MeV alpha particle is used 2. The attempt at a solution initially KE of alpha particle is 6 x 10^6 x e joules and 0 PE, finally its PE is kq1q2/d, k=9 x 10^9, q1=4e, q2=Ze=79e (assuming gold), d is distance...

Hello, my name is Stephen Lanford and I am currently working on a Physics II lab. I am solving for the thermal conductivity of four materials (glass, plexiglass, pine, and sheetrock) using data from thermal conductivity experiments. The experiments consist of a steam chamber at 100 C, a block...

What is the math behind this experiment? If the mass flow rate of the air coming out of the guy's mouth is M1, then what is the mass flow rate, M2, of of the air going into the bag? I know that this is related to compressible flow. The explanations I have found on the internet are that since...

Hi, I'm reading a paper about combustion and I can't understand the composition of the inlet mixture. Here's what the paper says: "A known flow rate of the isobutene (Matheson, TriGas, 99.5%) in nitrogen (General Air, 99.998%) was introduced into a 6mm ID quartz reactor that was heated in an...

It is said that if one shoots photons in a double slit experiment, and place a detectors around the slits to find which slit the photon went, one will not see the photon interfere. However, to detect a photon, one must absorb it. So how does the photon detectors work by detecting the photons and...

Hello All. This is driving me crazy and nobody can give me a straight answer, if there is one. I was daydreaming in my yard last week and came up with a weird question. Let's say I discovered a hole in my yard. The hole is plenty wide and well-constructed and has a series of rungs I can...