# Questions tagged [experimental-physics]

for questions about design, process, data, or analysis of experiments and observations.

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### Error Calculation

For example a = b +/-c, c is the uncertainity of the measurement d = e +/-f, f is the uncertainity of that measurement A = a/d Then how can I calculate the error of A ?
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### Quantum Entanglement Test [closed]

An excited physic student runs into his professor’s office and says, “Hurry, come look. I have just entangled two beams of laser light.” The professor stops what she is doing and goes to the lab to ...
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### Can a UVC light passes through PTFE (Teflon) tubing for decontamination of fluid? [closed]

How good is it to use for decontamination purpose?
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### What is the remaining values of $\tan{\beta}$ of MSSM, not excluded by experimental searches?

What is the remaining values of $\tan{\beta}$ of MSSM, not excluded by experimental searches ?
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### Accurate Gravitational Constant and mass of earth [closed]

The question is: How do you calculate the gravitational constant and the mass of earth accurately? Explanation: Cavendish's experiment calculated the mass of earth relative to a reference mass. If ...
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### Where in experiment do you encounter Lorentizan wavefunction?

Is there an experimental system, or such that can be observed in nature where a particle's wave function assumes a form - $\psi(x)\propto \frac{1}{\sqrt{x^2+1}}$ such that $|\psi(x)|^2$ is Lorentzian? ...
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### Lightspeed - what do we measure? Wave group, phase, front and signal velocities

I'm studying for an experiment of measuring the lightspeed c. It will be measured following the rotating mirrors method by Fizeau-Foucault, using a HeNe laser. I could understand - and visualize - ...
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### Net Force and Motion with an Atwood machine. Formulate a hypothesis about the relationship between the net force on an object and its motion [closed]

Testing Experiment: Net Force and Motion with an Atwood machine Hypothesis: Formulate a hypothesis about the relationship between the net force on an object and its motion. Think about how this ...
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### What physics experiments can I do at home? [closed]

during this pandemic I had couple of physics experiment to do for my homework. They included beer foam decay, ball inertia experiment and so on. Now I have a final homework where I alone need to come ...
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### Statistical tension between two measurements [duplicate]

If we have two measurements of the same quantity, say, $m_1=a\pm c$ and $m_2=b\pm d$, how many sigma away are these values? In other words, when we say that two measurements are in e.g. $3$ sigma ...
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### What was Faraday's experiment's of induction?

I'm searching about the experiments, which Faraday has done in order to discover the electromagnetic induction phenomenon. I didn't find what I need on google scholar nor google books. Can you ...
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### Natural and man-made nuclear transitions [duplicate]

I am currently studying nuclear physics, but in this concept, I could not find any related topic for this on the internet. Can someone suggest any references?
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### Relationship between resonance frequency of a cup and amount of water filled

For a science project I chose to investigate the relationship between the resonance frequency of cups and the amount of water filled in it. I filled the cup with 10 grams of water each time, and used ...
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### Is this $CL$ or $CL_S$ method?

I have already posted this problem here, closed for asking too many questions. I will reproduce the introduction and contextualization here, and try to ask a more specific one that I hope will be ...
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### Physical Intuition of Inelastic Mean Free Path

The inelastic mean free path (IMFP) is a quasi-universal curve which describes how far a beam of electrons will travel through a material before scattering inelastically. I have been searching for ...
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### What is the charge stored by the capacitor?

I learnt that for an uncharged capacitor of capacitance $C$ connected with battery voltage $V$, the energy stored by capacitor is equal to $\frac{1}{2}CV^2$. But in this example for the capacitor ...
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### Electromagnetic Induction experiment with solenoid

The experiment is as follows A solenoid is connected to a galvanometer and a magnetised iron rod is passed through it. (the apparatus is not ideal, and there is no zero error in the galvanometer) I ...
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### How do you measure the parity of a particle?

When one looks up elementary particles on Wikipedia, as one of their properties their parity is stated. For example the Proton has parity $+1$, while a Pion has parity $-1$. I understand that you have ...
28 views

### How is the counting-rate of particles obtained in an experiment?

When reading Light Sterile Neutrinos: A White Paper I came around the following statement: "A further difficulty in interpreting experimental evidence in support of a light sterile neutrino is that ...
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### A game of boxes with rotating gears

Setup: Suppose you have 3 (identical looking) boxes named A,B,C [furthermore they have identical mass]. You are told the following about the boxes: One of the boxes actually is a uniform mass. We ...
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### Air track acceleration experiment

What can be a major error when we are calculating the acceleration of a matter, using the air track? As shown in the picture, the goal is to measure the acceleration of the matter(M). I will hang the ...
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### Are there any experiments going related to gravitational shielding? [duplicate]

Is it possible somehow to achieve gravitational shielding? Are there any experiments presently going on or future projects?
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### I need help devising a classroom experiment to detect the magnetic field generated by a current in a wire

I want to devise a simple procedure that can be followed by students to discover that a current in a wire produces a magnetic field near that wire. I am of course restricted to very simple materials, ...
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### Paper with sequential Stern-Gerlach experiments

Often sequential Stern-Gerlach experiments are taken to motivate basic quantum mechanics. But I can't find a paper where these are actually carried out experimentally. I have two questions: Who was ...
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### Interpretation of the output of a spectrometer: wavelength to energy conversion

First question This question may be uber-trivial, but I have a spectrometer that provides as output the number of ADC counts at given wavelengths (the wavelength vector is not equally spaced), i.e., ...
32 views

### Creating a temporary magnet using a simple method

Was just wondering if someone could clarify this situation: When I take a Allen wrench and let it come in contact with an iron nail nothing happens. Not really surprising. None of the objects are ...
39 views

### Crossover filter gives weird results

I was analyzing results of an experiment on a crossover filter and I was trying to take into consideration the parasitic resistance of the inductor L (called $R_L$). I know the theoretical crossover ...