Detection Definition and 339 Threads

So in my lab, I am working with fluorescent bacteria, specifically GFPa1 (green fluorescent protein a1) which are excited with around 500nm light and emit around 516 nm. Forgive me if these aren't correct, it isn't essential for this write-up and my notes aren't in front of me. Is there any way...

hi all, i have done research and know the basic ones but could you guys please list all the methods of particle detection (especialy ones that detect neutrinos) that you know of I am learning particle physics and this would really help me.

please help i have to write a MATLAB code for DETECTION OF THE LOCATION AND SIZE OF A CRACK IN STEPPED CANTILEVER BEAMS BASED ON MEASUREMENTS OF NATURAL FREQUENCIES the reference paper is DETECTION OF THE LOCATION AND SIZE OF A CRACK IN STEPPED CANTILEVER BEAMS BASED ON MEASUREMENTS OF...

Hi all, I have data similar to the following where the x-axis is time and the y-axis is magnetic field. At around t = 20 (and t = -80) there is a systematic error (probably due to some other current switching on and then switching off) which I want to get rid of in my data. Can anyone...

Hi, I am trying to figure out if a group of similar objects "A's" can be distinguished from different group of similar objects "B's" without using any means of visual analysis, be it a laser scanning or measurement of dimensions. I want to know if one could analyze or map the magnetic...

From relativity, if a rocket moves close to c, then its mass increases along with everything inside the rocket. Now what if there was a scale inside the rocket? Would the scale read a higher value? I assume the scale should stay the same because if it didn't, then you can do an experiment...

Author: Glenn F. Knoll Title: Radiation Detection and Measurement Amazon Link: https://www.amazon.com/dp/0470131489/?tag=pfamazon01-20 Prerequisities: Sophomore (2nd year uni) level courses in modern physics and EM, mathematics through differential equations, Level: Undergraduate...

If you look on the attached pictures, one is a basic sketch of system with the vessel on the right being formaldehyde reactor that uses an HTF, therminol with a SG of .845 at 293 degree C, which is just below the boiling point. The smaller vessel on the left is the level gauge which uses a...

Homework Statement See figure attached. Homework Equations The Attempt at a Solution I'm having trouble getting start with this one, but here's what I've got so far. I assumed R is the signal received by the TDS. P(R=X) = \mu \quad , \quad P(R=N) = 1 - \mu Now in part...

In a single particle double slit (self-interference) experiment: the which-way information is got by having the detection instrument (or at-least part of the instrumentation) right next to the slits.To make it easier, Let's assume the following x-coordinates: at source of photon x = 0 slits...

I have a doubt about this, what is actually detected by a GW detector is a specific change in length (δl) in the arms of the interferometer due to the motion of the test masses being affected by the passing wave. But this variation is not of the proper length which is not uniquely defined in GR...

I have a vector signal, \underline{x}(t), which is afflicted with Gaussian noise \underline{n}(t). I take a finite number, L, of discrete observations and (based on those observations) want to determine whether: (1) Only Gaussian noise is present, \left[\text{i.e. } \underline{x}(t) =...

Hi Guys, I've felt the need to post a few times in 3 yrs, and this is one of them :) I tried to go back and thank contributors of another thread, but it was locked (likely because it was resolved, or 3 years old!). I'm writing for a camera equipped computer, tracking a red laser beam...

Hello, In experiments such as KamLAND, it is expected to measure neutrinos emitted by Japan's nuclear reactors. Such experiments were built to find evidence for neutrino oscillation. Is there anyone who knows how one can make the difference between the neutrinos from nuclear reactors and...

Hello, I'm currently a sophomore in high school and am interested in working on something to find methods of completely non-invasive toxin detection which I don't see out right now. I've noted that this is done by interpreting the spectra of different materials which could contain the...

Could someone please help me with this?? I am working on a problem with 2 pipes, one 100mm and one 150mm in diameter. The shape of the pipeline is a square. Majority is the 100mm pipe and the other is 150mm pipe. 1.If entire pipeline is filled with water, no leak and no supply, is...

Probability for detection ! I have to calculate the probability of alpha particle or photon being detected by Si detector from the 241Am source. How to know no of alpha that can be detected from the 241Am source ?? source have acticity of 3.7kBq and distance between source and detector is...

Strange title? Basically, a few days ago we got a dead rat in our ceiling, which is covered in insulation. Took a while to find it, but it got me thinking, how would you detect a dead rat body? If it recently died, I first thought you could use thermal imaging (aside from the expensive aspect)...

I have performed heat treatment (aging) on my alloy. In this process fine precipitates form in the matrix of the alloy, which strengthen the alloy. However, XRD spectrum could not show the peaks related to the fine precipitates. 1- Why the peaks are not detectable? Is it because of the...

Hope mods will allow this. Seeking comments on neutron detection techniques described in the linked paper. Authors are affiliated with China Institute of Atomic Energy, Beijing. This is a LENR paper with no theoretical content. Full text is free to download...

Hello All, thanks for looking at my post and question. I have jumped into deep statistical and probability waters which have outstripped my current state of knowledge so any help you can render would be greatly appreciated. Here is my question: I am trying to get an estimate of the original...

Homework Statement This is not a homework question, I am working on a project to get it data from how rough the road is, mostly road bumps/pot holes. My project is for a capstone project, I want to use an accelerometer to measure the upward G's on the car frame when goes over bumps, or into...

Has anyone come across any "far out there" ideas for neutrino detection? Just looking for some food for thought.

Hello everybody, I am basically in computer & electronics field. In one of my project, I want to get the status of the motor of cnc machines (to detect whether it is running or not). Speed is not important. Presently I am using proximity sensor near the motor shaft. I get pulses when motor is...

For a ground-based Cherenkov radiation detection, what are the theoretical/practical constraints on the gamma-ray energies we can detect? Simply speaking, if we have something like an IACT observatory, how do we know it's low and high energy detection limits? Is the higher one due to Cherenkov...

In Superkamiokande, How does one differentiate between muon being produced by neutrinos coming from upward than the muon being produced by the neutrinos coming from downward. http://hep.bu.edu/~superk/atmnu/

Hello everybody, I was wondering: why is "spooky action at a distance" considered to be more likely than a detection loophole? That is to say, why is Bell's Theorem assumed to imply that two entangled particles must communicate faster than light, rather than saying that a subset of particles...

A fighter jet has 1 m^2 rcs and is located at 200nmi. Where would a flock of birds with 0.0015 m^2 rcs should be located in order to have the same detectability?

Can someone explain to me this paper in laymans terms? I don't get it. They are claiming discovery of a new method of acceleration of cosmic rays in the centre of the galaxy. URL: http://arxiv.org/abs/1208.5483 Paper: Planck Intermediate Results. IX. Detection of the Galactic haze with...

Hello All, I am a graduate student conducting a shallow subsurface geophysics study over closed landfill cells and have run into a bit of a problem with my data collection. I have ran traverses spaced 10 m apart running E to W across cells with all traverse lines ran twice using two...

Practical detection of "similarity"? The world needs new mathematical ideas in order to solve the problem of making general purpose image recognition algorithms. What are some new ideas for approaching the problem of determining if two objects are "similar"? There are techniques for...

My problem is not so much with programming it, but rather determining which side is collided. And for those who aren't familiar with SDL, SDL_Rect is just a structure that hold an x and y position along with a width and height ( (x,y) is the top left corner of the rectangle). So here is how...

Hey folks, so perhaps some of you may have heard/read of Dietrich, et al, recent paper on dark matter "tendrils" being "directly detected" between the galaxy clusters Abell 222 and Abell 223 (see a synopsis by Nature here: http://www.nature.com/news/dark-matter-s-tendrils-revealed-1.10951). My...

hi...i want to design a energy detection device fror my home...i want to design it in a way tht it will also automatically switch off unnecessary load when consumption is high above the set value...can anybody help me with the design please...it wud be better if the xplanation is from grass root...

I was thinking, when we see headlines about new galaxy found to be oldest yet, or furthest away... is it possible that we could be seing some of these as earlier positions of previously found nearer objects?

I am having trouble seeing how a matched filter for FSK is any more "coherent" in its detection than an envelope detection incoherent FSK demodulator. The matched filter simply requires a precise sampling time at the output, however, surely so does the incoherent FSK demodulator? Matched...

I'm currently reading the chapter in Schutz about gravitational waves (though knowledge of/access to Schutz shouldn't be necessary to answer my question). After demonstrating how a passing gravitational wave will cause the proper distance between two points to change temporarily, he says: "A...

Suppose it is known that a photon has diagonal polarisation (e.g. it has just passed through a diagonal slit), then Alice comes along and measures the photon using a horizontal/vertical polarisation basis. So, I believe there is a 50% chance she will get a horizontal result and 50% chance she...

Could anyone provide a concise explanation of the function of a discriminator in what is basically a, Detector => Pre-Amp => Amp => Discriminator => MCA (Multi-Channel Analyzer), circuit. I have a basic knowledge of electronics, but I'm still new to this. Thank you!

Hi everyone, new to the forum and new to fortran. my coding skills have never been my strongest point and I'm struggling to understand the code from start to finish. If anybody can help me, i would appreciate it very much. Basically the code is used to detect breast cancer using the Yee's...

Homework Statement What is wrong with the code fragment: .ORIG x3000 AND R0,R0, #0 AND R2,R2, #0 ADD R2,R2, #7 JSR SUB ADD R2,R2, ASCII ADD R0,R2,#0 TRAP x21 SUB ADD R2,R2,#9 ADD R7,R7,#1 RET ASCII .FILL x0030 .END The Attempt at a Solution Ok, so first we ckear some...

In a Mach–Zehnder interferometer experiment, can you measure which path the beam took by measuring the change in momentum of the (fully silvered) mirrors (i.e. if path A was taken then the mirror on path A was "pushed" a bit, if path B was taken then the mirror on path B was "pushed" a bit)?

we r making a security system which involves face detection tracking of intruder CAN to point out the point of intrusion on GUI and sending message through gsm these r the features of our project but we cannot understand what title should it have to explain it completely in few words?

I was reading this journal on FO-PPR sensor and had a doubt. Couldn't exactly google for an answer as it was unclear. "Integration of fiber optic-particle plasmon resonance biosensor with microfluidic chip" by a group of scientists. I have attached the pdf. Under the section "Preparation of...

I'm trying to understand the entry labeled 1.2.3 on this page - http://setifaq.org/faq.html#1.2.3 The main point of confusion, for me, is what they mean by Tsys. At first, I assumed it referred to the temperature of the telescope, but in the table of results, its value changes depending on...

Here's my current project goal ( And what I need help with): I want to use an LED light source, shine it through a 1" x 2" slit and then use a linear array camera to detect the edges of the slit. The problem: Since LEDs are a point source of light emission, my camera has a difficult time...

I've been searching for information on this, but it comes with a caveat -- I'm wondering if there is a known means by which deposits of petroleum, coal or other "fossil fuel" deposits could be detected remotely with an orbital satellite, but not rely on such fossil fuel material giving any...

Hi, I have three situations where might be overflow is occurring. I need to write test cases to resolve this problem. I don't know how to continue after this, please anyone have suggestions to overcome this. Please help me.

Hey All, I'm probably going to get railed for not searching hard enough for an answer to my idiotic question, but here goes anyways... The double slit experiment results go like this [correct me if I'm wrong here] 1/ One slit open --> One band\probability dist. 2/ Two slits open -->...

Hi, i wanted to control one of my home appliances basically to switch it off after some time (as of now 10mins). i got stuck up at the first step itself where i want to know whether the switch is ON i.e. i wanted to detect whether AC input is on. So my basic question is how to detect a 230v...