Delay Definition and 197 Threads

Hi Suppose there are two continuous signals of same frequency say 4 KHz. The time corresponding to its one cycle is around 250 us. If we delay one signal by 4010 us (i.e >> one cycle delay), can we use cross correlation techniques to estimate this delay accurately? Thanks

Hi all I am generating two signals of same frequency, i introduce a fixed delay in one of the signal and then try to find out the simulated delay using MATLAB 'gccphat' and 'finddelay' functions, but not able to measure correct delay. MATLAB Code script is given below: clc clear close...

I'd guess this kind of circuit is widely used. Is there an IC available that has this functionality? I need a circuit that has a power supply (12V or 24V), an input signal and an output signal. The wanted behavior is: 1) output goes ON immediately when power is connected (independent of input...

Hi everyone I modified some code that originally displayed a toast when the screen was pressed and held. The original code used onTouchListener with a relative layout, but I changed it to a button instead. I think I've copied it correctly, but my program crashes when the button is clicked. I...

Summary: Question about expectations related to electron flow and conductivity. Here's a question I have... imagine a scientist in a lab. In front of him there's a battery (with typical red/black +/- poles). Behind him is a normal light socket. Now, between the battery and the light socket...

I heard about this yesterday on the radio. Both sides (the airlines and the cellphone carriers) have very strong economic interests at stake, and hopefully a good (safe) technical solution can be found and tested quickly...

Hey all, I was doing some tests in lab when I noticed that between two 4.5m RG174 SMA cables, there was a 1ns difference in delay at 4MHz between the two cables. To clarify, theory says 4.5m of RG174 (66% velocity factor) at 4 MHz should have a delay of 22.7ns. I measured one cable at 22ns and...

Hello! (Wave) Let a binary adder carry-skip of $32$ bits, at which the size of the individual adders is not necessarily the same. Suppose that the individual adders are adders spreading carry, and that the skip is not done at the first and at the last individual adder. If we can use 4...

I know that there is phase delay in damped driven oscillation but I want to know is there any phase delay in undamped driven oscillation when we apply sinusoidal driving force. When driving force is maximum, displacement is also maximum as well right?

In every article that I've read about optical interferometers they explain that collimated light from farther the telescope is sent down the delay line, and then into a beam combiner with other beam. Like in the photo below But they all only show light that enters the telescope along the axis...

This device, if it or something similar exists at all, needs to be completely mechanical without ANY electricity and be really precise and strong (to last a long time). Press a button in order to trigger the start of the delay time. It must start only when the button is fully pressed down (or...

Suppose you have a battery wired to a light bulb and switch via a long pair of conductors, say 1 light second long. Assume for now that electricity travels at c. The switch is thrown. How long does it take the bulb to light? Does the electricity take 1 second to get from the battery to the...

I know that there isn't any delay that depends on the distance between particles, by the time it take to signal l to arrive from point a to b , but do there is any small delay that doesn't depends on distance . like the Minimum distance between two bodies divided by the speed of light . for...

I've found this page on internet:http://www.dip.ee.uct.ac.za/~mdevill/emthrust.htmlOn this page it's clearly explained what i was trying to explain on one of my topics:http://www.physicsforums.com/topic.asp?ARCHIVE=&TOPIC_ID=3315I promise you i haven't visited the page before, but the idea is...

Forum members: I'm a first year physics student that needs help understanding "fields" a little better. . . specifically:Suppose you have a negatively charged particle (stationary). That creates an electrostatic field around the particle. Now suppose another charged particle appears at some...

Is matter created in nuclear reactions and if so presumably there would be a delay (because of the the constancy of the speed of light) before a force of gravitation or nuclear attraction would be felt between two created particles.If this is the case, is it because messenger particles have to...

If you have a long bar of matter which is non elastic and you move one end of it, the other end won't move instantaneously.This is because nothing,not even information can travel faster than the speed of light.So there must be a delay between the motion of one end and that of the other.What is...

From the topic "electrostatic fields" by Smithpa9 I get some conclusions, and new ideas:Conclusion: A static field (really static, hehe) is everywhere, but its variations take time to travel along space.Idea: We can use this delay time to get unidirectional forces.Supose two fronted...

I encountered a problem when calculating the Shapiro Delay for a radar signal from Earth to Venus on the other side of the sun. The integrand blows up at one of the integration limits, so I think that means the integral is infinite. So far, I have been unable to totally follow Zee’s (Einstein...

Homework Statement: There are the propagation delays from High to Low and from Low to High, and I wonder if they are equal? Homework Equations: That is $$ t_{PLH}=t_{PHL}$$ I suppose they should be equal.

Hello, my name is Jack and I'm a year 11 student in Australia. After listening to, and reading some information regarding quantum entanglement, I'm still a little unsure about the solution to a thought experiment: Let's say that I create a situation in which multiple pairs of particles are...

1) What is the relationship between buffer at encoder and buffer at decoder? 2) How much preloading is necessary to ensure no buffer empties over the length of the simulation I.e. what is the minimum no. of bytes that must be in the buffer? 3)How to estimate delay due to buffering? 4) What is...

Or both? The cycling between 'stretch' and 'squeeze' is caused by the orientation changing of the black holes with respect to us. Correct? This is understood as waves (or pulses) moving through space, Correct? So they take time to get to us. So, consider the orientation which yields us being...

Homework Statement I have to simplify this beam form (equation 1) which simplifies to equation 2 and then finally to equation 3. Homework Equations equation 1: e^-ix((1-e^y)/(1-e^z)) where x = Beta*M_(1/2), y = beta*M, z= Beta equation 2: sin(M*Beta/2)/(sin(Beta/2)) equation 3...

Former 'Mars czar' in a Phys.org interview: Read more at: https://phys.org/news/2018-08-mars-czar-latest-news-red.html#jCp But would it? Surely the Moon is a perfect launchpad for Mars, a testbed, and a supply base? Going from Earth direct is a truly huge task. From an established Lunar...

Say you were doing some research on some topic. You were very enthusiastic with it, and you had devoted a large amount of time in the research. Perhaps you would have been the first to discover something or make a theory on it. Then all of a sudden, one day you discover that someone else has...

Hi all, I am trying to create a very basic delay using a TMR0 (timer) function as part of a rotating sequence for 4 LED’s with the option to reverse direction. I know I’m almost there but I could do with a little guidance to be honest. I’m using PIC16F84 and datasheet can be downloaded from...

Some new papers appeared about processes in the collision of the two neutron stars, measured in August 2017. Is now more clear, why 2 second delay between gamma rays and gravitational waves happens?

Hey! :o A public transport company claims that its buses are at least $95\%$ on time. (A bus is still on time here, if he has at most $3$ minutes delay compared to the timetable.) A sample size of $n = 1000$ at various stops results in $66$ delays. The probability that a randomly selected bus...

I'm trying to understand the time delay induced on each photon when several individual photons travel in an open space from a sender to a receiver for example in the application of Quantum Key Distribution. So what I understand so far is light(photon) travel around 299,792 km (186,282 miles) per...

Homework Statement Hello. I have a problem, which is as follows: A seat in a concert hall is 84 ft from the tympani. The tympanist strikesa single note. The sound pressure level of the direct sound of the note at the seat is measured to be 55 dB. The first reflection from the nearest sidewall...

The voltage value on a wire a distance away from the signal-port (where we apply the initial voltage) has a phase delay because the current takes time to travel down the wire. But how do you visualize this? First we have a voltage at the beginning, and that causes current to flow. Then a...

Hey everyone, I need to make or design a simple mechanical time delay. This probably isn't easy since I can't find anything on the market that's small and cheap. Was thinking some wind up toy might work, haven't found the right one yet. I was thinking maybe small box with a rod coming out of...

hi, i am designing a fuzzy logic controller, i need to use a delay block for the change in error signal now i don't know that based on what factors should i choose the sampling time for this unit

Hello, I'm working on a (private) Software Project and Part of that is finding a Way to Predict Projectile Positions. My thought's are explained from a Code View a little bit, but I tried to clarify everything so everyone could understand what's going on. (It's my first time in this Forum, I...

I have a question regarding the time delay margin. I know the definition of time delay margin now I want to know that for the stability of the system is it good to have large time delay margin or small time delay margin?

If we switch a super-conductor between normal and Meissner states, using varying magnetic field, there has to be some delay from when the field exceeds the critical field to the appearance of Meissner state. Have there been any experimental measurements of this delay? What are the measured values?

In a 'one photon at a time' double slit experiment, does the interference pattern still emerges if the time delay between individual photon emissions is increased to minutes or even hours?

Perhaps the title of this post is not quite correct because I could not find a way to abbreviate what I am asking. Picture a magneto circuit, where, an alternator is used to generate an AC flux into a primary coil of a ignition coil by means of a magnetic core (the primary is wrapped around the...

I have 2 PERFECT data of the transmitter and receiver. From 2 data, I can calculate the delay estimation: Fs = 8e6; % sample rate ... for i = 1:2 [cc_correlation,lag] = xcorr(signal2(i), signal1); [cc_maximum, cc_time] = max(abs(cc_correlation)); cc_estimation...

hi everyone. i'm only 16 so please beer that in mind. I've been doing some reading around and have come across the idea that light slows down in an dense medium as a result of the photons moving tough other particles with a slight delay however they retain all factors about them selves apron...

I'm trying to construct an analog delay (series of low pass filters) and demonstrate the properties of a transmission line (reflection, attenuating etc.) using a multisim simulation (my attempt attached below). But on the oscilloscope I don't get any kind of reflection. What should I do...

I have 2 data files, which links are attached below: Transmitted data https://www.dropbox.com/s/0nmhw6mpgh7upmv/TX.dat?dl=0 Received data https://www.dropbox.com/s/xgyo6le3bcmd25r/RX.dat?dl=0 Those binary data are read by this MATLAB code: %% initial values: nsamps = inf; nstart = 0; %% input...

I really need help to understand these questions which is highlight, for the GPS situation, I hope anyone who has been working in this situation before, please help me to have a clear understanding about "time delay estimation": Here is the scenario: 1. Suppose I know precisely I have transmit...

Hello! Starting from a gaussian waveform propagating in a dispersive medium, is it possible to obtain an expression for the waveform at a generic time t, when the dispersion is not negligible? I know that a generic gaussian pulse (considered as an envelope of a carrier at frequency k_c) can be...

I am stuck in the middle of building a circuit for an aircraft starting mockup that will train our students to correctly start the aircraft without accidentally re-engaging the starter and thus causing very costly maintenance actions. The system is 12v. We would like to have a 10 second delay...

I realize that this question has been asked many times on this forum, however, I have yet to come across a satisfying/understandable answer that takes into account gravitational time dilation. Premise: The speed of light inside a gravitational field is slowed down relative to a distant observer...

How does the zero time delay between illumination of light and emission of photo electron provides an evidence for the particle nature of light?

I am trying to calculate the unit vector and standard deviation of the signal. I hope everyone can give me ideas. Here is my scenario: I have 2 rx channels: - f is channel 1 with the length 1x256 complex, then FFT. - g is channel 2 with the length 1x256 complex, then FFT. - from f and g, I can...

Hi everyone, I am a new student who is studying on collecting data from TV signal. I hope everyone can help me for ideas. I am having spectrum analyzer which can define a TV station around me, so I chose 4 stations WHUT-TV [584MHz 590MHz], WPXN-TV [590MHz 596MHz], WTTG [60 MHz 608MHz], and WNVC...