Resonance Definition and 630 Threads

Here is my question: Can light of multiple wavelengths (for example sunlight) that is transferred through a fiber optic cable be amplified equally with resonance? If this is not possible, are there other methods besides resonance to achieve this effect. If optical resonance is used, how do the...

I have two doubts in my course regarding resonance and aromaticity... (1) In various resonating structures, the hybridization of an atom may vary. Eg:- in aniline's nitrogen atom, it is sp3 as well as sp2 in different resonating structures. Since the actual molecule is a weighted mean of all...

Hello Physicists, I don't have an actual math problem, just a conceptual one. I was wondering specifically about light resonance. If I understand resonance correctly, if one has two mirrors directly facing each other, one can create a standing wave. At a certain frequency of the light...

Homework Statement i need to find values of capacitors coils and resistors in order to create resonance mixed circuit on the frequency of 100 hrz (as shown in the following screenshot) Homework Equations ω0=1/√(L*C) ω0=2∏f0 The Attempt at a Solution

What does the below senetence mean? I don't understand it, maybe because of my not so good english. "When the wavelength becomes of the same order as the layer thickness, resonance occurs. " Does it mean when the wavelenght and layer-thickness are exactly equal (e.g. both 0.1m)? Thanks.

Hi, I am currently struggling with this AC question that is required for my first year electrical engineering coursework. I know sort of how to go about it all, but am having a really difficult time implementing the correct calculations. Any help would be appreciated! Context You are given a...

Hello, As we know, when you blow over the neck of a bottle, it resonates at a certain frequency. I want to build a cylinder that will resonate at a certain wind speed: 4 mph or about 1.78 m/s I definitely know how to find the resonant frequency of a cylinder. However, I'm not sure what...

Homework Statement A pipe resonates at successive frequencies of 540 Hz, 450 Hz, and 350Hz. Is this an open or a closed pipe? Homework Equations L = (nλ)/2 or L = ((2n-1)/4)λ v = fλThe Attempt at a Solution The difference between the first two frequencies (540 & 450) is 90Hz, and the...

Homework Statement Why does the following structure show resonance? Homework Equations The Attempt at a Solution The question was given by my teacher and he said that yes it will show resonance. But i still can't able to make it out why would it show resonance? The point is...

So, I was reading a book on Nikola Tesla the other day, and it said that he said that he could theoretically split the Earth in two with resonance. If I had a variable frequency oscillator, and I knew the natural frequency of an object, obviously I could create a standing wave. But, could I, as...

hi , i have studied that thing to be heated in microwave oven have water contents -due to resonance of microwave and frequency of water molecules - water molecules start oscillating with larger amplitude thus thing gets heated. But how just ceramic without any water contents get heated and how...

for 15 a) (question in attachment) using given 0.54m i calculated L1 also after rearranging L1=λ/2 i got wavelength which is 1.08m L2 = λ and since the distance between all the resonant lengths is always the same, i just added 0.54 to length 2 to figure out length 3 which is L3=1.62m my...

Trying to figure out how to go about solving this question, using these forumlas i tried to solve it but i didnt get the right answers for frequency 1 i went with f1=v/2L for frequency 2 i went with f2=v/L any ideas on how to solve this?

Consider the attached xls which shows the plot between frequencies and resultant displacements. Does resonance position always correspond to a point where the slope of the curve )curve between frequency and resultant displacement) is zero? Please help

Homework Statement The water level in a vertical glass tube 0.931 m long can be adjusted to any position in the tube. A tuning fork vibrating at 629 Hz is held just over the open top end of the tube, to set up a standing wave of sound in the air-filled top portion of the tube. (That air-filled...

I'm doing a research project which aims to develop a mathematical correlation for fatigue life prediction at resonance frequency. An experimental setup is also to be created which would be used to carry out the experiment, cyclic loading cycles until failure. For this a Cussons linear vibrator...

I'm looking at this question and I can't seem to come up with an answer, don't the VL (inductive voltage) and Vc (capacitor voltage) just cancel each other out leaving you with Vr (resistance voltage) as the source voltage, but I don't see why VL and Vc are much higher than the source voltage...

Hi!:smile: I have a LC circuit in pspice schematics, i want to simulate graph: input voltage versus frequency,to see resonance voltage. To simulate at least something i must give power source (VAC) some value,so when i choose to trace voltage in power source at the graph, its the constant value...

Sorry if this is in the wrong subsection, i figured this would be the most appropriate section. *** title has a mistake. i meant resonance WIDTH not its freq.*** anyway, i came across resonance WIDTH (sorry not freq.) in one of my HW problems. I honestly can't recall ever going over this in...

I'm trying to derive the resonance frequencies for a simple fixed-fixed beam, as opposed to a simply-supported beam. I'm working off the following references: 1. http://emweb.unl.edu/Mechanics-Pages/Scott-Whitney/325hweb/Beams.htm But this is for a fixed-free cantilever beam. And 2...

Homework Statement A pipe, open at one end, has a leng produces pipe A, open at one end, and pipe B, o A pipe, open at one end, has a length L. Cutting this pipe crosswise produces pipe A, open at one end, and pipe B, open at both ends. a. For what length of pipe A will the third...

Is there any systematic, predictive way to calculate the resonance frequency of a given molecule? Say I'm given a formula and a structure but nothing else. Is there any way to calculate it without just experimenting? I'm not sure if this question is in the right place, and I'm not...

Also, is spin +1/2 the same as spin up? And is spin -1/2 the same as spin down? The first image in the link below is a good reference. http://depts.washington.edu/cmditr/mediawiki/index.php?title=Electron_Spin_Resonance_(ESR)" Thanks, Jake

I'm finding that I don't really understand what a resonance, in the quantum mechanical use of the term, is. From what I get out of my texts it's related to an infinite square well potential. Is it when a particle is trapped but not bound? (I'm not even sure that last sentence makes sense in...

Currently Jupiters moon's Io, Europa, and Ganymede are in a Laplace resonance. If Mars's moon's Phobos and Deimos were in such a Laplace resonance (1:1, 2:1, 4:1, 8:1) would it affect Mars? If yes, please explain how you feel it would...

For the equation, angular frequency =(2)(pi)(resonance frequency)= 1/square root (LC), can this also be used when a circuit is not at resonance frequency? Thanks

Prove that at the resonance of a series RLC circuit, instantaneous velocity across the capacitor is equal to negative instantaneous velocity across the inductor, and thus, the total voltage across C and L is zero. Thanks!

The energy difference between two nuclear spin states in an external magnetic field B is given by \Delta E = \gamma \hbar B Why does resonant absorption of electromagnetic radiation by nuclear spins take place at the Larmor frequency? Shouldn't it be that the photon energy is equal to the...

I found via this forum the hint to use the inverse squared equation to differentiate to find the resonance frequency from the amplitude equation (equilibrium not transient solution). Thank you! (AlephZero?) When substituting the resulting frequency for the resonance into the amplitude...

I want to understand MRI and what exactly is T2. I have read the November issue of Sci-am and I'm still confused what exactly is T2 as it has different descriptions. The article "The Incredible Shrinking Scanner" by Bernhard Blumich: "The system can also monitor the precessing spins as they...

A friend of mine and I were having a discussion about acoustic resonance. He theorized that a building could be destroyed by acoustic resonance. Where I disagreed. Thinking that a building doesn't really have an acoustic resonance because of its non-uniformity of being brick and mortar...

hi, i am new bie in power sytem. I have found term "harmonic resonance" in power system, when i was gooleing, i found that resonance means XL = XC. but i can't figure it out in my head. what the harmonic resonance is? i have tried to find graph or figure that explain it, but the result is...

A question in ExamKrackers asks us why triphenylmethanol is so acidic. Link to the structure below: http://en.wikipedia.org/wiki/Triphenylmethanol Explanation: I'm not seeing how the lone pairs on the Oxygen could donate into any of the rings though. It can't donate those electrons onto the...

Hello, there is a subject of wave propagation and collapse that has plagued me for some time, and although i must have heard about it, my memories are probably skewed ( i studied EE and had high frequency, physics of materials and nuclear/quantum physics sometime in 1970s :) as subjects). In...

Hello, I am looking into the Feshbach resonance for Fermi gas (Lithium in particular). The following is unclear: Is it correct to say that there is a repulsive interaction between the atoms in the regime, where the scattering length is positive? I have found various sources saying so...

hello. ok so i know that if you have two tuning forks of the same natural frequency, one can stimulate the same frequency to another and resonance is achieved. but what if I have a 100 Hz tuning fork and say maybe a 180 Hz tuning fork. If a strike the 100 Hz one, how will the other one be...

Homework Statement Hi! We did a resonance lab using a closed air cloumn and 3 different tuning forks, each with different column lengths and i collected the data as follows: frequency(hz) column length(m) # of wavelengths wavelength(m) speed of sound air temp 384...

I have a question about resonance. According to this graph, http://en.wikipedia.org/wiki/File:Resonance.PNG When no damping force (the red line), there should be no energy loss due to frictional force or other damping force. So the energy should be fully transferd to the system from the...

Homework Statement Find resonance frequency and build schedule(google translator) for input resistance(or input conductivity) Homework Equations K1xL1/L0=70 K1xL2/L0=60 K1xL3/L0=76 K2xC1/C0=80 K3xC2/C0=50 K3xC3/C0=60 The Attempt at a Solution C0=1mkF L0=1millihenry What do...

I'm brushing up on my knowledge behind the physics of NMR. Turns out there was a lot I had misconceptions about; I thought it was very similar to absorbance/transmittance spectroscopy. I read some material about it which threw that idea out the window. I'm now looking at a video that shows a...

Hello, I was hoping that someone might be able to provide a definition for the "resonance self shielding correction". -TP

Hi! Recently I did an experiment of an RLC circuit nearing resonance, and I found a substantial amount of loss of both current and voltage (30%). (More so than a different kind of AC circuit) My question is, why is this so? Or is this just a coincidence/human error? Some of...

Our sound will be like "Donald Duck" if we inhale helium gas and the explanation from web is because" The cavity resonances which determine the vocal formats would be raised by the higher sound speed,"(http://hyperphysics.phy-astr.gsu.edu/hbase/sound/souspe.html). Why cavity resonance raise as...

In a parallel or series circuit comprising an inductor and a capacitor, is the resonant frequency value of the circuit affected by subjecting the inductor to a magnetic field ?

Hi there, I am trying to understand resonance, but i haven't wholly grasped the concept. As far as my knowledge goes, if one evokes a wave upon an object, at the same fundamental frequency as the object, then a standing wave occurs and the object "resonates" the obvious case is the singer...

Homework Statement Sorry for wasting your time and bandwidth, but I can't figure this out. I just have a cantilever beam with the following specifications: length : 40 in. width: 2 in. height: 2 in. E = 30e6 psi. mbar = .8991 lbm/in. And I'm trying to find the beam's resonance...

Homework Statement You have a stopped pipe of adjustable length close to a taut 85.0-cm, 7.25-g wire under a tension of 4150*N. You want to adjust the length of the pipe so that, when it produces sound at its fundamental frequency, this sound causes the wire to vibrate in its second overtone...

Hi, I wonder if anyone can help me with a personal research project. Besides being an educator I am also a motorcycle aficionado. I enjoy the deep rumble of a Harley Davidson motor. I own three Sportsters. My goal is to give my "small" Harley's the deep rumble of their bigger siblings. To this...

[PLAIN]http://pokit.etf.ba/get/6e89526dc84a619992d2d771c7cc7fb6.jpg After switch is closed, Xl=Xc. Current resonance kicks in. Thats from the set of the problem. Now there is no current I no more right? But I1 still exists. How come? How come you don't have current in that one branch and...

I'm having some problems understanding resonance in an LCR network where the capaitor is in parallel to the inductor and resistor, which are in series. How would you go about deriving the equation for the transient response (to a square wave) and the steady state response to a sinusoidal wave...