Phase difference Definition and 155 Threads

There are two waves y1=a. sin(ω.t) & y2=a. sin(ω.t + φ) My question is what is the phase difference of these two waves? Is it "φ" or "φ/ω"?

Homework Statement Hi, This is not a homework question. I have my exam for my physics unit tomorrow. I am pretty set for it except for questions of this type. Can you please show me how I can get the answer? Thanks [/B] Homework Equations N/A The Attempt at a Solution N/A

Homework Statement A thin film of glass is in flush contact with a thin film of transparent plastic that has a higher index of refraction than the glass. Monochromatic light of a certain frequency is shown on both sides of this combination, and there is very little light reflected from either...

Homework Statement I have read that the phase difference between two sinusoidal signals is calculated as follows: $$\theta = \omega \Delta T = \frac{2 \pi}{T} \Delta T$$ Where ##\Delta T## is the time difference. This formula confuses me as it was derived from nowhere. I am asked to compute...

Phase difference between two component of Electric field vector seems to me that the phase difference for circular should be of odd multiples of 90 but its not 90 when n value substituted. Please help for solution..

Phase difference between clocks with distance Homework Statement Derive Phase difference between clocks with distance Homework Equations I honestly don't understand how this equation ΔT = vD/c2 is derived/figured out. The Attempt at a Solution We haven't covered Lorentz...

Homework Statement A radio station transmits a radio wave of 100Mhz. The radio wave is detected by a receiver via two diffrent paths , a direct path and refelcted path form a wall. The distance traveled by the radio wave for a direct path and refelcted path is 1500m and 1512 m respectively...

Homework Statement the question doesn't state that which particle is leading/lagging which particle. Homework Equations The Attempt at a Solution for the first particle, my working is 10 sin(2pi/3 )= 8.66cm for the second paticle, my working is 10 sin(2pi/3+ 30pi/180)= 5 cm...

Homework Statement since point P is ahead of point O, why the displacement , y , of P shouldn't be Asin(wt + 2pi/(x)) ? Homework Equations The Attempt at a Solution

Homework Statement i can't understand why curve above is for under dampling and the below curve is increased dampling. can someone explain please? https://www.flickr.com/photos/123101228@N03/14296397365/ Homework Equations The Attempt at a Solution

Homework Statement for part ii , why the phase difference isn't =pi/2 ? I'm having problem uploading the photo .https://www.flickr.com/photos/123101228@N03/14289633415/ Homework Equations The Attempt at a Solution

Hi, I'm trying to figure out what phase differences take place with an ideal transformer. This is what I have figured out so far: If you apply an AC current to the primary coil then you will get an alternating flux in the primary and secondary coils simultaneously therefore the fluxes are in...

I'm wondering about small changes of phase due to a refractive medium. For example, suppose there is an emitter of radio or light waves, and two detectors equidistant from the emitter. One of the detectors is behind a medium, while the other is a straight shot through a vacuum. How would...

Homework Statement The potential difference across a circuit is given by the complex number V=40+j35volts and the current is given by the complex number I=6+j3 amps a) sketch the appropriate phasors on an Argand diagram. b) Find the phase difference between the phasors for voltage V and...

Homework Statement Light with wavelength 540 nm is split into two beams that travel along two paths. The difference between the path lengths is 3600 nm. What is the effective phase difference when the light recombines? Homework Equations \phi = (2pi/λ)*ΔL The Attempt at a Solution...

1. Hey, the question I believe should be fairly simple to solve but it's been a while since I've looked over such content. There are two light waves that enter a crytstal at the same time, one linearly polarised parallel to the optic axis and one perpendicular to the optic axis, they have...

Homework Statement An observer stands 3 m from speaker A and 5 m from speaker B. Both speakers, oscillating in phase, produce waves with a frequency of 250 Hz. The speed of sound in air is 340 m/s. What is the phase difference between the waves from A and B at the observer's location...

Homework Statement A beam of light of wavelength 606 nm passes through two slabs of material of identical thickness d= 1.40 micrometers, as shown in the figure. The slabs have different indices of refraction: n1= 1.51 and n2= 1.68. What is the phase difference (in radians, do not enter units)...

Homework Statement Its part B ii) and iii) that I'm stuck on.Homework Equations Apparently for stationary waves, the phase difference between two particles = m(pi), where m is the number of nodes between the particles. This is according to my textbook here: The Attempt at a Solution So...

An observer stands 3 m from speaker A and 4 m from speaker B. Both speakers, oscillating in phase, produce 170 Hz waves. The speed of sound in air is 340 m/s. What is the phase difference (in radians) between the waves from A and B at the observer’s location, point P? And I have no idea how...

Homework Statement See attached image Homework Equations Δphi = 2pi(Δx/λ) + Δphi0 = 2pi(m) -- at the maximum Δphi = (m + .5) (2pi) -- at the minimum The Attempt at a Solution The first step should be to solve for lambda, the wavelength. So I plug in the knowns: At 30 cm...

Homework Statement Atomic losses can be described in the Lorentz model by adding into the equation of motion a damping term proportional to velocity. The equation of motion is then \partial ^2x(t) / \partial t^2 + \gamma \partial x(t) / \partial t + \omega_o^2 x(t) = qE/m Consider the optical...

ok, I would just like to know in general b/c we have to do this a lot. The equations have the same amplitude, but different k and w suppose you have y1 = Asin(k1x-w1t) and y2 = Asin(k2-w2t) and only other information is they are on a string, at a point x, and a time t. side note...

Homework Statement Two loudspeakers emit sound waves along the x-axis. a listener in front of both speakers hears a maximum sound intensity when speaker 2 is at the origin and speaker 1 is at x=0.50m. If speaker 1 is slowly moved forward, the sound intensity decreases and then increases...

Homework Statement Find the phase difference between two harmonic oscillators at time t=1 Homework Equations I've already found x(t)= .4 cos(2.1t) and x(t)= .4cos((pi/2)t + pi) The Attempt at a Solution I don't really know where to begin

Homework Statement Light of free space wavelength 600 nm (6000 Å) travels 1.6 10 -6 m in a medium of index of refraction 1.5. Find: 1. the optical path length, [This is the physical path length x refractive index.] 2. the wavelength in the medium, and 3. the phase difference...

When two wave functions are in perfect phase = constructive interference when the phase difference is half (the wavelength) = destructive interference What happens when the phase difference is more than one wavelength in case of: Case 1: single particle interference Case 2: two-photon...

Hi, I am repeating first year exams and would really appreciate some help with my study. Just can't seem to get my head around this problem. Homework Statement Consider two identical ideal springs with a mass m attached which are harmonically oscillating out of phase relative to each...

Hi, I can't get my head round this: Suppose I have two transmitters A and B, at different distances (d_A, d_B) from a reciever, C. Each transmitter transmits a sinusoidal wave towards the receiver, which I will be modelling as 1 dimensional traveling waves, each given by the equation...

Homework Statement http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20%289702%29/9702_s09_qp_2.pdf number 5b The speed of sound is 330ms-1 The frequency of sound from S1 and S2 is increased. Determine the number of minima that will be...

Homework Statement In the figure below, sources A and B emit long-range radio waves of wavelength λ = 390 m, with the phase of the emission from A ahead of that from source B by 90°. The distance rA from A to detector D is greater than the corresponding distance rB by 130 m. What is the phase...

Homework Statement A beam of light of wavelength 600 nm passes through two slabs of material of identical thickness d= 1.40 micrometers, as shown in the figure. The slabs have different indices of refraction: n1= 1.41 and n2= 1.58. What is the phase difference between the two parts of the...

does getting which-way info introduce a phase difference (or cause de-coherence) between both the "waves"? and does erasure of which-way information restore coherence?

hi i have a textbooks that says that if you have a driven RLC at its resonance frequency and now you increase the inductance, then you would measure a phase difference between the external emf and the voltage at the capacitor that is now greater than pi/2 unfortunately, i do not know how to...

Hello everybody, I'm having some trouble comprehending the following image. I am supposed to be able to deduce from the figure that the total difference in phase angle is (k-k')r. To begin with, I do not understand why for the diffracted wave the difference in phase angle is -k'*r while for the...

Homework Statement Wave functions: y_1=2.00sin(20.0x-32.0t) y_2=2.00sin(25.0x-40.0t) The units are centimeters and seconds. What is the positive x value closest to the origin for which the two phases differ by \pm\pi at t=2.00 s The Attempt at a Solution My understanding is...

1) Two sine waves have equal peak to peak amplitudes 89 but are out of phase by 180 degrees. What is the peak to peak amplitude of the resultant wave. 2)Two sine waves have equal peak to peak amplitudes 81 but are out of phase by 90 degrees. What is the peak to peak amplitude of the resultant...

Homework Statement Sources A and B emit long-range radio waves of wavelength 550 m, with the phase of the emission from A ahead of that from source B by 90°. The distance rA from A to a detector is greater than the corresponding distance rB from B by 140 m. What is the magnitude of the phase...

Homework Statement Electromagnetic waves contain time varying electric and magnetic field perpendicular to each other and also to path of progression. The phase difference between electric field vector and magnetic field vector is zero Homework Equations The Attempt at a Solution...

In an RC circuit, two parallel branches, one branch with two resistors in series, and the other with a resistor and a capacitor in series. What is the phase difference between the two parallel branches of an AC signal? Have R, C, f. I was told I would be able to calculate this phase difference...

Homework Statement I have a graph of two sinusoids which I need to find the frequency of and phase difference between the two. I have the frequency easily enough, I hope, and I found what I believe is the actual formula for each wave. But I have no clue as to finding the difference. Homework...

for one section of my project, i need to know the phase difference between two signal. they are both 40MHz, but out of phase by a certain angle. i have a AD8333 board from Analog Devices, it is a dual I/Q demodulator consist of double-balanced gilbert cell mixers. The board has 2 RF inputs, a...

Hello, What are phase difference and path difference? Can you give me a simple explanation so that I could imagine It would be great if there are some illustrations Thanks

Homework Statement I have another Wave Interference problem that I am having trouble with. http://img199.imageshack.us/img199/6104/questionsv.png Homework Equations [PLAIN]http://img151.imageshack.us/img151/3535/hintg.jpg The Attempt at a Solution f = 90.0 MHz λ =...

Homework Statement Please see pdf file. Thank you. Homework Equations The Attempt at a Solution

I have a question. Why is it that the phase difference between two oscillating points which are both located in between two ADJACENT nodes is zero ? Can someone prove this via a calculation ?

Hi, I'm having some trouble understanding the path difference between two parallel rays leaving a single slit, and was hoping you guys could help me. I'm having a hard time understand what path differences exist for each subsection of a slit and for which minimum. For example: -What is the...

Homework Statement See figure attached. Homework Equations The Attempt at a Solution \Delta L = asin\theta = m \lambda If the waves are in phase, we would expect L to me a integer number of wavelengths, when they are out of phase, L should be an odd number of wavelengths, but...

Homework Statement A source is transmitting a sound wave of frequency 115 Hz. A receiver detects the direct sound wave and the sound reflected from a small section of wall. Speed of sound is 345 m/s. It also gives a diagram of sound waves leaving a source, one hitting the wall, reflecting...

Homework Statement Light of wavelength 526 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33. (c) What is the phase difference between the wave reflected from the top of the air-water interface and the one reflected from the bottom of the...