Medium Definition and 390 Threads

Is the Gravitational force between the two bodies depend upon the medium between them?and is the gravitaional force is quantized?

Can electricity be transmitted using Concentrated beams without using wires with no energy lost in the process?

My answer is: it is the relationship between the angle of incidence and the angle of refraction. Is it correct? If not, what should be the correct answer?

Homework Statement It is actually not a problem, but a formulation of the electric potential energy in a dielectric medium present in a book, which seems to me as inconsistent with the way it is usually defined in electromagnetism books. I can't see it as a typo or a mistake because the author...

Homework Statement 2 parallel rays are traveling in a medium of refractive index 4/3. One of the rays passes through a parallel glass slab of thickness t and refractive index 3/2. What will be the path differnce between the two rays due to the glass slab? The Attempt at a Solution The...

A study of the motion of a relativistic continuous medium http://www.springerlink.com/content/j8kr55831h411365/

Homework Statement I have tried to solve the displacement sideways of an lightray through a medium with snells law. The question is how much does the ray travel in x-direction in the new medium with width D. It says in the text that one should use pytagoras but I can't seem to understand...

A photon goes from vacuum into a medium. This causes its momentum to reduce. Hence by the de Broglie formula, its wavelength should increase. But, since the refractive index of the medium is greater than 1, and n_2/n_1 = \lambda_1 / \lambda_2 , and hence, its wavelength should decrease...

Homework Statement ~ Homework Equations integration The Attempt at a Solution for a) i use linear density and calculate the mass of circumference and integrate it bottom to top. is it riight?any other methods? for b) i use surface density and calcuate the mass of disk and...

Homework Statement 3. Consider the reflection from the boundary between air and an absorbing medium. We can use the usual Fresnel Equations, but with a complex refractive index for the absorbing material. For various angles of incidence, use the real parts of the refractive index to...

Does the superposition principle for wave equations (say electromagnetic) hold also for non homogeneous and anisotropic media? I.e. can one always represent a wave traveling in an arbitrary direction as a sum of waves propagating along the principal axes of, e.g. dielectric tensor \epsilon_{ik}...

Homework Statement A plane monochromatic wave propagate in an infinite ferrite medium which is magnetized to the saturation at an angle theta to a constant magnetic field. The magnetic permeability of the ferrite is given by the tensor of the form: mu_ik = ((mu_a, -i mu_b, 0),(i mu_b...

What is the difference of a magnetic and nonmagnetic medium? And how does it affect wave propagation on these mediums?

hi the airy disk equation is d= 1.22 lambda / NA my question is: lambda is the wavelength in medium or in vacuum? thanks in advance

Let us consider Maxwell's equations in a homogeneous isotropic medium. We may look for a set of transformations for which the form of the equations remain unchanged[in accordance with the first postulate of Relativity].Of course we get the same Lorentz transformations but with a different value...

How do I calculate for velocity of a falling object through any medium at any given time if I have to consider both buoyancy and viscous drag. If I consider Newtons law , I assume that it would be something like m(dv/dt)=Fnet =mg-Drag-Buoyant force Am I supposed to get a...

Homework Statement A projectile enters a resisting medium at x=0 with an initial velocity v0=900ft/s and travels 4in before coming to rest. Assuming that the velocity of the projectile is defined by the relation v=v0-kx, where v is expressed in ft/s and x is in feet, determine (a) the...

When light enters into a denser medium,its velocity decreases.I can understand it is due to the optical density.But when the light again comes out of the denser medium,how does it regain its speed(i.e velocity of light).

I'm wondering if the speed of light in a medium other than vacuum is well defined. I explain myself: Say I am underwater and I create a laser pulse. I know that at any given time, the speed of the photons constituting the light is always c. However I also know that photons will get absorbed...

What is the explanation for the phase change of pie that occurs when a light ray gets reflected from an optically denser medium? This fact was demonstrated by the Llyod's mirror experiment, but what is the theoretical explanation for it? Thanks

Can sombebody help me where i can get the test procedure for cable sheat integrity test for medium voltage cable, as per IEC 60229 STANDARD?. and does anyone knows where i can get the free pdf of IEC 229?.. PLS . i need some help. thanks!

I have a 1l solution of Murashige and Skoog micro- and macro-nutrients. It also contains the vitamins and some hormones. The complete list is copied below. I emphasized the compounds that I think are the most unstable ones. Are the compounds listed autoclavable? I have anecdotal reports of only...

I remember my teacher saying that the medium that light travels through is the EM field , is this correct , if so then what is the medium that the electron , or neutrino or gluon travels through . Or what is the medium that a gravitational wave travels through .

In this following link: http://amasci.com/miscon/eleca.html#electron the author has mentioned that electrons are a wave medium through which energy can propagate. Is it true?

Use English to explain what this is showing. Also prove it!

Homework Statement A plane electromagnetic wave refracts in a nonuniform medium. The ray trajectory is known, y = a \left[ 1 - \left( \frac{x}{2a} \right)^2 \right] where a=const. a) Plot y(x) b) From the slope of the curve find the angle \theta \left( y \right) which the...

Homework Statement (1) A sound wave is traveling through air medium, if the medium is replaced by water, how that will affect the wavelength, frequency and speed of the wave ? (2) If the temperature of the air changed, how that will affect the wavelength, frequency and speed of the wave ...

I have a 3D graphics book, which gives the formula for absorption of radiance along a ray. I am trying to derive the details and would like to see if my derivation is correct. Let o(p) be the probability density that light is absorbed per unit length at point p. They give the formula as...

hey, I was just wondering if someone could give me an explanation about the following: 1. why, physically, does light travel at different speeds in different medium 2. why is the speed at which it travels through different media dependent of frequency, as is the case with dispersion...

Homework Statement What is the dB loss for a 3GHZ EM wave traveling through 2 meters of a medium with ϵ=1.5ϵ_0 and loss tangent = 9E-4? Homework Equations Umm...I'm actually not sure. I can't find anything really relating these things at all. The Attempt at a Solution My first...

Homework Statement A beam of light of frequency f is shot from point P in medium one ( refractive index = n ) to a point Q in medium two ( refractive index = N ) . Imagine a plane interface separates the two mediums. The perpendicular distance from P to the plane interface is a . The...

Hi, I was discussing a question with a Ph.D-student at my uni that neither him or the professor were able to answer. The situation is the following; Light enters a medium going from i.e. vacuum. We know that the energy of the photons in the vacuum is E = h\nu and we have the de broglie...

Here's the question: The transverse wave shown is traveling from left to right in a medium. The direction of the instantaneous velocity of the medium at point P is: A. no direction since v = 0 B. to the right C. upwards D. at an angle upwards and to the right E. downwards...

I recently learned about the Fizeau experiment, http://en.wikipedia.org/wiki/Fizeau_experiment"]http://en.wikipedia.org/wiki/Fizeau_experiment[/PLAIN] showing that light moves with a moving medium to an extent. However i was wondering what would happen with a magnetic field in a moving...

When a wave is passing medium containing discontinuities, I learned from Wiki, scattering means changing the direction from a straight trajectory, so does it include refraction, transmission and reflection? Does transmission means the part of wave that has passed the interface, and therefore...

Hi, As we know, "velocity = wavelength * frequency" and light will change its speed when it passes different types of medium. I wonder in velocity, wavelength and frequency, which one's change cause the others changing? Does its frequency change in different types of medium? or its wavelength...

I was looking at light sources Bending in Accelerating objects from this astronomy page http://www.astronomynotes.com/relativity/s3.htm" Then i began to wonder if this moving elevator was made of glass then the light would hit the glass and "move slower". Then if the glass was moving i was...

Since a string pulse get amplified when it enters a less dense medium such as from the thick heavy rope to a lighter string, why does not light do the same?

In the electromagnetism theory, the phase factor or constant (usually BETA) in wave propagation for lossy medium has the unit rad/m. I understood that it must be interpreted as the amount of phase shift that occurs as the wave travels one meter. However, differently of the attenuation...

A full bridge rectifier for 2A, 2000vdc is required. It is used for a capacitor charging circuit. A full bridge rectifier consists of 4 diodes in theory. But due to physical size limitations that i can install this item. Diodes that are above 3kV does not fit my sizes, so i have another...

Why electromagnatic waves do not require any medium for their propagation while other waves always require meduim for their propagation...?

Some one told me that ,by nature, flux an pass through any medium. Is it true? :rolleyes:

Homework Statement In the situations where a transverse or longitudinal wave is propagating through a medium, the medium moves. How do you determine the speed of the medium's motion? When is the medium's speed at a maximum? Homework Equations The speed of the propagating wave is v = frequency...

I was studying refraction and as I've heard and read, it occurs due to difference between speed of light in the rarer and denser medium. But isn't speed of light common for all observers? Please don't make fun of me if I've made a stupid mistake somewhere.

How to determine rarer & denser medium for light? As i read in one book, it's written that denser medium & rarer medium for doesn't depend upon density.For eg. steam has less density than dry air but the steam is denser medium & dry air is rarer medium for light.Before this i used to think in...

What is happening to a ray of light of a certain wavelength that passes through a transparent dielectric medium? Ex: Green light enters in a Bose–Einstein condensate, and slows down some. Than the light is coming out of the medium in free space. What will be the speed of the ray light and...

If we have a tank which full of water.Then,emitted the light into the tank.The speed of light is c/n . If we can run faster than c/n. We will run faster than light. Is it possible?

Why the speed of light decreases when it is in the medium? Thank you.

Greetings, I have been thinking as everything being particles and only appearing wavelike in double-slit experiments because they were in superposition. Now I am reading that they are really only waves. Waves in what medium? Thanks

A point charge inside infinite dielectric material 1. The problem statement, all variables and given known data A point charge is an infinite medium of dielectric material having a relative permittivity \epsilonr. <--- epsilon(sub r). Find the electric field vector and the potential function...