Refraction Definition and 726 Threads

This seems really easy but I am having a really hard time getting the correct answer to this question. Any help would be much appreciated. A ray in air is incident on a glass plate whose index of refraction is 1.60. The angle of refraction is one half the angle of reflection. The angle of...

i have a problem with understanding the phenomenon of reflection and refraction of light. when considering light as a electromagnetic wave i cannot imagine how it can be reflected or refracted when meeting a surface of different refractive index. it just sounds illogical to me that sth...

Okej have a piece of glass with refractive index n2 and tickness t. A ray of light falls on the glass with the angle theta1 (from a medium with recrative index n1). In the glass the ray has the angle theta2 and when it exits it has now got the displacement d (compared with the ray that...

Hi can u please explain me the difference between refraction and diffraction?

Given any index of refraction, how would I find a wavelength in that medium? Should I use frequency= c/wavelength? For example, if a piece of glass (medium) has a index of refraction 1.12, what's the wavelength?

Just to clear things up... does a greater index of refraction mean that the light bends more or less?

A parallel beam of light containing two wavelengths, 1 = 400 nm and 2 = 650 nm, enters the silicate flint glass of an equilateral prism with an angle of incidence of 49 degrees. At what angle, relative to the normal, does each beam leave the prism? This seems simple, but previously, I had...

Why would one need to use a complex index of refraction? Are there circumstances in which the ordinary index of refraction breaks down? What are they?

I am having a little bit of trouble finding the speed of light in a given medium when you are only supplied with the index of refraction. For example, I was given that n=1.36 in ethanol, and I had to find the speed of sound in ethanol. I know the equation for the index of refraction is n=c/v...

Suppose that you look at an aquarium with your eyes at the lever of the water surface. A duck swims on the surface of the water. When you look at the duck from the front, everything seems normal. However, when you look at the duck at an angle to the glass surface, the duck seems to be spilt in...

An observator is looking at a coin that is located on a swimming pool's floor with a depression Angle of 48 degrees. Knowing that the swimming pool's depth is 2.6 metres, calculate the depth that the observator can see. (Usually when you look at a swimming pool from with a smaller depression...

I'm asked to prove that the condition for the existence of an energy gap at the boudnry of the Brillouin zone on a 1D lattice is equivalent to the condition for Bragg refraction. I don't understand this question. Doesn't an energy gap arise solely when there is a potential? Meanwhile, Bragg...

imagine there is a spherical glass object with index of refraction N is that possible that for some N and angle of incidence A, the light will be total internal reflected forever. In other word, the light will travel within the object forever? i have been trying to proof it. but i don't know...

1) Find the maximum refracting angle which a crown glass prism (1.52 refractive index) may have if sodium light is to pass through it with two refractions and no reflection? What deviation will be caused? 2) A beam of light strikes a water surface (refractive index 1.33) abd some of it is...

Hi; I was wondering if someone could please help me with this question: "When you measure the law of reflection and the law of refraction, what is the advantage of making 2 measurements: one clockwise from the normal and one counterclockwise from the normal?" Could an advantage be that this is...

Hi guys. I'm doing this science fair project and I needed to know if there is a substance (any substance!) whose index of refraction can be changed/regulated by applying an electric current (or any other action) to it. I appreciate all help. Thanks!

Hi I have a good understanding of the refraction of light and the reason it occurs etc. but what is confusing me is the exact reason for the "slowing" and hence bending of light inside a transparent material. What are the exact properties that allow a transparent material to slow a beam...

Red light travels from air into liquid at an angle of incidence of 39 degrees and an angle of reflection of 17 degrees. Calculate the wavelength of the red light in the liquid if it's wavelength in the air is 750nm. If someone coule tell me how to go about this question that would be very...

this is my first post in this forum. i have a question : i have read that when light refracts into other medium its frequency remains unchanged but velocity and wavelength changes. there is a formula to it : v=n*lamda (v=velocity,n=freq,lambda=wavelength) Q1: why the freq remains...

An empty flask containing some chalk pieces is placed inside a beaker full of water. When look horizontally, the flask appears to be larger than it really is. why? and when looked verticlaly down, the content of the flask shrinks, or even disapperas. why?

I want to understand why pressure creates gravity under GR (not how, why). What kind of pressure are we talking about here? Is this just the potential energy of pressure acting as mass? And the second part: I've been trying to model gravity as refraction of masses moving with constant...

my brain is fried...and I need help again. How do I find the index of refraction again??

Critical angle... Is the formula: sin(critical angle) = 1/ mu, only true light is moving from one medium into air/ a vacuum? Thanks in advance. :smile:

another refraction question?? The left end of a long glass rod 6.00 cm in diameter has a convex hemispherical surface 3.00 cm in radius. The refractive index of the glass is 1.60. Determine the position of the image if an object is placed in air on the axis of the rod at the infinitely far...

hello again: A Spherical Fish Bowl. A small tropical fish is at the center of a water-filled spherical fish bowl 28.0 cm in diameter. Find the apparent position of the fish to an observer outside the bowl. The effect of the thin walls of the bowl may be ignored. i'm dealing with the...

an insect hovers in a fixed position above the still water of a pond. draw a diagram to show approximately where it appears to be to a fish vertically below it. Okay I am confused between two things ... is it going to appear at a lower height than original or will be at the same height since...

When using a wave tank to create waves that then pass through a gap in a barrier to create refraction that expands out the other side of the gap,, if the depth of the water is increased but the frequency is the same, will the amount of refraction increase or decrease? Basically, when depth in...

Hello! I'm having difficulty solving this problem, I was wondering if you can help me solve it. Light is incident in air at an angle on the upper surface of a transparent plate, the surfaces of the plate being plane and parallel to each other. A ray of light is incident at an angle of 66.0...

i know that refraction is the 'bending' of light as it enters a different medium. what's diffraction? is that when light somehow disperses when it goes really far...? can someone explain them? and why the names are so similar?

I have been doing a science fair project, *As some of you might have noticed by my previous posts* and I am TOTALLY stuck on this part of my lab. So this is basically what happened while I was trying to find out the angle of refraciton of 5 different liquids: After analysis of the...

given is a graph of n(lambda) vs lambda where n is the index of refraction N(1000) =1.45 Estimate Vphase and group velocity using the above info. i know that n = \frac{c}{v_{\phi}} = \frac{ck}{\omega} i can't simply susbtitute into that above relation because the lambda given is that...

I am doing a science fair project on refraction and I am preparing for the regionals and I found a small flaw in my report and I am wondering if any of you guys can help me out here. This is what I wrote: Why do electromagnetic waves warp when it goes through the process of refraction...

Hi! I'm trying to figure out what angel the light-wave will leave the glasprisma (it enters the glasprisma from the air). http://home.tiscali.se/21355861/bilder/prisma1.JPG So I need to use Snell's law n_{1}sin\theta_1 = n_{2}sin\theta_2 n for the glasprisma equals 1.6 So...

I have input rays into a glass plate and output rays for this glass plate also. How can I prove that they are indeed parallel. I'm thinking all I need to do is extend the inout and output rays, and indicate that they are both 180 deg. Visually, they will appear parallel anyways.

Prove mathematically that when a plane mirror is rotated an angle theta about an axis through its center, the angle of deflection of a light is equal to 2theta. How am i to show draw this out? I have already drawn my points and lined up my angles with and without the mirror rotated. I don't know...

Suppose you want to take a photograph of yourself as you look at your image in a flat mirror 1.8 m away. For what distance should the camera lens be focused? You must be ½ the total distance away: since the angle of incidence is equal to the angle of reflection, the distance needed to get a...

I'm a little confused. My source says the dielectric constant for water is 80. Then I have the equation that gives the index of refraction as n=\sqrt{\epsilon_r} (since it isn't very magnetic). But the index of refraction for water is 1.33. What am I missing?

One of our lab assignments was to use a lens to focus an arrow-shaped beam of light onto a sheet of paper. We were then told to predict what would happen if we covered up the top/bottom/left/right half of the lens. I predicted that covering the top portion would cause the bottom part of the...

A ray of light strikes a flat block of glass (n=1.5) of thickness 2.0 cm at an angle of 30 degrees with the normal. Find the distance the light is shifted. I found the angle of refraction to be 19.471 degrees. I figured I could find the horizontal distance traveled by rays going through at 30...

Could someone tell me if I did this right? A narrow beam of sodium yellow light, with wavelength 589 nm in vacuum, is incident from air onto a smooth water surface at an angle of incidence of 35.0 degrees. Determine the angle of refraction and the wavelength of the light in water. I did...

Is the following equation which relates to light refraction index and the amount which bounces back been proven experimental or theoretically(mathematicaly)? R = [(n1-n2)/(n1+n2)]

if you were to hit a fish with a laser gun, how would you aim? (provided that laser if faster than light). Pls explain.

if you were to hit a fish with a laser gun, how would you aim? (provided that laser if faster than light). Pls explain.

Calculate the speed of light in a) Diamond (n = 2.42) use 3.00 x 10^8 m/s as the speed of light ...ok how do I do this? Snell's law only let's me find anles or refractive indicies...

Ok so now our class is onto snell's law... We did a few experiments where light refracts when it is passing into a new medium... In an experiment today we were trying to find the total internal refraction, and my friend shined the light at an angle and we observed a spectrum... ? but it...

AP PHYSICS PROBLEM...i forgot the formula, someone help me solve! This won't take lon Light of frequency 6.0 x 1014 hz strikes a glass/air boundary at an angle of incidence, ø1. The ray is partially reflected and partially refracted at the boundary as shown. The indices are shown. (a)...

Does anybody here know the refraction index of paper? I couldn't find any info on this... Any kind will do.

The packet doesn't explain this concept very well, and the book doesn't seem to explain it at all. A glass surface (n = 1.5) is coated with a film with an index of refraction n=1.3. If light of frequency 6x10^14 cps is incident almost normally on the film, find the minimum thickness that...

Is the refraction of light a photon absorption-emission process? If so, why doesn't the beam scatter in all directions?

Why do shorter wave lengths of light (ie:blue light) refract more than longer wave lengths (ie:red light)? and why does light bend not just slow down? what is causing the light to follow and bend with the other light? what is this attraction force caused by? :confused: :confused: :confused: