What is Refraction angle: Definition and 17 Discussions
In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. How much a wave is refracted is determined by the change in wave speed and the initial direction of wave propagation relative to the direction of change in speed.
For light, refraction follows Snell's law, which states that, for a given pair of media, the ratio of the sines of the angle of incidence θ1 and angle of refraction θ2 is equal to the ratio of phase velocities (v1 / v2) in the two media, or equivalently, to the indices of refraction (n2 / n1) of the two media.
Optical prisms and lenses use refraction to redirect light, as does the human eye. The refractive index of materials varies with the wavelength of light, and thus the angle of the refraction also varies correspondingly. This is called dispersion and causes prisms and rainbows to divide white light into its constituent spectral colors.
Hello, hopefully the question made sense, it was hard to translate. i attached a photo about the question.
I started with n1=1.4, sinΘ1=37◦ and n2=1.62
1.4(sin(37◦))=1.62sinΘ2
1.4(sin(37◦))/1.62=sinΘ2
arcsin(0.52)=31.34◦
Is it calculated correctly?
Building visibiity sensor...
What is best angle to detect water vapor reflection from laser, and refraction?
I plan to have two open cylindrical containers painted flat black and put inside each other so the overlap is about 0.5-1" (adj to limit ambient light vs airflow).
Laser is cheap red...
For finding refractive index of a glass block, we use n=real-depth / apparent-depth
For calculating apparent depth microscope is raised vertically until a clear focus is obtained of the underlying mark beneath the glass blob. Given that microscope is perpendicular to the mark, Wouldn't the...
“Sunlight due to refraction is greater in higher latitudes than at the equator because of shallower angles of incidence to horizon. It takes longer for Sun to go down half a degree at sunset at shallower angles.”
When I draw a diagram of sun rays incident towards the earth, the angle appears to...
Homework Statement
Homework Equations
Snell's Law
sin tetha1/v1 = sin tetha2/v2
n1 = c/v1
n1 . sin tetha 1 = n2 . sin tetha 2
The Attempt at a Solution
I try to make triangle out of line PO, so that it will have correlation to tetha, since o = center, then let's say there's point C at...
So i was wondering...if you have 2 surfaces of different areas..one bigger and one smaller...and the one with a smaller area disperses light through a lens..does more light travel through the one with the lens or the other or does the same amount of light travel through both?
To get further...
Hello!
In this previous post, most replies point out that it is not possible to predict the angle of refraction (and so the frequency) at a certain interface, given the wavelength of the original signal.
In particular,
But when dealing with optical waveguides, it seems to be different. I am...
Homework Statement
a fish at a depth d underwater.Takes the index of refraction of water as 4/3 show that when the fish is viewed at an angle of refraction θ , the apparent depth z of the fish is
z = (3d cosθ )/ √ (7 + 9 cos2 θ)
Homework Equations
snell's law
n1 x sin θ1 = n2 x sin θ2
The...
Statement:
I need a suitable method and factor to investigate ONE factor that affects the angle of refraction. It has to be related to the context of everyday life and glasses, i.e. how glasses are used to focus light and the light focused is that of a refracted ray. Therefore factors such as...
Homework Statement
I need to calculate refraction angle of light, if light ray is falling to the surface of aquarium water from the bottom in the angle of 60 degrees, n for water = 1,33
Homework Equations
sinφ2=(n1×sinφ1) /n2
The Attempt at a Solution
So i get sinφ2=1,33*0,866( meant as...
Hey there, recently been studying Optics in Feynman's book vol.1 and came across his geometrical approach of Fermat's least time theorem and its application on refraction. So he illustrates refraction geometrically like this (attached jpeg for those without the book)
and so he goes on to say...
Homework Statement
We have a parallel, transparent plate. The plate has an incidence of refraction that is dependent on a transverse coordinate. (i.e. the plate is perpendicular to z direction, and the refractive index changes along x direction)
n(x) = 1.5/(1 - x/0.13)
It is observed...
Homework Statement
A light ray is incident on a prism whose apex angle is 65.0°. The ray is
incident at θa and leaves the prism with θa = θd. The refractive index of
the prism glass is 1.54.
Calculate θ
ans:55.8°
Homework Equations
n1sin\phi1=n2sin\phi2
The Attempt at a...
For each of the following cases, will the light rays be bent toward or away from the normal?
a. ni > nr, where the angle of ni = 20
b. ni < nr, where the angle of ni = 20
c. from air to glass with an angle of incidence of 30
d. from glass to air with an angle of incidence of 30
for...
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...