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Is it possible to have total internal reflection of light incident from air to glass?
Wiki User
∙ 9y ago
If you mean that the light is in the glass, and the air is on the "outside", then yes. The other way it isn't possible; for total internal reflection, the material through which light travels must needs have a higher refractive index.
Wiki User
∙ 9y ago
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Where is Total internal reflection occurs when a beam of light Answer?
Total internal reflection occurs under two conditions; 1)the light must be traveling from more dense to less dense mediums 2)the light ray must hit the surface at an angle ,called the critical angle, or larger, as measured from a perpendicular (surface normal) line to the surfaces. The critical angle is typically in the 40 - 50 deg range, but specifically depends on the densities of the two media.
What is the advantage of using prisms in a periscope rather than plane mirrors?
A bathroom mirror has a reflective film (usually sputtered silver) applied to its rear surface. Unfortunately rear reflective surface mirrors produce slight double images since a small amount of light reflects off of the front surface of the glass in addition to the light reflected off of the silver on the rear glass surface. A front surface mirror has a reflective film (usually an extremely thin layer of vacuum deposited aluminum) applied to the front surface of the glass. The problem with the above types of mirrors is that salt water is corrosive to metals. Salt water exposure would quickly eat away at the silver or aluminum coatings which create the reflection in the above types of mirrors. So instead periscopes use right angle glass prisms since right angle glass prisms inherently produce an internal reflection, since no metal film is needed in order to create this internal reflection, and since the glass is very resistant to corrosion from salt water.
What is a glass slab?
it is a substance made of glass having 3 dimensions and is cuboid shaped. It does not deviate the light. This means that the incident and the emergent ray are parallel. The slab only produces lateral (sideways) shift or displacement.
Why are reflections upside down in a glass of water?
because the spoon is concave, making the reflection upside down
How does glass refract light?
Let us consider the beam of light incident on the boundary surface between two substances - glass with refractive index n=1.5 and air with refractive index n=1. One part of light will reflect from such a boundary surface and other part will pass through it being refracted. The total energy in the reflected and refracted rays is equal to the energy of the incident light, but the proportion of the intensities in these two rays will depend upon the refractive index difference, the angle of incidence, the light polarization and direction in which the light is passing the border (from glass to air or from air to glass). Animations below show four possible cases of the light beam transmission:Glass -> AirVideoAir -> GlassVideoParallelpolarizationPerpendicularpolarizationThe polarization is called parallel when the vector of electric field E lies in the plane of incident ray and normal to the border (see the figure below). In other case the polarization is called perpendicularAccording to Fresnel formula the angles q1of the incident wave, q2 of the reflected wave and q3 of the refracted wave are given by the equation:q1 = q2n1sinq1 = n2sinq3The intensity reflection coefficients R and R^ and transmission coefficients T and T^ (for the parallel and perpendicular polarization consequently) are described by the equations:For the ray incident normally to the border there is no difference between the parallel and perpendicular components. In this case we can write:The dependencies for the reflection coefficients R and for transmission coefficients T are given in the following figures:We can see from these figures and animations that for the light incident from the glass into the air there is an angle when the Total Internal Reflection (TIR) is observed. This means that any ray propagating in a glass at angles bigger than a critical angle (about 42� for glass-air interface) will be totally reflected and will not pass into the air. This effect is used for transmission of the light signals by the glass fiber over the large distance without a considerable attenuation.qTIR = arcsin(n2/n1), n1 > n2We can see also in the figure that for the light propagating from the air into the glass there is an angle at which the light with parallel polarization will not reflect, while the intensity of the perpendicularly polarized light is not zero. This angle is called Brewster's angle (56�40' for glass-air interface) and used for creation of the light polarizers and in lasers.qBR = arctg(n2/n1), n1 < n2
Is it possible to have internal reflection of light incident from air to glass?
If you mean that the light is in the glass, and the air is on the "outside", then yes. The other way it isn't possible; for total internal reflection, the material through which light travels must needs have a higher refractive index.
How will you demonstrate total internal reflection?
you can demonstrate total internal reflection using a light source and glass gratings.
Is there space between the layer in a laminated glass so that total internal reflection can Occur?
No.
When light passes from air to glass the light may change direction due to reflection?
yes .. at any interface when light passes from one medium to another part of it gets reflected and remaining refracted. so some amount of light incident when passing from air to glass gets reflected. but in the reverse way i.e, from glass to air there is chance for all the light incident to get reflected as in the case of total internal reflection. and again coming to your case the amount of light reflected follows the laws of reflection i.e, angle of incidence is equal to the angle of reflection. the light which got refracted follows the snell's laws of refraction.
What is the minimum index of refraction for a glass or plastic prism to be used in binoculars so that total internal reflection occurs at 45 degrees?
The minimum index of refraction for a glass or plastic prism to be used in binoculars so that total internal reflection occurs at 45 degrees is 1.414
Is BSC optometry from vinayaka mission univ approved by ugc?
write about total internal reflection and criticle angel of a glass slab
In fiber optic cables what reflects the light back into the core?
This is done by total internal reflection. It is the result of the fact that the inner glass and the outer glass have different indices of refraction (the outside glass has a lower index of refraction).
What are the types of reflection?
There's specular reflection, which is the reflection from a surface made of a non-absorbing, non-porous material. Conceptually, this is the type of reflection you get from mirrors and glass and other shiny things.Then there's diffuse reflection, which is the reflection from a surface made of a porous material. The incident light is able to penetrate the surface of a porous material where it then scatters around the material's structural lattice until it finally reflects back out at some random angle. Conceptually, this is the type of reflection that happens on everything but SUPER shiny surfaces. Even mirrors and glass undergo some diffuse reflection.Regular Reflection and Diffuse Reflection.
Can you poop out glass?
If you have eaten glass, yes, it is possible that you could excrete it in a bowel movement. This will most likely be painful and could cause internal injury.
What can produce a regular reflection?
A smooth pane of glass causes a regular reflection.
How is reflection of light from a plane mirror different from the refraction of light as it enters a piece of glass?
Light scattering by paper and reflection by a mirror are not all that different. Light scattering by a paper reflects light in many different directions because of its rough surface. Reflection by a flat mirror is reflection by a smooth surface at an angle 180 degrees from the incident angle.
What is the effect called when light does not pass through the glass block?
This question needs to be rewritten, it is not clear. Possible answer: reflection. Those that do enter the block, will be refracted, if the glass does not have the same index of refraction as the substance around it.
