Questions tagged [reflection]
This tag is for questions relating to reflection, the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. A familiar example of reflection comes from water waves; as the waves travel they reflect off objects that are floating in the water, and also reflect off the walls of the container holding the water.
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Reflection due to wave nature of light
In my high school, I am studying geometrical optics. I studied why smooth surfaces like mirrors form an image of an object but rough surfaces like a wall don't (due to regular reflection and irregular ...
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Electromagnetic reflection without velocity change
The Fresnel equations describe the reflection and transmission of electromagnetic waves between two media. The parameter in the equations is the impedance ratio, where the impedance is $Z=\mu/\epsilon$...
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Why are Fresnel coefficients not symmetric?
When talking about reflection, we have the following coefficients for the electric field:
$$r_{\perp}=\frac{n_1\cos(i)-n_2\cos(t)}{n_1\cos(i)+n_2\cos(t)} \\ r_{\parallel}=\frac{n_2\cos(i)-n_1\cos(t)}{...
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Question about amplitude of wave [closed]
Is it always true that:
$$\text{Incident Amplitude} = \text{Transmitted Amplitude} - \text{Reflected Amplitude}?$$
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How can a greater than 1 reflectance coefficient be explained in $\rm SiC$-$\rm SiO_2$ interface?
I ran a simulation using the Transfer Matrix Method to plot the R,T and A curves for a SiC->SiO2 interface. There's a region of incident energies where the |r|^2 I get is higher than 1 and the ...
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Are reflection and transmission coefficients in 1D problem are independent of the direction in which we choose as incident?
I was watching a lecture series of Quantum mechanics of Professor V. Balakrishnan,
There was a problem session,
“For an arbitrary potential barrier (any potential function of position and it need not ...
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Why does scanning a barcode off a mobile phone screen work?
I recently went to a store and showed the loyalty card on a picture taken on my phone. As the cashier moved to scan the barcode, I figured that this won't work.
Laser light is presumably coming out of ...
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Why total reflection happens at only 1 angle?
The critical angle can be intuitively understood by Snell's law.If the incident medium has a bigger diffraction index than the refracted medium then according to Snell's law the refracted ray will be ...
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What will be the color of red laser pointer spot on green surface?
I have read this discussion
enter link description here
, yet I want to make things more clear.
In ideal conditions is it true that red laser pointer spot will appear on white sutrface as red while on ...
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How do parallel reflected rays meet to form image at infinity? If they never meet then how is image formed?
In my textbooks it is written that when an object is kept at focus, its image is formed at infinity and is real. But how is this possible because parallel lines never meet and it is necessary for rays ...
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Does white balance in context of direct reflections and glare needs to be treated in another way than it is in diffuse reflections?
Given that I have a few images of a red apple, taken on a yellowish sunset.
Given that the goal is to see real apple color without the yellowish light from the evening sun
Given that in order to ...
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Property of total internal reflection question
If I create a medium with gradually decreasing refractive index from once face at index 2.0 and other at 1.01, and show a beam of light upon the optically denser side, will there be any losses upon ...
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What would your reflection look like if a mirror was going close to the speed of light?
What would your reflection look like if a mirror was going close to the speed of light?
Conditions: The mirror is a very long perfect mirror, lets say a light year long, moving close to the speed of ...
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Real image drawn in case of concave mirror is bit off
About
I am trying to draw real image of object in front of concave mirror. Case is when object is lying on the Center of curvature.
What I have done so far
There are two rays
A ray incident on the ...
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Deviation suffered by light ray incident on a surface
Problem:
Figure shows two spherical surfaces of radii $R$ and $2R$ separating three transparent media of refractive indices $\mu_1=1, \mu_2=2$ and $\mu_3=4$. A ray of light travelling in medium $\...
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