All Questions
Tagged with refraction geometric-optics
245
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Ambiguity in proof of angle of minimum deviation of for a prism [closed]
I have stumbled upon a proof from one of my friends that for a prism, the angle of minimum deviation is that in which incident angle is equal to emergent angle. i.e.
$$\delta = i + e - A$$
where $A$ = ...
0
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0
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127
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Optics question: Simple way to transform a parallel bundle of collimated beamlets into a converging (diverging) bundle of collimated beamlets?
I'm searching for an optical element that converts a parallel bundle of individually collimated beamlets into a converging or diverging bundle of still collimated beamlets (or vice versa). So ...
- 181
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Could we appreciate Newton ring effects on a computer screen when pressing it?
This may sound like a pretty dumb question, but I've just found out about Newton rings and I wanted to know if the pattern of colourful circles observed in computer screens (especially old ones) when ...
- 117
2
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65
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Analysis of the reflection in metal
In order to solve the reflexion in a material with a complex index the solution I've found on textbooks is to define $\hat{n}\cos{\phi}:=a+bi$ where $\hat{n}=n_r+n_ii$ is the complex index and then ...
- 225
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Hyperbolic lens shape and aspheric surfaces
In Optics, Hecht, the author states that the perfect surface for a lens shape will be a hyperbola.
He essentially derives this answer by writing the optical path length from F1 to A, then A to D, and ...
- 59
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1
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128
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How to obtain the refractive index of a thin film via reflection?
I have analysed a thin-film sample on a reflective setup, using a setup similar to the one represented in the figure below. I also know the thickness of the sample d to be considerably smaller than ...
- 753
2
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1
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149
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How distant is the horizon on Venus?
Strong atmospheric refraction can make the horizon on Venus much closer than expected, but how close is it? My naive calculation is very different from reported observations.
A source cited in How ...
- 11.7k
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Is it true to say no refraction takes place when a ray comes along normal drawn to interface?
Many books and websites in our country say that there are two conditions for no refraction of light:
If index of Refraction of media on both sides is same.
If the ray of light falls normally on the ...
- 1,357
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260
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How to find the index of refraction of a glass cube with limited information?
This is a problem from my textbook that I've been struggling to solve:
A ray of light from a laser pointer is incident on the "upper" surface of a glass cube at the angle of 70°. The ray ...
- 13
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Thin layer of air between lenses in contact
consider the following case for thin lenses
Case 1: lens between two different medium
applying refraction through curved surfaces two times and subtracting -
$$\frac{\mu_{oil}}v - \frac{\mu_{air}}u = ...
- 379
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2
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452
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What exactly is "dense" in Optical Density?
My book states that:
When passing from one medium to another, if light slows down, the second medium is said to be optically denser than the first medium, and if light speeds up, then the second ...
- 1,168
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453
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Image Formation at a Spherical Refracting Surface
I was thinking about refraction at spherical refracting surfaces and what the required conditions be for the formation of a real or virtual image?
I thought I could use this formula:
\begin{equation*}
...
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3
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387
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How does a rainbow show all of its colours?
My question is tied closely to this one, asked a while back on the website. As far as my understanding goes, a rainbow is formed by sunlight undergoing two refractions and a reflection inside ...
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Finding Shift due to Refraction in Multiple Slabs when the object and viewer are in different medium [duplicate]
So, suppose we have three rectangular slabs each of varying refractive indices(R.I.) and thickness. We have a real point object to the left of the first slab and we have an observer to the right of ...
- 31
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2
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Can we tell on which side of a lens an image appears?
Suppose I look through a single, thin, converging lens at an object on the opposite side. Depending on where the object is placed, the lens will either produce a real image on the side of the lens ...
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